Get time of specific timezone

Question

I am using a JavaScript Date class  amp  trying to get the current date using getDate   method  But obviously it is loading system date  amp  time  I am running the code from India but I want to get the date  amp  time of UK using the same method  How can I do that

User · Accepted Answer

If you know the UTC offset then you can pass it and get the time using the following function:

function calcTime(city, offset) {
    // create Date object for current location
    var d = new Date();

    // convert to msec
    // subtract local time zone offset
    // get UTC time in msec
    var utc = d.getTime() + (d.getTimezoneOffset() * 60000);

    // create new Date object for different city
    // using supplied offset
    var nd = new Date(utc + (3600000*offset));

    // return time as a string
    return "The local time for city"+ city +" is "+ nd.toLocaleString();
}

alert(calcTime('Bombay', '+5.5'));

Taken from: Convert Local Time to Another

User · Answer

You can use getUTCDate   and the related getUTC      methods to access a time based off UTC time  and then convert   If you wish  you can use valueOf    which returns the number of seconds  in UTC  since the Unix epoch  and work with that  but it s likely going to be much more involved

User · Answer

This is Correct way to get     function getTime offset                        var d   new Date                localTime   d getTime                localOffset   d getTimezoneOffset     60000                  obtain UTC time in msec             utc   localTime   localOffset                 create new Date object for different city                using supplied offset             var nd   new Date utc    3600000 offset                  nd   3600000   nd              utc   new Date utc                  return time as a string                 local   html nd toLocaleString                     utc   html utc toLocaleString

User · Answer

You could use Intl DateTimeFormat    x000D   x000D  let options     x000D      timeZone   Europe London   x000D      year   numeric   x000D      month   numeric   x000D      day   numeric   x000D      hour   numeric   x000D      minute   numeric   x000D      second   numeric   x000D       x000D    formatter   new Intl DateTimeFormat     options   x000D   x000D  console log formatter format new Date      x000D   x000D   x000D    Alternatively  if you re formatting just once instead of bulk use Date prototype toLocaleDateString      new Date    toLocaleString     options    Unfortunately browsers are not required to understand timezones other than UTC  so try these blocks and figure out an alternative in case it fails  for example fetch the timezone offset from a server

User · Answer

The best way to do this is to use getLocaleString  like this   Create a date object   date   new Date 0    If you are in Berlin  this should convert to this string      Thu Jan 01 1970 01 00 00 GMT 0100  CET    Get the hours in Athens   date toLocaleString  de-DE    hour   2-digit     hour12  false  timeZone   Europe Athens           02    Get the hours in Shanghai   date toLocaleString  de-DE    hour   2-digit     hour12  false  timeZone   Asia Shanghai           08

User · Answer

short answer from client-side  NO  you have to get it from the server side

User · Answer

The  getTimezoneOffset   method should work  This will get the time between your time zone and GMT  You can then calculate to whatever you want

User · Answer

If it s really important that you have the correct date and time  it s best to have a service on your server  which you of course have running in UTC  that returns the time  You can then create a new Date on the client and compare the values and if necessary adjust all dates with the offset from the server time   Why do this  I ve had bug reports that was hard to reproduce because I could not find the error messages in the server log  until I noticed that the bug report was mailed two days after I d received it  You can probably trust the browser to correctly handle time-zone conversion when being sent a UTC timestamp  but you obviously cannot trust the users to have their system clock correctly set   If the users have their timezone incorrectly set too  there is not really any solution  other than printing the current server time in  local  time

User · Answer

before you get too excited this was written in 2011   if I were to do this these days I would use Intl DateTimeFormat  Here is a link to give you an idea of what type of support this had in 2011   original answer now  very  outdated  Date getTimezoneOffset    The getTimezoneOffset   method returns the time difference between Greenwich Mean Time  GMT  and local time  in minutes   For example  If your time zone is GMT 2  -120 will be returned   Note  This method is always used in conjunction with a Date object   var d   new Date   var gmtHours   -d getTimezoneOffset   60  document write  The local time zone is  GMT     gmtHours     output The local time zone is  GMT 11

[javascript] Get time of specific timezone

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