### `0.6.2` _2026-04-26_
* Updated data to IANA TZDB `2026b`. [#1145](https://github.com/moment/moment-timezone/pull/1145)

### `0.6.1` _2026-03-18_
* Updated data to IANA TZDB `2026a`. [#1140](https://github.com/moment/moment-timezone/pull/1140)

### `0.6.0` _2025-05-25_
* Fixed and updated TypeScript definitions. [#1132](https://github.com/moment/moment-timezone/pull/1132)
  * Updated types to more accurately match the code implementation.
  * Added definitions for pre-built files (e.g. `moment-timezone-with-data.js`).

This release is a **potential breaking change** for TypeScript projects only.
The types are now more accurate, but consumers might hit errors if they were relying on the more relaxed types.

No implementation code has changed in this release.

### `0.5.48` _2025-03-23_
* Updated data to IANA TZDB `2025b`. [#1130](https://github.com/moment/moment-timezone/pull/1130)

### `0.5.47` _2025-01-28_
* Updated data to IANA TZDB `2025a`. [#1125](https://github.com/moment/moment-timezone/pull/1125)

### `0.5.46` _2024-10-06_
* Updated data to IANA TZDB `2024b`. [#1121](https://github.com/moment/moment-timezone/pull/1121)
  This only affects historical timestamps; no future timestamps have changed.

### `0.5.45` _2024-02-04_
* Updated data to IANA TZDB `2024a`. [#1095](https://github.com/moment/moment-timezone/pull/1095)

### `0.5.44` _2023-12-29_
* Updated data to IANA TZDB `2023d`. [#1085](https://github.com/moment/moment-timezone/pull/1085)
* Fixed `.valueOf()` to return `NaN` for invalid zoned objects (matching default `moment`). [#1082](https://github.com/moment/moment-timezone/pull/1082)
* Performance improvements:
  * Use binary search when looking up zone information. [#720](https://github.com/moment/moment-timezone/pull/720)
  * Avoid redundant checks in `tz.guess()`.
  * Avoid redundant `getZone()` calls in `.tz()`.

### `0.5.43` _2023-03-31_
* Updated data to IANA TZDB `2023c`. [#1053](https://github.com/moment/moment-timezone/pull/1053)

### `0.5.42` _2023-03-24_
* Updated data to IANA TZDB `2023b`. [#1047](https://github.com/moment/moment-timezone/pull/1047)

### `0.5.41` _2023-02-25_
* Updated `moment` npm dependency to `2.29.4` to remove automated warnings about insecure dependencies.
  Moment Timezone still works with core Moment `2.9.0` and higher.
* Updated all dev dependencies including UglifyJS, which produces the minified builds.
* Added deprecation warning to the pre-built `moment-timezone-with-data-2012-2022` bundles. [#1035](https://github.com/moment/moment-timezone/issues/1035).
  Use the rolling `moment-timezone-with-data-10-year-range` files instead.

### `0.5.40` _2022-12-11_
* Updated data to IANA TZDB `2022g`. [#1022](https://github.com/moment/moment-timezone/pull/1022)

### `0.5.39` _2022-11-13_
* Updated data to IANA TZDB `2022f`. [#1014](https://github.com/moment/moment-timezone/pull/1014)

### `0.5.38` _2022-10-15_
* Updated data to IANA TZDB `2022e`. [#1009](https://github.com/moment/moment-timezone/pull/1009)
* Added `moment.tz.dataVersion` property to TypeScript definitions. [#930](https://github.com/moment/moment-timezone/issues/930)
* Removed temporary `.tar.gz` files from npm releases. [#1000](https://github.com/moment/moment-timezone/pull/1000)

### `0.5.37` _2022-08-25_
* Re-publish npm package, because of extra folder present in `0.5.36`. [#999](https://github.com/moment/moment-timezone/issues/999)

### `0.5.36` _2022-08-25_
* Updated data to IANA TZDB `2022c`.
* improvements/fixes to data pipeline.

### `0.5.35` _2022-08-23_
* Fix command injection in data pipeline. https://github.com/moment/moment-timezone/security/advisories/GHSA-56x4-j7p9-fcf9
* Fix cleartext transmission of sensitive information. https://github.com/moment/moment-timezone/security/advisories/GHSA-v78c-4p63-2j6c

Thanks to the OpenSSF Alpha-Omega project for reporting these!

### `0.5.34` _2021-11-10_
* Updated data to IANA TZDB `2021e`. [#962](https://github.com/moment/moment-timezone/pull/962)

### `0.5.33` _2021-02-06_
* Updated data to IANA TZDB `2021a`. [#927](https://github.com/moment/moment-timezone/pull/927)

### `0.5.32` _2020-11-14_
* Updated data to IANA TZDB `2020d`. [#910](https://github.com/moment/moment-timezone/pull/910)

### `0.5.31` _2020-05-16_
* Fixed Travis builds for Node.js 4 and 6.

### `0.5.30` _2020-05-16_
* Updated data to IANA TZDB `2020a`. [#852](https://github.com/moment/moment-timezone/pull/852)
* Fixed TypeScript definitions.

NOTE: You might need to un-install `@types/moment-timezone`. Check
[#858](https://github.com/moment/moment-timezone/issues/858) for more info.

### `0.5.29` _2020-05-16_
* Merged fix of es6 module loading issue https://github.com/moment/moment-timezone/commit/1fd42349189b24e15c60f162dc8c40b42db79dfe
* Merged PR with TypeScript declarations https://github.com/moment/moment-timezone/commit/ed529ea6fbcc70315c0c3f6d7c7cb70eadf56b03
* Merged fixes to changelog https://github.com/moment/moment-timezone/commit/adb7d7b43c7328d814311ac1355bfeef88eab6e8

### `0.5.28` _2020-02-21_
Merged pull request [#410](https://github.com/moment/moment-timezone/pull/410) from @adgrace:
* Added a method `moment.tz.zonesForCountry(country_code)` which returns all timezones for the country
* Added a method `moment.tz(timezone_id).countries()` to get countries for some time zone
* Added a method `moment.tz.countries()` to get all country codes
* And as you know `moment.tz.zones()` already exists

### `0.5.27` _2019-10-14_
* Updated data to IANA TZDB `2019c`.

### `0.5.26` _2019-06-06_
* Updated data to IANA TZDB `2019b`.
* Fix: stabilize Array.sort [#762](https://github.com/moment/moment-timezone/pull/762)

### `0.5.25` _2019-04-17_
* Fix `moment.tz.dataVersion` to return `2019a` [#742](https://github.com/moment/moment-timezone/issues/742)
* Update path in bower.json

### `0.5.24` _2019-04-17_
* Updated data to IANA TZDB `2019a` [#737](https://github.com/moment/moment-timezone/issues/737)
* Start shipping both a 1970-1930 file and a rolling 10-year file [#614](https://github.com/moment/moment-timezone/issues/614) [#697](https://github.com/moment/moment-timezone/issues/697)
* Fixed bug where `_z` time zone name was not cleared with `.local()` or `.utcOffset(offset)` [#738](https://github.com/moment/moment-timezone/issues/738)

### `0.5.23` _2018-10-28_
* Fix minor issue with tz guessing in Russia [#691](https://github.com/moment/moment-timezone/pull/691)

### `0.5.22` _2018-10-28_
* Updated data to IANA TZDB `2018g` [#689](https://github.com/moment/moment-timezone/pull/689)
* Fix issue with missing LMT entries for some zones, and fix data builds on Linux and Windows [#308](https://github.com/moment/moment-timezone/issues/308)

### `0.5.21` _2018-06-23_
* Bugfix: revert breaking change introduced in 0.5.18

### `0.5.20` _2018-06-18_
* Bugfix: accidentally commented code

### `0.5.19` _2018-06-18_
* Revert: moved moment to peerDependencies

### `0.5.18` _2018-06-18_
* Return error when timezone name is not a string.
* Moved moment to peerDependencies [#628](https://github.com/moment/moment-timezone/pull/628)
* Prefer nodejs to amd declaration [#573](https://github.com/moment/moment-timezone/pull/573)

### `0.5.17` _2018-05-12_
* Updated data to IANA TZDB `2018d`. [#616](https://github.com/moment/moment-timezone/pull/616)

### `0.5.16` _2018-04-18_
* Fixed Etc/UTC timezone recognition, updated tests. [#599](https://github.com/moment/moment-timezone/pull/599)
* Updated minified files to contain IANA TZDB `2018d` data

### `0.5.15` _2018-04-17_
* Updated data to IANA TZDB `2018d`. [#596](https://github.com/moment/moment-timezone/pull/596)

### `0.5.14` _2017-10-30_
* Ensure Intl response is valid when guessing time zone. [#553](https://github.com/moment/moment-timezone/pull/553)
* Updated data to IANA TZDB `2017c`. [#552](https://github.com/moment/moment-timezone/pull/552)
* Convert to tz keeping wall time [#505](https://github.com/moment/moment-timezone/pull/505)
* Make all time zones available for guessing. [#483](https://github.com/moment/moment-timezone/pull/483)
* zone.offset has been deprecated in favor of zone.utcOffset [#398](https://github.com/moment/moment-timezone/pull/398)
* Check for timestamp formats when parsing [#348](https://github.com/moment/moment-timezone/pull/348)

### `0.5.13` _2017-04-04_
* Bumped version to address Bower cache issues with last release.  [#474](https://github.com/moment/moment-timezone/issues/474)
* (No actual changes otherwise)

### `0.5.12` _2017-04-02_
* Updated data to IANA TZDB `2017b`. [#422](https://github.com/moment/moment-timezone/pull/460)
* Build the truncated data file as 2012-2022 (+/- 5 years).

### `0.5.11` _2016-12-23_
* Remove log statement when data is loaded twice. [#352](https://github.com/moment/moment-timezone/pull/352)

### `0.5.10` _2016-11-27_
* Updated data to IANA TZDB `2016j`. [#422](https://github.com/moment/moment-timezone/pull/422)

### `0.5.9` _2016-11-03_
* Fixed the output of `moment.tz.version`. [#413](https://github.com/moment/moment-timezone/issues/413)

### `0.5.8` _2016-11-03_
* Updated data to IANA TZDB `2016i`. [#411](https://github.com/moment/moment-timezone/pull/411)

### `0.5.7` _2016-10-21_
* Updated data to IANA TZDB `2016h`. [#403](https://github.com/moment/moment-timezone/pull/403)

### `0.5.6` _2016-10-08_
* Updated data to IANA TZDB `2016g`. [#394](https://github.com/moment/moment-timezone/pull/394)

### `0.5.5` _2016-07-24_
* Updated data to IANA TZDB `2016f`. [#360](https://github.com/moment/moment-timezone/pull/360)

### `0.5.4` _2016-05-03_
* Updated data to IANA TZDB `2016d`. [#336](https://github.com/moment/moment-timezone/pull/336)
* Ignore the results from `Intl.DateTimeFormat().resolvedOptions().timeZone` if it is undefined. [#322](https://github.com/moment/moment-timezone/pull/322)

### `0.5.3` _2016-03-24_
* Updated data to IANA TZDB `2016c`. [#321](https://github.com/moment/moment-timezone/pull/321)

### `0.5.2` _2016-03-15_
* Updated data to IANA TZDB `2016b`. [#315](https://github.com/moment/moment-timezone/pull/315)

### `0.5.1` _2016-03-01_
* Updated data to IANA TZDB `2016a`. [#299](https://github.com/moment/moment-timezone/pull/299)
* Fixed bug when `Date#toTimeString` did not return a known format. [#302](https://github.com/moment/moment-timezone/pull/302)  [#303](https://github.com/moment/moment-timezone/pull/303)
* Added lookup on `Intl.DateTimeFormat().resolvedOptions().timeZone` to `moment.tz.guess()`. [#304](https://github.com/moment/moment-timezone/pull/304) [#291](https://github.com/moment/moment-timezone/pull/291)

### `0.5.0` _2015-12-28_
* Added support for guessing the user's timezone via `moment.tz.guess()`. [#285](https://github.com/moment/moment-timezone/pull/285)
* Fixed UMD export issue when there was an html element with `id=exports`. [#275](https://github.com/moment/moment-timezone/pull/275)
* Removed jspm specific dependencies from `package.json`. [#284](https://github.com/moment/moment-timezone/pull/284)

### `0.4.1` _2015-10-07_
* Updated data to IANA TZDB `2015e`. [#253](https://github.com/moment/moment-timezone/pull/253)
* Updated data to IANA TZDB `2015f`. [#253](https://github.com/moment/moment-timezone/pull/253)
* Updated data to IANA TZDB `2015g`. [#255](https://github.com/moment/moment-timezone/pull/255)
* Added jspm dependencies for moment. [#234](https://github.com/moment/moment-timezone/pull/234)
* Included builds directory in npm. [#237](https://github.com/moment/moment-timezone/pull/237)
* Removed version field from bower.json. [#230](https://github.com/moment/moment-timezone/pull/230)

### `0.4.0` _2015-05-30_
* Updated data to IANA TZDB `2015b`. [#201](https://github.com/moment/moment-timezone/pull/201)
* Updated data to IANA TZDB `2015c`. [#214](https://github.com/moment/moment-timezone/pull/214)
* Updated data to IANA TZDB `2015d`. [#214](https://github.com/moment/moment-timezone/pull/214)
* Updated zone getter to allow lazy unpacking to improve initial page load times. [#216](https://github.com/moment/moment-timezone/pull/216)
* Added a `package.json` `jspm:main` entry point. [#194](https://github.com/moment/moment-timezone/pull/194)
* Added `composer.json`. [#222](https://github.com/moment/moment-timezone/pull/222)
* Added an error message when trying to load moment-timezone twice. [#212](https://github.com/moment/moment-timezone/pull/212)

### `0.3.1` _2015-03-16_
* Updated data to IANA TZDB `2015a`. [#183](https://github.com/moment/moment-timezone/pull/183)

### `0.3.0` _2015-01-13_

* *Breaking:* Added country data to the `meta/*.json` files. Restructured the data to support multiple countries per zone. [#162](https://github.com/moment/moment-timezone/pull/162)
* Added the ability to set a default timezone for all new moments. [#152](https://github.com/moment/moment-timezone/pull/152)
* Fixed a bug when passing a moment with an offset to `moment.tz`. [#169](https://github.com/moment/moment-timezone/pull/169)
* Fixed a deprecation in moment core, changing `moment#zone` to `moment#utcOffset`. [#168](https://github.com/moment/moment-timezone/pull/168)

### `0.2.5` _2014-11-12_
* Updated data to IANA TZDB `2014j`. [#151](https://github.com/moment/moment-timezone/pull/151)

### `0.2.4` _2014-10-20_
* Updated data to IANA TZDB `2014i`. [#142](https://github.com/moment/moment-timezone/pull/142)

### `0.2.3` _2014-10-20_
* Updated data to IANA TZDB `2014h`. [#141](https://github.com/moment/moment-timezone/pull/141)

### `0.2.2` _2014-09-04_
* Updated data to IANA TZDB `2014g`. [#126](https://github.com/moment/moment-timezone/pull/126)
* Added a warning when using `moment-timezone` with `moment<2.6.0`.

### `0.2.1` _2014-08-02_
* Fixed support for `moment@2.8.1+`.

### `0.2.0` _2014-07-21_
* Added the ability to configure whether ambiguous or invalid input is rolled forward or backward. [#101](https://github.com/moment/moment-timezone/pull/101)
* Added `moment>=2.6.0` as a dependency in `bower.json`. [#107](https://github.com/moment/moment-timezone/issues/107)
* Fixed getting the name of a zone that was added as a linked zone. [#104](https://github.com/moment/moment-timezone/pull/104)
* Added an error message when a zone was not loaded. [#106](https://github.com/moment/moment-timezone/issues/106)

### `0.1.0` _2014-06-23_
* *Breaking:* Changed data format from Zones+Rules to just Zones. [#82](https://github.com/moment/moment-timezone/pull/82)
* *Breaking:* Removed `moment.tz.{addRule,addZone,zoneExists,zones}` as they are no longer relevant with the new data format.
* Made library 20x faster. [JSPerf results](http://jsperf.com/moment-timezone-0-1-0/2)
* Completely rewrote internals to support new data format.
* Updated the data collection process to get data directly from http://www.iana.org/time-zones.
* Updated data to IANA TZDB `2014e`.
* Updated `bower.json` to use a browser specific `main:` entry point.
* Added built files with included data.
* Added support for accurately parsing input around DST changes. [#93](https://github.com/moment/moment-timezone/pull/93)
* Added comprehensive documentation at [momentjs.com/timezone/docs/](http://momentjs.com/timezone/docs/).
* Added `moment.tz.link` for linking two identical zones.
* Added `moment.tz.zone` for getting a loaded zone.
* Added `moment.tz.load` for loading a bundled version of data from the IANA TZDB.
* Added `moment.tz.names` for getting the names of all the loaded timezones.
* Added `moment.tz.unpack` and `moment.tz.unpackBase60` for unpacking data.
* Added `moment-timezone-utils.js` for working with the packed and unpacked data.
* Fixed major memory leak. [#79](https://github.com/moment/moment-timezone/issues/79)
* Fixed global export to allow use in web workers. [#78](https://github.com/moment/moment-timezone/pull/78)
* Fixed global export in browser environments that define `window.module`. [#76](https://github.com/moment/moment-timezone/pull/76)

### `0.0.6` _2014-04-20_
* Fixed issue with preventing loading moment-timezone more than once. [#75](https://github.com/moment/moment-timezone/pull/75)

### `0.0.5` _2014-04-17_
* Improved performance with memoization. [#39](https://github.com/moment/moment-timezone/issues/39)
* Published only necessary files to npm. [#46](https://github.com/moment/moment-timezone/issues/46)
* Added better handling of timezones around DST. [#53](https://github.com/moment/moment-timezone/issues/53) [#61](https://github.com/moment/moment-timezone/issues/61) [#70](https://github.com/moment/moment-timezone/issues/70)
* Added Browserify support. [#41](https://github.com/moment/moment-timezone/issues/41)
* Added `moment.tz.zoneExists` [#73](https://github.com/moment/moment-timezone/issues/73)
* Fixed cloning moments with a timezone. [#71](https://github.com/moment/moment-timezone/issues/71)
* Prevent loading moment-timezone more than once. [#74](https://github.com/moment/moment-timezone/issues/74)

### `0.0.3` _2013-10-10_
* Added Bower support.
* Added support for newer versions of moment.
* Added support for constructing a moment with a string and zone.
* Added more links and timezone names in moment-timezone.json

### `0.0.1` _2013-07-17_
* Initial version.
