diff --git a/docs/timezone.md b/docs/timezone.md
index f0c02f0fa3..0ad41478a3 100644
--- a/docs/timezone.md
+++ b/docs/timezone.md
@@ -219,74 +219,6 @@ When overriding `id`, `toString()` and `toJSON()` should also be overridden.
## Methods
-### timeZone.**equals**(_other_: Temporal.TimeZone | object | string) : boolean
-
-**Parameters:**
-
-- `other` (`Temporal.TimeZone` object, object implementing the `Temporal.TimeZone` protocol, or a string time zone identifier): Another time zone to compare.
-
-**Returns:** `true` if `timeZone` and `other` are equivalent, or `false` if not.
-
-Compares two time zones for equivalence.
-Equality is determined by the following algorithm:
-
-- If `timeZone === other`, then the time zones are equivalent.
-- Otherwise, `timeZone.id` is compared to `other` (or `other.id` if `other` is an object).
- If any of the following conditions are true, then the time zones are equivalent:
- - Both string identifiers are Zone or Link names in the [IANA Time Zone Database](https://www.iana.org/time-zones), and they resolve to the same Zone name.
- This resolution is case-insensitive.
- - Both string identifiers are custom time zone identifiers that are equal according to `===`.
- This comparison is case-sensitive and does not normalize different Unicode characters.
- - Both identifiers are numeric offset time zone identifiers like "+05:30", and they represent the same offset.
-- Otherwise, the time zones are not equivalent.
-
-Note that "resolve to the same Zone name" noted above is behavior that can vary between ECMAScript and other consumers of the IANA Time Zone Database.
-ECMAScript implementations generally do not allow identifiers to be equivalent if they represent different ISO 3166-1 Alpha-2 country codes.
-However, non-ECMAScript platforms may merge Zone names across country boundaries.
-See [above](#variation-between-ecmascript-and-other-consumers-of-the-iana-time-zone-database) to learn more about this variation.
-
-Time zones that resolve to different Zones in the IANA Time Zone Database are not equivalent, even if those Zones always use the same offsets.
-Offset time zones and IANA time zones are also never equivalent.
-
-Example usage:
-
-
-```javascript
-kolkata = Temporal.TimeZone.from('Asia/Kolkata');
-kolkata.id; // => "Asia/Kolkata"
-calcutta = Temporal.TimeZone.from('Asia/Calcutta');
-calcutta.id; // => "Asia/Calcutta"
-kolkata.equals(calcutta); // => true
-kolkata.equals('Asia/Calcutta'); // => true
-kolkata.equals('Asia/Colombo'); // => false
-
-// IANA Time Zone Database identifiers are case insensitive
-kolkata.equals('asia/calcutta'); // => true
-
-// Offset time zones are never equivalent to named time zones
-kolkata.equals('+05:30'); // => false
-zeroOffset = Temporal.TimeZone.from('+00:00');
-zeroOffset.equals('UTC'); // false
-
-// For offset time zones, any valid format is accepted
-zeroOffset.equals('+00:00'); // => true
-zeroOffset.equals('+0000'); // => true
-zeroOffset.equals('+00'); // => true
-
-// Custom time zone identifiers are compared case-sensitively
-class Custom1 extends Temporal.TimeZone {
- constructor() { super('UTC'); }
- get id() { return 'Moon/Cheese'; }
-}
-class Custom2 extends Temporal.TimeZone {
- constructor() { super('UTC'); }
- get id() { return 'Moon/CHEESE'; }
-}
-new Custom1().equals(new Custom1()); // => true
-new Custom1().equals(new Custom2()); // => false
-```
-
-
### timeZone.**getOffsetNanosecondsFor**(_instant_: Temporal.Instant | string) : number
**Parameters:**
diff --git a/docs/zoneddatetime.md b/docs/zoneddatetime.md
index 2c3277b78b..1b3f184f70 100644
--- a/docs/zoneddatetime.md
+++ b/docs/zoneddatetime.md
@@ -1223,6 +1223,30 @@ To ignore both time zones and calendars, compare the instants of both:
zdt.toInstant().equals(other.toInstant());
```
+To compare time zone IDs directly, compare two ZonedDateTimes with the same instant and calendar:
+
+```javascript
+zdt.withTimeZone(id1).equals(zdt.withTimeZone(id2));
+```
+
+The time zones of _zonedDateTime_ and _other_ are considered equivalent by the following algorithm:
+
+- If the time zone objects are the same object, then the time zones are equivalent.
+- Otherwise, the IDs are compared.
+ If any of the following conditions are true, then the time zones are equivalent:
+ - Both string identifiers are Zone or Link names in the [IANA Time Zone Database](https://www.iana.org/time-zones), and they resolve to the same Zone name.
+ This resolution is case-insensitive.
+ - Both identifiers are numeric offset time zone identifiers like "+05:30", and they represent the same offset.
+- Otherwise, the time zones are not equivalent.
+
+Note that "resolve to the same Zone name" noted above is behavior that can vary between ECMAScript and other consumers of the IANA Time Zone Database.
+ECMAScript implementations generally do not allow identifiers to be equivalent if they represent different ISO 3166-1 Alpha-2 country codes.
+However, non-ECMAScript platforms may merge Zone names across country boundaries.
+See [above](#variation-between-ecmascript-and-other-consumers-of-the-iana-time-zone-database) to learn more about this variation.
+
+Time zones that resolve to different Zones in the IANA Time Zone Database are not equivalent, even if those Zones always use the same offsets.
+Offset time zones and IANA time zones are also never equivalent.
+
Example usage:
```javascript
@@ -1230,6 +1254,21 @@ zdt1 = Temporal.ZonedDateTime.from('1995-12-07T03:24:30.000003500+01:00[Europe/P
zdt2 = Temporal.ZonedDateTime.from('1995-12-07T03:24:30.000003500+01:00[Europe/Brussels]');
zdt1.equals(zdt2); // => false (same offset but different time zones)
zdt1.equals(zdt1); // => true
+
+// To compare time zone IDs, use withTimeZone() with each ID on the same
+// ZonedDateTime instance, and use equals() to compare
+kolkata = zdt1.withTimeZone('Asia/Kolkata');
+kolkata.equals(zdt.withTimeZone('Asia/Calcutta')); // => true
+
+// Offset time zones are never equivalent to named time zones
+kolkata.equals(zdt.withTimeZone('+05:30')); // => false
+zeroOffset = zdt1.withTimeZone('+00:00');
+zeroOffset.equals(zdt1.withTimeZone('UTC')); // => false
+
+// For offset time zones, any valid format is accepted
+zeroOffset.equals(zdt1.withTimeZone('+00:00')); // => true
+zeroOffset.equals(zdt1.withTimeZone('+0000')); // => true
+zeroOffset.equals(zdt1.withTimeZone('+00')); // => true
```
### zonedDateTime.**toString**(_options_?: object) : string
diff --git a/polyfill/index.d.ts b/polyfill/index.d.ts
index 99c3b77b35..6a4089a11b 100644
--- a/polyfill/index.d.ts
+++ b/polyfill/index.d.ts
@@ -1124,7 +1124,6 @@ export namespace Temporal {
static from(timeZone: TimeZoneLike): Temporal.TimeZone | TimeZoneProtocol;
constructor(timeZoneIdentifier: string);
readonly id: string;
- equals(timeZone: TimeZoneLike): boolean;
getOffsetNanosecondsFor(instant: Temporal.Instant | string): number;
getOffsetStringFor(instant: Temporal.Instant | string): string;
getPlainDateTimeFor(instant: Temporal.Instant | string, calendar?: CalendarLike): Temporal.PlainDateTime;
diff --git a/polyfill/lib/timezone.mjs b/polyfill/lib/timezone.mjs
index ca5b511716..9bfe832324 100644
--- a/polyfill/lib/timezone.mjs
+++ b/polyfill/lib/timezone.mjs
@@ -47,11 +47,6 @@ export class TimeZone {
if (!ES.IsTemporalTimeZone(this)) throw new TypeError('invalid receiver');
return GetSlot(this, TIMEZONE_ID);
}
- equals(other) {
- if (!ES.IsTemporalTimeZone(this)) throw new TypeError('invalid receiver');
- const timeZoneSlotValue = ES.ToTemporalTimeZoneSlotValue(other);
- return ES.TimeZoneEquals(this, timeZoneSlotValue);
- }
getOffsetNanosecondsFor(instant) {
if (!ES.IsTemporalTimeZone(this)) throw new TypeError('invalid receiver');
instant = ES.ToTemporalInstant(instant);
diff --git a/spec/timezone.html b/spec/timezone.html
index 96ddff163d..fa0ad251a9 100644
--- a/spec/timezone.html
+++ b/spec/timezone.html
@@ -106,19 +106,6 @@ get Temporal.TimeZone.prototype.id
-
- Temporal.TimeZone.prototype.equals ( _timeZoneLike_ )
-
- This method performs the following steps when called:
-
-
- 1. Let _timeZone_ be the *this* value.
- 1. Perform ? RequireInternalSlot(_timeZone_, [[InitializedTemporalTimeZone]]).
- 1. Let _other_ be ? ToTemporalTimeZoneSlotValue(_timeZoneLike_).
- 1. Return ? TimeZoneEquals(_timeZone_, _other_).
-
-
-
Temporal.TimeZone.prototype.getOffsetNanosecondsFor ( _instant_ )