Get timezone from users browser using moment timezone js

Question

What is the best way to get client s timezone and convert it to some other timezone when using moment js and moment-timezone js  I want to find out what is clients timezone and later convert his date and time into some other timezone   Does anybody has experience with this

User · Answer

You can also get your wanted time using the following JS code:

new Date(`${post.data.created_at} GMT+0200`)

In this example, my received dates were in GMT+0200 timezone. Instead of it can be every single timezone. And the returned data will be the date in your timezone. Hope this will help anyone to save time

User · Answer

var timedifference   new Date   getTimezoneOffset      This returns the difference from the clients timezone from UTC time   You can then play around with it as you like

User · Answer

When using moment js  use   var tz   moment tz guess      It will return an IANA time zone identifier  such as America Los Angeles for the US Pacific time zone   It is documented here   Internally  it first tries to get the time zone from the browser using the following call   Intl DateTimeFormat   resolvedOptions   timeZone   If you are targeting only modern browsers that support this function  and you don t need Moment-Timezone for anything else  then you can just call that directly   If Moment-Timezone doesn t get a valid result from that function  or if that function doesn t exist  then it will  guess  the time zone by testing several different dates and times against the Date object to see how it behaves   The guess is usually a good enough approximation  but not guaranteed to exactly match the time zone setting of the computer

User · Answer

All current answers provide the offset differece at current time  not at a given date   moment date  utcOffset   returns the time difference in minutes between browser time and UTC at the date passed as argument  or today  if no date passed      Here s a function to parse correct offset at the picked date    function getUtcOffset date      return moment date       subtract        moment date  utcOffset            minutes        utc

User · Answer

Using Moment library  see their website -  https   momentjs com timezone docs   using-timezones converting-to-zone   i notice they also user their own library in their website  so you can have a try using the browser console before installing it   moment   tz String    The moment tz mutator will change the time zone and update the offset   moment  2013-11-18   tz  America Toronto   format  Z       -05 00 moment  2013-11-18   tz  Europe Berlin   format  Z          01 00  This information is used consistently in other operations  like calculating the start of the day   var m   moment tz  2013-11-18 11 55    America Toronto    m format                           2013-11-18T11 55 00-05 00 m startOf  day   format            2013-11-18T00 00 00-05 00 m tz  Europe Berlin   format       2013-11-18T06 00 00 01 00 m startOf  day   format            2013-11-18T00 00 00 01 00  Without an argument  moment tz returns       the time zone name assigned to the moment instance or     undefined if a time zone has not been set   var m   moment tz  2013-11-18 11 55    America Toronto    m tz        America Toronto var m   moment tz  2013-11-18 11 55    m tz       undefined      true

[javascript] Get timezone from users browser using moment(timezone).js

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