How to set date always to eastern time regardless of user's time zone

Question

I have a date given to me by a server in unix time: 1458619200000

NOTE: the other questions you have marked as \"duplicate\" don\'t show how to get there fro

Answer 1

For dayLight saving, Eastern time become 4 hours behind UTC thats why its offset is -4x60 = -240 minutes. So when Day light is not active the offset will be -300. easternTimeOffset variable value is the key point to be noted here. Kindly see this code in action in attached image.

       var offset = new Date().getTimezoneOffset();// getting offset to make time in gmt+0 zone (UTC) (for gmt+5 offset comes as -300 minutes)
        var date = new Date();
        date.setMinutes ( date.getMinutes() + offset);// date now in UTC time

        var easternTimeOffset = -240; //for dayLight saving, Eastern time become 4 hours behind UTC thats why its offset is -4x60 = -240 minutes. So when Day light is not active the offset will be -300
        date.setMinutes ( date.getMinutes() + easternTimeOffset);

Answer 2

You can easily take care of the timezone offset by using the getTimezoneOffset() function in Javascript. For example,

var dt = new Date(1458619200000);
console.log(dt); // Gives Tue Mar 22 2016 09:30:00 GMT+0530 (IST)

dt.setTime(dt.getTime()+dt.getTimezoneOffset()*60*1000);
console.log(dt); // Gives Tue Mar 22 2016 04:00:00 GMT+0530 (IST)

var offset = -300; //Timezone offset for EST in minutes.
var estDate = new Date(dt.getTime() + offset*60*1000);
console.log(estDate); //Gives Mon Mar 21 2016 23:00:00 GMT+0530 (IST)

Though, the locale string represented at the back will not change. The source of this answer is in this post. Hope this helps!

Answer 3

Moment.js (http://momentjs.com/timezone) is your friend.

You want to do something like this:

var d = new Date(1458619200000);
var myTimezone = "America/Toronto";
var myDatetimeFormat= "YYYY-MM-DD hh:mm:ss a z";
var myDatetimeString = moment(d).tz(myTimezone).format(myDatetimeFormat);

console.log(myDatetimeString); // gives me "2016-03-22 12:00:00 am EDT"