A lightweight javascript date library for parsing, manipulating, and formatting dates.

npm install moment

To contribute, fork the library and install these npm packages.

npm install jshint uglify-js nodeunit

You can add tests to the files in /test/moment or add a new test file if you are adding a new feature.

To run the tests, do make test to run all tests, make test-moment to test the core library, and make test-lang to test all the languages.

To check the filesize, you can use make size.

To minify all the files, use make moment to minify moment, make langs to minify all the lang files, or just make to minfy everything.

If your code passes the unit tests (including the ones you wrote), submit a pull request.

The folks over at date.js.

Everyone who helped with php.js date.

Ryan McGeary for his work on the jQuery timeago plugin.

Moment.js is freely distributable under the terms of the MIT license.

Added moment.fn.toDate as a replacement for moment.fn.native.

Added moment.fn.sod and moment.fn.eod to get the start and end of day.

Various bugfixes.

Added support for parsing month names in the current language.

Added escape blocks for parsing tokens.

Added moment.fn.calendar to format strings like 'Today 2:30 PM', 'Tomorrow 1:25 AM', and 'Last Sunday 4:30 AM'.

Added moment.fn.day as a setter.

Various bugfixes

Added timezones to parser and formatter.

Added moment.fn.isDST.

Added moment.fn.zone to get the timezone offset in minutes.

Various bugfixes

Added time specific diffs (months, days, hours, etc)

Added moment.fn.format localized masks. 'L LL LLL LLLL' issue 29

Fixed issue 31.

Added moment.version to get the current version.

Removed window !== undefined when checking if module exists to support browserify. issue 25

Added convenience methods for getting and setting date parts.

Added better support for moment.add().

Added better lang support in NodeJS.

Renamed library from underscore.date to Moment.js

Added Portuguese, Italian, and French language support

Added _date.lang() support. Added support for passing multiple formats to try to parse a date. _date("07-10-1986", ["MM-DD-YYYY", "YYYY-MM-DD"]); Made parse from string and single format 25% faster.

Buxfix for issue 8 and issue 9.

Buxfix for issue 5.

Dropped the redundant _date.date() in favor of _date(). Removed _date.now(), as it is a duplicate of _date() with no parameters. Removed _date.isLeapYear(yearNuumber). Use _date([yearNumber]).isLeapYear() instead. Exposed customization options through the _date.relativeTime, _date.weekdays, _date.weekdaysShort, _date.months, _date.monthsShort, and _date.ordinal variables instead of the _date.customize() function.

Added date input formats for input strings.

Added underscore.date to npm. Removed dependancies on underscore.

Added 'z' and 'zz' to _.date().format(). Cleaned up some redundant code to trim off some bytes.

Cleaned up the namespace. Moved all date manipulation and display functions to the _.date() object.

Switched to the Underscore methodology of not mucking with the native objects' prototypes. Made chaining possible.

Changed date names to be a more pseudo standardized 'dddd, MMMM Do YYYY, h:mm:ss a'. Added Date.prototype functions add, subtract, isdst, and isleapyear.

Changed function names to be more concise. Changed date format from php date format to custom format.

Initial release