How can I get the timezone name in JavaScript

Question

I know how to get the timezone offset  but what I need is the ability to detect something like  America New York   Is that even possible from JavaScript or is that something I am going to have to guestimate based on the offset

User · Answer

This gets the timezone code  e g   GMT  in older javascript  I m using google app script with old engine    function getTimezoneName       return new Date   toString   get                  I m just putting this here in case someone needs it

User · Answer

Try this code refer from here   lt script type  text javascript  src    ajax googleapis com ajax libs jquery 2 0 0 jquery min js  gt   lt  script gt   lt script type  text javascript  src    cdnjs cloudflare com ajax libs jstimezonedetect 1 0 4 jstz min js  gt   lt  script gt   lt script type  text javascript  gt      document  ready function        var tz   jstz determine       Determines the time zone of the browser client     var timezone   tz name       Asia Kolhata  for Indian Time       alert timezone        lt  script gt

User · Answer

Retrieve timezone by name  i e   America New York    moment tz guess

User · Answer

In javascript   the Date getTimezoneOffset   method returns the time-zone offset from UTC  in minutes  for the current locale   var x   new Date    var currentTimeZoneOffsetInHours   x getTimezoneOffset     60    Moment timezone will be a useful tool  http   momentjs com timezone   Convert Dates Between Timezones  var newYork      moment tz  2014-06-01 12 00    America New York    var losAngeles   newYork clone   tz  America Los Angeles    var london       newYork clone   tz  Europe London     newYork format          2014-06-01T12 00 00-04 00 losAngeles format       2014-06-01T09 00 00-07 00 london format           2014-06-01T17 00 00 01 00

User · Answer

You can simply write your own code by using the mapping table here  http   www timeanddate com time zones   or  use moment-timezone library  http   momentjs com timezone docs   See zone name     America Los Angeles  or  this library  https   github com Canop tzdetect js

User · Answer

Most upvoted answer is probably the best way to get the timezone  however  Intl DateTimeFormat   resolvedOptions   timeZone returns IANA timezone name by definition  which is in English   If you want the timezone s name in current user s language  you can parse it from Date s string representation like so    x000D   x000D  function getTimezoneName     x000D    const today   new Date    x000D    const short   today toLocaleDateString undefined   x000D    const full   today toLocaleDateString undefined    timeZoneName   long      x000D   x000D       Trying to remove date from the string in a locale-agnostic way x000D    const shortIndex   full indexOf short   x000D    if  shortIndex  gt   0    x000D      const trimmed   full substring 0  shortIndex    full substring shortIndex   short length   x000D       x000D         by this time  trimmed  should be the timezone s name with some punctuation - x000D         trim it from both sides x000D      return trimmed replace     s   -       s   -      g       x000D   x000D      else   x000D         in some magic case when short representation of date is not present in the long one  just return the long one as a fallback  since it should contain the timezone s name x000D      return full  x000D      x000D    x000D   x000D  console log getTimezoneName     x000D   x000D   x000D    Tested in Chrome and Firefox   Ofcourse  this will not work as intended in some of the environments  For example  node js returns a GMT offset  e g  GMT 07 00  instead of a name  But I think it s still readable as a fallback   P S  Won t work in IE11  just as the Intl    solution

User · Answer

You can use this script   http   pellepim bitbucket org jstz   Fork or clone repository here  https   bitbucket org pellepim jstimezonedetect  Once you include the script  you can get the list of timezones in -  jstz olson timezones variable    And following code is used to determine client browser s timezone   var tz   jstz determine    tz name      Enjoy jstz

User · Answer

The Internationalization API supports getting the user timezone  and is supported in all current browsers    x000D   x000D  console log Intl DateTimeFormat   resolvedOptions   timeZone  x000D   x000D   x000D    Keep in mind that on some older browser versions that support the Internationalization API  the timeZone property is set to undefined rather than the user   s timezone string  As best as I can tell  at the time of writing  July 2017  all current browsers except for IE11 will return the user timezone as a string

[javascript] How can I get the timezone name in JavaScript?

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