diff --git a/test/intl402/Temporal/Now/zonedDateTime/timezone-string-datetime.js b/test/intl402/Temporal/Now/zonedDateTime/timezone-string-datetime.js
index 731908d47f..5c69442a01 100644
--- a/test/intl402/Temporal/Now/zonedDateTime/timezone-string-datetime.js
+++ b/test/intl402/Temporal/Now/zonedDateTime/timezone-string-datetime.js
@@ -3,52 +3,24 @@
 
 /*---
 esid: sec-temporal.now.zoneddatetime
-description: Conversion of ISO date-time strings to Temporal.TimeZone instances
+description: Conversion of ISO date-time strings to Temporal.TimeZone instances (with Intl time zones)
 features: [Temporal]
 ---*/
 
-let timeZone = "2021-08-19T17:30";
-assert.throws(RangeError, () => Temporal.Now.zonedDateTime("iso8601", timeZone), "bare date-time string is not a time zone");
-assert.throws(RangeError, () => Temporal.Now.zonedDateTime("iso8601", { timeZone }), "bare date-time string is not a time zone");
-
-timeZone = "2021-08-19T17:30Z";
+let timeZone = "2021-08-19T17:30[America/Vancouver]";
 const result1 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result1.timeZone.id, "UTC", "date-time + Z is UTC time zone");
+assert.sameValue(result1.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone");
 const result2 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result2.timeZone.id, "UTC", "date-time + Z is UTC time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30-07:00";
-const result3 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result3.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
-const result4 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result4.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30-0700";
-const result5 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result5.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
-const result6 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result6.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30[America/Vancouver]";
-const result7 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result7.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone");
-const result8 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result8.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result2.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30Z[America/Vancouver]";
-const result9 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result9.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone");
-const result10 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result10.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
+const result3 = Temporal.Now.zonedDateTime("iso8601", timeZone);
+assert.sameValue(result3.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone");
+const result4 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
+assert.sameValue(result4.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00[America/Vancouver]";
-const result11 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result11.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone");
-const result12 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result12.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30-0700[America/Vancouver]";
-const result13 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result13.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone");
-const result14 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result14.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
+const result5 = Temporal.Now.zonedDateTime("iso8601", timeZone);
+assert.sameValue(result5.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone");
+const result6 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
+assert.sameValue(result6.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
diff --git a/test/intl402/Temporal/Now/zonedDateTimeISO/timezone-string-datetime.js b/test/intl402/Temporal/Now/zonedDateTimeISO/timezone-string-datetime.js
index a55f04d2e8..4de19823d9 100644
--- a/test/intl402/Temporal/Now/zonedDateTimeISO/timezone-string-datetime.js
+++ b/test/intl402/Temporal/Now/zonedDateTimeISO/timezone-string-datetime.js
@@ -3,52 +3,24 @@
 
 /*---
 esid: sec-temporal.now.zoneddatetimeiso
-description: Conversion of ISO date-time strings to Temporal.TimeZone instances
+description: Conversion of ISO date-time strings to Temporal.TimeZone instances (with Intl time zones)
 features: [Temporal]
 ---*/
 
-let timeZone = "2021-08-19T17:30";
-assert.throws(RangeError, () => Temporal.Now.zonedDateTimeISO(timeZone), "bare date-time string is not a time zone");
-assert.throws(RangeError, () => Temporal.Now.zonedDateTimeISO({ timeZone }), "bare date-time string is not a time zone");
-
-timeZone = "2021-08-19T17:30Z";
+let timeZone = "2021-08-19T17:30[America/Vancouver]";
 const result1 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result1.timeZone.id, "UTC", "date-time + Z is UTC time zone");
+assert.sameValue(result1.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone");
 const result2 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result2.timeZone.id, "UTC", "date-time + Z is UTC time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30-07:00";
-const result3 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result3.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
-const result4 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result4.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30-0700";
-const result5 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result5.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
-const result6 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result6.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30[America/Vancouver]";
-const result7 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result7.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone");
-const result8 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result8.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result2.timeZone.id, "America/Vancouver", "date-time + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30Z[America/Vancouver]";
-const result9 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result9.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone");
-const result10 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result10.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
+const result3 = Temporal.Now.zonedDateTimeISO(timeZone);
+assert.sameValue(result3.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone");
+const result4 = Temporal.Now.zonedDateTimeISO({ timeZone });
+assert.sameValue(result4.timeZone.id, "America/Vancouver", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00[America/Vancouver]";
-const result11 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result11.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone");
-const result12 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result12.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
-
-timeZone = "2021-08-19T17:30-0700[America/Vancouver]";
-const result13 = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result13.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone");
-const result14 = Temporal.Now.zonedDateTimeISO({ timeZone });
-assert.sameValue(result14.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
+const result5 = Temporal.Now.zonedDateTimeISO(timeZone);
+assert.sameValue(result5.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone");
+const result6 = Temporal.Now.zonedDateTimeISO({ timeZone });
+assert.sameValue(result6.timeZone.id, "America/Vancouver", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");