diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/argument-primitive.js b/test/built-ins/Temporal/TimeZone/prototype/equals/argument-primitive.js
deleted file mode 100644
index 9e79b41bc1..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/argument-primitive.js
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.from
-description: Exceptions thrown if a value is passed that converts to an invalid string
-features: [Temporal]
----*/
-
-const primitives = [
-  undefined,
-  null,
-  true,
-  "string",
-  "local",
-  "Z",
-  "-00:00[UTC]",
-  "+00:01.1",
-  "-01.1",
-  "1994-11-05T08:15:30+25:00",
-  "1994-11-05T13:15:30-25:00",
-  7,
-  4.2,
-  12n
-];
-
-const tzUTC = new Temporal.TimeZone("UTC");
-for (const primitive of primitives) {
-  assert.throws(typeof primitive === "string" ? RangeError : TypeError, () => tzUTC.equals(primitive));
-}
-
-const symbol = Symbol();
-assert.throws(TypeError, () => tzUTC.equals(symbol));
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/branding.js b/test/built-ins/Temporal/TimeZone/prototype/equals/branding.js
deleted file mode 100644
index 7b5ad93e17..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/branding.js
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: Throw a TypeError if the receiver is invalid
-features: [Symbol, Temporal]
----*/
-
-const equals = Temporal.TimeZone.prototype.equals;
-
-assert.sameValue(typeof equals, "function");
-
-const args = ["UTC"];
-
-assert.throws(TypeError, () => equals.apply(undefined, args), "undefined");
-assert.throws(TypeError, () => equals.apply(null, args), "null");
-assert.throws(TypeError, () => equals.apply(true, args), "true");
-assert.throws(TypeError, () => equals.apply("", args), "empty string");
-assert.throws(TypeError, () => equals.apply(Symbol(), args), "symbol");
-assert.throws(TypeError, () => equals.apply(1, args), "1");
-assert.throws(TypeError, () => equals.apply({}, args), "plain object");
-assert.throws(TypeError, () => equals.apply(Temporal.TimeZone, args), "Temporal.TimeZone");
-assert.throws(TypeError, () => equals.apply(Temporal.TimeZone.prototype, args), "Temporal.TimeZone.prototype");
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/builtin.js b/test/built-ins/Temporal/TimeZone/prototype/equals/builtin.js
deleted file mode 100644
index 8eac773cd2..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/builtin.js
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: >
-    Tests that Temporal.TimeZone.prototype.equals
-    meets the requirements for built-in objects defined by the
-    introduction of chapter 17 of the ECMAScript Language Specification.
-info: |
-    Built-in functions that are not constructors do not have a "prototype" property unless
-    otherwise specified in the description of a particular function.
-
-    Unless specified otherwise, a built-in object that is callable as a function is a built-in
-    function object with the characteristics described in 10.3. Unless specified otherwise, the
-    [[Extensible]] internal slot of a built-in object initially has the value true.
-
-    Unless otherwise specified every built-in function and every built-in constructor has the
-    Function prototype object [...] as the value of its [[Prototype]] internal slot.
-features: [Temporal]
----*/
-
-assert.sameValue(Object.isExtensible(Temporal.TimeZone.prototype.equals),
-  true, "Built-in objects must be extensible.");
-
-assert.sameValue(Object.prototype.toString.call(Temporal.TimeZone.prototype.equals),
-  "[object Function]", "Object.prototype.toString");
-
-assert.sameValue(Object.getPrototypeOf(Temporal.TimeZone.prototype.equals),
-  Function.prototype, "prototype");
-
-assert.sameValue(Temporal.TimeZone.prototype.equals.hasOwnProperty("prototype"),
-  false, "prototype property");
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/id-wrong-type.js b/test/built-ins/Temporal/TimeZone/prototype/equals/id-wrong-type.js
deleted file mode 100644
index ec955693ae..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/id-wrong-type.js
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: TypeError thrown if time zone reports an id that is not a String
-features: [Temporal]
----*/
-
-class CustomTimeZone extends Temporal.TimeZone {
-  constructor(id) {
-    super("UTC");
-    this._id = id;
-  }
-  get id() {
-    return this._id;
-  }
-}
-
-[
-  undefined,
-  null,
-  true,
-  -1000,
-  Symbol(),
-  3600_000_000_000n,
-  {},
-  {
-    valueOf() {
-      return 3600_000_000_000;
-    }
-  }
-].forEach((wrongId) => {
-  const timeZoneWrong = new CustomTimeZone(wrongId);
-  const timeZoneOK = new Temporal.TimeZone('UTC');
-  assert.throws(TypeError, () => timeZoneWrong.equals(timeZoneOK));
-  assert.throws(TypeError, () => timeZoneOK.equals(timeZoneWrong));
-});
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/length.js b/test/built-ins/Temporal/TimeZone/prototype/equals/length.js
deleted file mode 100644
index 7d4d11fa6f..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/length.js
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: Temporal.TimeZone.prototype.equals.length is 1
-info: |
-    Every built-in function object, including constructors, has a "length" property whose value is
-    an integer. Unless otherwise specified, this value is equal to the largest number of named
-    arguments shown in the subclause headings for the function description. Optional parameters
-    (which are indicated with brackets: [ ]) or rest parameters (which are shown using the form
-    «...name») are not included in the default argument count.
-
-    Unless otherwise specified, the "length" property of a built-in function object has the
-    attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
-includes: [propertyHelper.js]
-features: [Temporal]
----*/
-
-verifyProperty(Temporal.TimeZone.prototype.equals, "length", {
-  value: 1,
-  writable: false,
-  enumerable: false,
-  configurable: true,
-});
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/name.js b/test/built-ins/Temporal/TimeZone/prototype/equals/name.js
deleted file mode 100644
index 21f452ad87..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/name.js
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: Temporal.TimeZone.prototype.equals.name is "equals".
-info: |
-    Every built-in function object, including constructors, that is not identified as an anonymous
-    function has a "name" property whose value is a String. Unless otherwise specified, this value
-    is the name that is given to the function in this specification.
-
-    Unless otherwise specified, the "name" property of a built-in function object, if it exists,
-    has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true }.
-includes: [propertyHelper.js]
-features: [Temporal]
----*/
-
-verifyProperty(Temporal.TimeZone.prototype.equals, "name", {
-  value: "equals",
-  writable: false,
-  enumerable: false,
-  configurable: true,
-});
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/not-a-constructor.js b/test/built-ins/Temporal/TimeZone/prototype/equals/not-a-constructor.js
deleted file mode 100644
index b5d9cae650..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/not-a-constructor.js
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: >
-  Temporal.TimeZone.prototype.equals does not implement [[Construct]], is not new-able
-info: |
-    Built-in function objects that are not identified as constructors do not implement the
-    [[Construct]] internal method unless otherwise specified in the description of a particular
-    function.
-includes: [isConstructor.js]
-features: [Reflect.construct, Temporal]
----*/
-
-assert.throws(TypeError, () => {
-  new Temporal.TimeZone.prototype.equals();
-}, "Calling as constructor");
-
-assert.sameValue(isConstructor(Temporal.TimeZone.prototype.equals), false,
-  "isConstructor(Temporal.TimeZone.prototype.equals)");
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/prop-desc.js b/test/built-ins/Temporal/TimeZone/prototype/equals/prop-desc.js
deleted file mode 100644
index 8d0dfe1e0a..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/prop-desc.js
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.prototype.equals
-description: The "equals" property of Temporal.TimeZone.prototype
-includes: [propertyHelper.js]
-features: [Temporal]
----*/
-
-assert.sameValue(
-  typeof Temporal.TimeZone.prototype.equals,
-  "function",
-  "`typeof TimeZone.prototype.equals` is `function`"
-);
-
-verifyProperty(Temporal.TimeZone.prototype, "equals", {
-  writable: true,
-  enumerable: false,
-  configurable: true,
-});
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-case-insensitive.js b/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-case-insensitive.js
deleted file mode 100644
index 75b5d613c7..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-case-insensitive.js
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.equals
-description: Time zone names are case insensitive
-features: [Temporal]
----*/
-
-const timeZone = 'UtC';
-const result = Temporal.TimeZone.from(timeZone);
-assert.sameValue(result.equals(timeZone), true);
-assert.sameValue(result.equals("+00:00"), false);
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-string-datetime.js b/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-string-datetime.js
deleted file mode 100644
index ebbe31b3b7..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-string-datetime.js
+++ /dev/null
@@ -1,61 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.equals
-description: Conversion of ISO date-time strings to the argument of Temporal.TimeZone.prototype.equals
-features: [Temporal]
----*/
-
-let tzUTC = Temporal.TimeZone.from("UTC");
-let arg = "2021-08-19T17:30";
-assert.throws(RangeError, () => tzUTC.equals(arg), "bare date-time string is not a time zone");
-
-[
-  "2021-08-19T17:30-07:00:01",
-  "2021-08-19T17:30-07:00:00",
-  "2021-08-19T17:30-07:00:00.1",
-  "2021-08-19T17:30-07:00:00.0",
-  "2021-08-19T17:30-07:00:00.01",
-  "2021-08-19T17:30-07:00:00.00",
-  "2021-08-19T17:30-07:00:00.001",
-  "2021-08-19T17:30-07:00:00.000",
-  "2021-08-19T17:30-07:00:00.0001",
-  "2021-08-19T17:30-07:00:00.0000",
-  "2021-08-19T17:30-07:00:00.00001",
-  "2021-08-19T17:30-07:00:00.00000",
-  "2021-08-19T17:30-07:00:00.000001",
-  "2021-08-19T17:30-07:00:00.000000",
-  "2021-08-19T17:30-07:00:00.0000001",
-  "2021-08-19T17:30-07:00:00.0000000",
-  "2021-08-19T17:30-07:00:00.00000001",
-  "2021-08-19T17:30-07:00:00.00000000",
-  "2021-08-19T17:30-07:00:00.000000001",
-  "2021-08-19T17:30-07:00:00.000000000",
-].forEach((timeZone) => {
-  assert.throws(
-    RangeError,
-    () => tzUTC.equals(timeZone),
-    `ISO string ${timeZone} with a sub-minute offset is not a valid time zone`
-  );
-});
-
-arg = "2021-08-19T17:30Z";
-tzUTC = Temporal.TimeZone.from(arg);
-assert.sameValue(tzUTC.equals(arg), true, "date-time + Z is UTC time zone");
-
-arg = "2021-08-19T17:30-07:00";
-tzUTC = Temporal.TimeZone.from(arg);
-assert.sameValue(tzUTC.equals(arg), true, "date-time + offset is the offset time zone");
-
-arg = "2021-08-19T17:30[UTC]";
-tzUTC = Temporal.TimeZone.from(arg);
-assert.sameValue(tzUTC.equals(arg), true, "date-time + IANA annotation is the IANA time zone");
-
-arg = "2021-08-19T17:30Z[UTC]";
-tzUTC = Temporal.TimeZone.from(arg);
-assert.sameValue(tzUTC.equals(arg), true, "date-time + Z + IANA annotation is the IANA time zone");
-
-arg = "2021-08-19T17:30-07:00[UTC]";
-tzUTC = Temporal.TimeZone.from(arg);
-assert.sameValue(tzUTC.equals(arg), true, "date-time + offset + IANA annotation is the IANA time zone");
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-string-multiple-offsets.js b/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-string-multiple-offsets.js
deleted file mode 100644
index 01dec3fd1f..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-string-multiple-offsets.js
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.from
-description: Time zone strings with UTC offset fractional part are not confused with time fractional part
-features: [Temporal]
----*/
-
-const timeZone = "2021-08-19T17:30:45.123456789-12:12[+01:46]";
-
-const result = Temporal.TimeZone.from(timeZone);
-assert.sameValue(result.equals("+01:46"), true, "Time zone string determined from bracket name");
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-wrong-type.js b/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-wrong-type.js
deleted file mode 100644
index 745e0a1d11..0000000000
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/timezone-wrong-type.js
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.from
-description: >
-  Appropriate error thrown when argument cannot be converted to a valid string
-  or object for TimeZone
-features: [BigInt, Symbol, Temporal]
----*/
-
-const rangeErrorTests = [
-  [null, "null"],
-  [true, "boolean"],
-  ["", "empty string"],
-  [1, "number that doesn't convert to a valid ISO string"],
-  [19761118, "number that would convert to a valid ISO string in other contexts"],
-  [1n, "bigint"]
-];
-
-const tzUTC = new Temporal.TimeZone("UTC");
-
-for (const [timeZone, description] of rangeErrorTests) {
-  assert.throws(
-    typeof timeZone === "string" ? RangeError : TypeError,
-    () => tzUTC.equals(timeZone),
-    `${description} does not convert to a valid ISO string`
-  );
-}
-
-const typeErrorTests = [
-  [Symbol(), "symbol"],
-  [{}, "object not implementing time zone protocol"],
-  [new Temporal.Calendar("iso8601"), "calendar instance"]
-];
-
-for (const [timeZone, description] of typeErrorTests) {
-  assert.throws(
-    TypeError,
-    () => tzUTC.equals(timeZone),
-    `${description} is not a valid object and does not convert to a string`
-  );
-}
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/argument-object.js b/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-object.js
similarity index 77%
rename from test/built-ins/Temporal/TimeZone/prototype/equals/argument-object.js
rename to test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-object.js
index 13f1bd80d6..0342912721 100644
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/argument-object.js
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-object.js
@@ -2,11 +2,13 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-esid: sec-temporal.timezone.prototype.equals
+esid: sec-temporal.zoneddatetime.prototype.equals
 description: Tests that objects can be compared for equality
 features: [Temporal]
 ---*/
 
+const instance = new Temporal.ZonedDateTime(0n, "UTC");
+
 class CustomTimeZone extends Temporal.TimeZone {
   constructor(id) {
     super("UTC");
@@ -27,7 +29,7 @@ const objectsEqualUTC = [
 const tzUTC = new Temporal.TimeZone("UTC");
 
 for (const object of objectsEqualUTC) {
-  const result = tzUTC.equals(object);
+  const result = instance.withTimeZone(tzUTC).equals(instance.withTimeZone(object));
   assert.sameValue(result, true, `Receiver ${tzUTC.id} should equal argument ${object.id}`);
 }
 
@@ -60,7 +62,7 @@ const tz0000ToTest = [
 
 for (const arg of objectsEqual0000) {
   for (const receiver of tz0000ToTest) {
-    const result = receiver.equals(arg);
+    const result = instance.withTimeZone(receiver).equals(instance.withTimeZone(arg));
     assert.sameValue(result, true, `Receiver ${receiver.id} should equal argument ${arg.id ?? arg}`);
   }
 }
@@ -80,7 +82,7 @@ const customObjectsToTest = [tzUTC, new CustomTimeZone("YouTeeSee"), new CustomT
 for (const arg of objectsNotEqual) {
   for (const receiver of customObjectsToTest) {
     if (arg === "UTC" && receiver === tzUTC) continue;
-    const result = receiver.equals(arg);
+    const result = instance.withTimeZone(receiver).equals(instance.withTimeZone(arg));
     assert.sameValue(result, false, `Receiver ${receiver.id} should not equal argument ${arg.id ?? arg}`);
   }
 }
@@ -97,7 +99,7 @@ const plainObjectDifferentCaseCustomId = {
   getOffsetNanosecondsFor: null
 };
 
-assert.sameValue(classInstanceCustomId.equals(classInstanceSameCaseCustomId), true);
-assert.sameValue(classInstanceCustomId.equals(classInstanceDifferentCaseCustomId), false);
-assert.sameValue(classInstanceCustomId.equals(plainObjectSameCaseCustomId), true);
-assert.sameValue(classInstanceCustomId.equals(plainObjectDifferentCaseCustomId), false);
+assert.sameValue(instance.withTimeZone(classInstanceCustomId).equals(instance.withTimeZone(classInstanceSameCaseCustomId)), true);
+assert.sameValue(instance.withTimeZone(classInstanceCustomId).equals(instance.withTimeZone(classInstanceDifferentCaseCustomId)), false);
+assert.sameValue(instance.withTimeZone(classInstanceCustomId).equals(instance.withTimeZone(plainObjectSameCaseCustomId)), true);
+assert.sameValue(instance.withTimeZone(classInstanceCustomId).equals(instance.withTimeZone(plainObjectDifferentCaseCustomId)), false);
diff --git a/test/built-ins/Temporal/TimeZone/prototype/equals/argument-valid.js b/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-valid.js
similarity index 51%
rename from test/built-ins/Temporal/TimeZone/prototype/equals/argument-valid.js
rename to test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-valid.js
index 5b9c79a00b..34522d954f 100644
--- a/test/built-ins/Temporal/TimeZone/prototype/equals/argument-valid.js
+++ b/test/built-ins/Temporal/ZonedDateTime/prototype/equals/argument-valid.js
@@ -2,11 +2,13 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-esid: sec-temporal.timezone.from
+esid: sec-temporal.zoneddatetime.prototype.equals
 description: Built-in time zones are compared correctly out of valid strings
 features: [Temporal]
 ---*/
 
+const instance = new Temporal.ZonedDateTime(0n, "UTC");
+
 const validsEqual = [
   ["+0330", "+03:30"],
   ["-0650", "-06:50"],
@@ -16,10 +18,8 @@ const validsEqual = [
 ];
 
 for (const [valid, canonical] of validsEqual) {
-  const tzValid = Temporal.TimeZone.from(valid);
-  const tzCanonical = Temporal.TimeZone.from(canonical);
-  assert.sameValue(tzValid.equals(canonical), true);
-  assert.sameValue(tzCanonical.equals(valid), true);
+  assert(instance.withTimeZone(valid).equals(instance.withTimeZone(canonical)), `${valid} time zone equals ${canonical}`);
+  assert(instance.withTimeZone(canonical).equals(instance.withTimeZone(valid)), `${canonical} time zone equals ${valid}`);
 }
 
 const validsNotEqual = [
@@ -30,8 +30,6 @@ const validsNotEqual = [
 ];
 
 for (const [valid, canonical] of validsNotEqual) {
-  const tzValid = Temporal.TimeZone.from(valid);
-  const tzCanonical = Temporal.TimeZone.from(canonical);
-  assert.sameValue(tzValid.equals(canonical), false);
-  assert.sameValue(tzCanonical.equals(valid), false);
+  assert(!instance.withTimeZone(valid).equals(instance.withTimeZone(canonical)), `${valid} time zone does not equal ${canonical}`);
+  assert(!instance.withTimeZone(canonical).equals(instance.withTimeZone(valid)), `${canonical} time zone does not equal ${valid}`);
 }
diff --git a/test/intl402/Temporal/TimeZone/prototype/equals/canonical-iana-names.js b/test/intl402/Temporal/TimeZone/prototype/equals/canonical-iana-names.js
deleted file mode 100644
index f686fa21b9..0000000000
--- a/test/intl402/Temporal/TimeZone/prototype/equals/canonical-iana-names.js
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone.from
-description: Canonicalizes to evaluate time zone equality
-features: [Temporal]
----*/
-
-const neverEqual = new Temporal.TimeZone('Asia/Tokyo');
-const zdt = new Temporal.ZonedDateTime(0n, 'America/Los_Angeles');
-const ids = [
-  ['America/Atka', 'America/Adak'],
-  ['America/Knox_IN', 'America/Indiana/Knox'],
-  ['Asia/Ashkhabad', 'Asia/Ashgabat'],
-  ['Asia/Dacca', 'Asia/Dhaka'],
-  ['Asia/Istanbul', 'Europe/Istanbul'],
-  ['Asia/Macao', 'Asia/Macau'],
-  ['Asia/Thimbu', 'Asia/Thimphu'],
-  ['Asia/Ujung_Pandang', 'Asia/Makassar'],
-  ['Asia/Ulan_Bator', 'Asia/Ulaanbaatar']
-];
-
-for (const [identifier, primaryIdentifier] of ids) {
-  const tz1 = new Temporal.TimeZone(identifier);
-  const tz2 = new Temporal.TimeZone(primaryIdentifier);
-
-  // compare objects
-  assert.sameValue(tz1.equals(tz2), true);
-  assert.sameValue(tz2.equals(tz1), true);
-  assert.sameValue(tz1.equals(neverEqual), false);
-
-  // compare string IDs
-  assert.sameValue(tz1.equals(tz2.id), true);
-  assert.sameValue(tz2.equals(tz1.id), true);
-  assert.sameValue(tz1.equals(neverEqual.id), false);
-
-  // compare ZonedDateTime instances
-  assert.sameValue(tz1.equals(zdt.withTimeZone(tz2)), true);
-  assert.sameValue(tz2.equals(zdt.withTimeZone(tz1)), true);
-  assert.sameValue(tz1.equals(zdt.withTimeZone(neverEqual)), false);
-
-  // compare IXDTF strings
-  assert.sameValue(tz1.equals(zdt.withTimeZone(tz2).toString()), true);
-  assert.sameValue(tz2.equals(zdt.withTimeZone(tz1).toString()), true);
-  assert.sameValue(tz1.equals(zdt.withTimeZone(neverEqual).toString()), false);
-}
diff --git a/test/intl402/Temporal/TimeZone/prototype/equals/offset-and-iana.js b/test/intl402/Temporal/TimeZone/prototype/equals/offset-and-iana.js
deleted file mode 100644
index 85cc2be599..0000000000
--- a/test/intl402/Temporal/TimeZone/prototype/equals/offset-and-iana.js
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright (C) 2023 Justin Grant. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-esid: sec-temporal.timezone
-description: Offset string time zones compare as expected
-features: [Temporal]
----*/
-
-const zdt = new Temporal.ZonedDateTime(0n, "America/Los_Angeles");
-const otz1 = new Temporal.TimeZone("+05:30");
-const otz2 = new Temporal.TimeZone("+0530");
-const tz = new Temporal.TimeZone("Asia/Kolkata");
-assert.sameValue(otz1.equals(otz2), true);
-assert.sameValue(otz2.equals(otz1), true);
-assert.sameValue(otz1.equals("+05:30"), true);
-assert.sameValue(otz1.equals(zdt.withTimeZone(otz2)), true);
-assert.sameValue(otz1.equals(zdt.withTimeZone(otz2).toString()), true);
-assert.sameValue(otz1.equals(tz), false);
-assert.sameValue(otz1.equals("Asia/Kolkata"), false);
-assert.sameValue(otz1.equals(zdt.withTimeZone(tz)), false);
-assert.sameValue(otz1.equals(zdt.withTimeZone(tz).toString()), false);
diff --git a/test/intl402/Temporal/TimeZone/prototype/equals/argument-object.js b/test/intl402/Temporal/ZonedDateTime/prototype/equals/argument-object.js
similarity index 54%
rename from test/intl402/Temporal/TimeZone/prototype/equals/argument-object.js
rename to test/intl402/Temporal/ZonedDateTime/prototype/equals/argument-object.js
index f73b55e807..daac5530cd 100644
--- a/test/intl402/Temporal/TimeZone/prototype/equals/argument-object.js
+++ b/test/intl402/Temporal/ZonedDateTime/prototype/equals/argument-object.js
@@ -2,11 +2,13 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-esid: sec-temporal.timezone.from
+esid: sec-temporal.zoneddatetime.prototype.equals
 description: Objects with IANA IDs are compared case-insensitively with their canonical IDs
 features: [Temporal]
 ---*/
 
+const instance = new Temporal.ZonedDateTime(0n, "UTC");
+
 class CustomTimeZone extends Temporal.TimeZone {
   constructor(id) {
     super("UTC");
@@ -35,10 +37,16 @@ const plainObjectsIANA = [
 
 for (const object1 of classInstancesIANA) {
   for (const object2 of classInstancesIANA) {
-    assert.sameValue(object1.equals(object2), true, `Receiver ${object1.id} should not equal argument ${object2.id}`);
+    assert(
+      instance.withTimeZone(object1).equals(instance.withTimeZone(object2)),
+      `Receiver ${object1.id} should not equal argument ${object2.id}`
+    );
   }
   for (const object2 of plainObjectsIANA) {
-    assert.sameValue(object1.equals(object2), true, `Receiver ${object2.id} should not equal argument ${object1.id}`);
+    assert(
+      instance.withTimeZone(object1).equals(instance.withTimeZone(object2)),
+      `Receiver ${object2.id} should not equal argument ${object1.id}`
+    );
   }
 }
 
@@ -51,14 +59,22 @@ const classInstancesIANADifferentCanonical = [
 
 for (const object1 of classInstancesIANADifferentCanonical) {
   for (const object2 of classInstancesIANA) {
-    assert.sameValue(object1.equals(object2), false, `Receiver ${object1.id} should not equal argument ${object2.id}`);
-    assert.sameValue(object2.equals(object1), false, `Receiver ${object2.id} should not equal argument ${object1.id}`);
+    assert(
+      !instance.withTimeZone(object1).equals(instance.withTimeZone(object2)),
+      `Receiver ${object1.id} should not equal argument ${object2.id}`
+    );
+    assert(
+      !instance.withTimeZone(object2).equals(instance.withTimeZone(object1)),
+      `Receiver ${object2.id} should not equal argument ${object1.id}`
+    );
   }
   for (const object2 of plainObjectsIANA) {
-    assert.sameValue(object1.equals(object2), false, `Receiver ${object1.id} should not equal argument ${object2.id}`);
-    assert.sameValue(
-      object1.equals(object2.id),
-      false,
+    assert(
+      !instance.withTimeZone(object1).equals(instance.withTimeZone(object2)),
+      `Receiver ${object1.id} should not equal argument ${object2.id}`
+    );
+    assert(
+      !instance.withTimeZone(object1).equals(instance.withTimeZone(object2.id)),
       `Receiver ${object1.id} should not equal argument ${object2.id}`
     );
   }
@@ -67,14 +83,22 @@ for (const object1 of classInstancesIANADifferentCanonical) {
 const classInstancesCustomNotIANA = [new CustomTimeZone("Moon/Cheese")];
 for (const object1 of classInstancesCustomNotIANA) {
   for (const object2 of classInstancesIANA) {
-    assert.sameValue(object1.equals(object2), false, `Receiver ${object1.id} should not equal argument ${object2.id}`);
-    assert.sameValue(object2.equals(object1), false, `Receiver ${object2.id} should not equal argument ${object1.id}`);
+    assert(
+      !instance.withTimeZone(object1).equals(instance.withTimeZone(object2)),
+      `Receiver ${object1.id} should not equal argument ${object2.id}`
+    );
+    assert(
+      !instance.withTimeZone(object2).equals(instance.withTimeZone(object1)),
+      `Receiver ${object2.id} should not equal argument ${object1.id}`
+    );
   }
   for (const object2 of plainObjectsIANA) {
-    assert.sameValue(object1.equals(object2), false, `Receiver ${object1.id} should not equal argument ${object2.id}`);
-    assert.sameValue(
-      object1.equals(object2.id),
-      false,
+    assert(
+      !instance.withTimeZone(object1).equals(instance.withTimeZone(object2)),
+      `Receiver ${object1.id} should not equal argument ${object2.id}`
+    );
+    assert(
+      !instance.withTimeZone(object1).equals(instance.withTimeZone(object2.id)),
       `Receiver ${object1.id} should not equal argument ${object2.id}`
     );
   }
diff --git a/test/intl402/Temporal/TimeZone/prototype/equals/argument-valid.js b/test/intl402/Temporal/ZonedDateTime/prototype/equals/argument-valid.js
similarity index 69%
rename from test/intl402/Temporal/TimeZone/prototype/equals/argument-valid.js
rename to test/intl402/Temporal/ZonedDateTime/prototype/equals/argument-valid.js
index 734ccf4401..34cca79fac 100644
--- a/test/intl402/Temporal/TimeZone/prototype/equals/argument-valid.js
+++ b/test/intl402/Temporal/ZonedDateTime/prototype/equals/argument-valid.js
@@ -2,11 +2,13 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-esid: sec-temporal.timezone.from
+esid: sec-temporal.zoneddatetime.prototype.equals
 description: Built-in time zones are parsed correctly out of valid strings
 features: [Temporal]
 ---*/
 
+const instance = new Temporal.ZonedDateTime(0n, "UTC");
+
 const valids = [
   ["Africa/CAIRO", "Africa/Cairo"],
   ["Asia/Ulan_Bator", "Asia/Ulaanbaatar"],
@@ -19,8 +21,6 @@ const valids = [
 ];
 
 for (const [valid, canonical = valid] of valids) {
-  const tzValid = Temporal.TimeZone.from(canonical);
-  const tzCanonical = Temporal.TimeZone.from(canonical);
-  assert.sameValue(tzValid.equals(tzCanonical), true);
-  assert.sameValue(tzCanonical.equals(tzValid), true);
+  assert(instance.withTimeZone(valid).equals(instance.withTimeZone(canonical)), `${valid} equals ${canonical}`);
+  assert(instance.withTimeZone(canonical).equals(instance.withTimeZone(valid)), `${canonical} equals ${valid}`);
 }
diff --git a/test/intl402/Temporal/ZonedDateTime/prototype/equals/canonical-iana-names.js b/test/intl402/Temporal/ZonedDateTime/prototype/equals/canonical-iana-names.js
new file mode 100644
index 0000000000..fbd43af572
--- /dev/null
+++ b/test/intl402/Temporal/ZonedDateTime/prototype/equals/canonical-iana-names.js
@@ -0,0 +1,37 @@
+// Copyright (C) 2023 Justin Grant. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.zoneddatetime.prototype.equals
+description: Canonicalizes to evaluate time zone equality
+features: [Temporal]
+---*/
+
+const neverEqual = new Temporal.ZonedDateTime(0n, 'Asia/Tokyo');
+const zdt = new Temporal.ZonedDateTime(0n, 'America/Los_Angeles');
+const ids = [
+  ['America/Atka', 'America/Adak'],
+  ['America/Knox_IN', 'America/Indiana/Knox'],
+  ['Asia/Ashkhabad', 'Asia/Ashgabat'],
+  ['Asia/Dacca', 'Asia/Dhaka'],
+  ['Asia/Istanbul', 'Europe/Istanbul'],
+  ['Asia/Macao', 'Asia/Macau'],
+  ['Asia/Thimbu', 'Asia/Thimphu'],
+  ['Asia/Ujung_Pandang', 'Asia/Makassar'],
+  ['Asia/Ulan_Bator', 'Asia/Ulaanbaatar']
+];
+
+for (const [identifier, primaryIdentifier] of ids) {
+  const z1 = zdt.withTimeZone(identifier);
+  const z2 = zdt.withTimeZone(primaryIdentifier);
+
+  // compare objects
+  assert(z1.equals(z2), `${identifier} equals ${primaryIdentifier} object`);
+  assert(z2.equals(z1), `${primaryIdentifier} equals ${identifier} object`);
+  assert(!z1.equals(neverEqual), "not equal to unrelated time zone object");
+
+  // compare IXDTF strings
+  assert(z1.equals(z2.toString()), `${identifier} equals ${primaryIdentifier} IXDTF string`);
+  assert(z2.equals(z1.toString()), `${primaryIdentifier} equals ${identifier} IXDTF string`);
+  assert(!z1.equals(neverEqual.toString()), "not equal to unrelated IXDTF string");
+}
diff --git a/test/intl402/Temporal/TimeZone/prototype/equals/canonical-not-equal.js b/test/intl402/Temporal/ZonedDateTime/prototype/equals/canonical-not-equal.js
similarity index 70%
rename from test/intl402/Temporal/TimeZone/prototype/equals/canonical-not-equal.js
rename to test/intl402/Temporal/ZonedDateTime/prototype/equals/canonical-not-equal.js
index 024499167e..10e7776d37 100644
--- a/test/intl402/Temporal/TimeZone/prototype/equals/canonical-not-equal.js
+++ b/test/intl402/Temporal/ZonedDateTime/prototype/equals/canonical-not-equal.js
@@ -2,9 +2,9 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-esid: sec-temporal.timezone.from
+esid: sec-temporal.zoneddatetime.prototype.equals
 description: Canonical time zone identifiers are never equal to each other
-features: [Temporal]
+features: [Temporal, Intl-enumeration]
 ---*/
 
 // supportedValuesOf only returns canonical IDs
@@ -19,7 +19,7 @@ const forEachDistinctPair = (array, func) => {
 };
 
 forEachDistinctPair(ids, (id1, id2) => {
-  const tz = new Temporal.TimeZone(id1);
-  assert.sameValue(tz.equals(id2), false);
+  const instance = new Temporal.ZonedDateTime(0n, id1);
+  assert(!instance.equals(instance.withTimeZone(id2)), `${id1} does not equal ${id2}`);
 })
 
diff --git a/test/intl402/Temporal/ZonedDateTime/prototype/equals/offset-and-iana.js b/test/intl402/Temporal/ZonedDateTime/prototype/equals/offset-and-iana.js
new file mode 100644
index 0000000000..8e0d16ea18
--- /dev/null
+++ b/test/intl402/Temporal/ZonedDateTime/prototype/equals/offset-and-iana.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2023 Justin Grant. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.zoneddatetime.prototype.equals
+description: Offset string time zones compare as expected
+features: [Temporal]
+---*/
+
+const zdt = new Temporal.ZonedDateTime(0n, "America/Los_Angeles");
+const otz1 = new Temporal.TimeZone("+05:30");
+const otz2 = new Temporal.TimeZone("+0530");
+const tz = new Temporal.TimeZone("Asia/Kolkata");
+assert(zdt.withTimeZone(otz1).equals(zdt.withTimeZone(otz2)), "+05:30 = +0530");
+assert(zdt.withTimeZone(otz2).equals(zdt.withTimeZone(otz1)), "+0530 = +05:30");
+assert(zdt.withTimeZone(otz1).equals(zdt.withTimeZone("+05:30")), "+05:30 = +05:30 string ID");
+assert(zdt.withTimeZone(otz1).equals(zdt.withTimeZone(otz2).toString()), "+05:30 = +0530 IXDTF string");
+assert(!zdt.withTimeZone(otz1).equals(zdt.withTimeZone("Asia/Kolkata")), "+05:30 != Asia/Kolkata string ID");
+assert(!zdt.withTimeZone(otz1).equals(zdt.withTimeZone(tz)), "+05:30 != Asia/Kolkata");
+assert(!zdt.withTimeZone(otz1).equals(zdt.withTimeZone(tz).toString()), "+05:30 != Asia/Kolkata IXDTF string");
diff --git a/test/intl402/Temporal/TimeZone/prototype/equals/timezone-case-insensitive.js b/test/intl402/Temporal/ZonedDateTime/prototype/equals/timezone-case-insensitive.js
similarity index 97%
rename from test/intl402/Temporal/TimeZone/prototype/equals/timezone-case-insensitive.js
rename to test/intl402/Temporal/ZonedDateTime/prototype/equals/timezone-case-insensitive.js
index c9b6a19c4e..2016e3b994 100644
--- a/test/intl402/Temporal/TimeZone/prototype/equals/timezone-case-insensitive.js
+++ b/test/intl402/Temporal/ZonedDateTime/prototype/equals/timezone-case-insensitive.js
@@ -2,9 +2,9 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
-esid: sec-temporal.timezone.from
+esid: sec-temporal.zoneddatetime.prototype.equals
 description: Time zone names are compared case-insensitively
-features: [Temporal]
+features: [Temporal, Intl-enumeration]
 ---*/
 
 const timeZoneIdentifiers = [
@@ -618,7 +618,7 @@ const ids = [...new Set([...timeZoneIdentifiers, ...Intl.supportedValuesOf('time
 for (const id of ids) {
   const lower = id.toLowerCase();
   const upper = id.toUpperCase();
-  const tz = new Temporal.TimeZone(id);
-  assert.sameValue(tz.equals(upper), true, `Time zone "${id}" compared to string "${upper}"`);
-  assert.sameValue(tz.equals(lower), true, `Time zone "${id}" compared to string "${lower}"`);
+  const zdt = new Temporal.ZonedDateTime(0n, id);
+  assert(zdt.equals(zdt.withTimeZone(upper)), `Time zone "${id}" compared to string "${upper}"`);
+  assert(zdt.equals(zdt.withTimeZone(lower)), `Time zone "${id}" compared to string "${lower}"`);
 }