Getting the client's timezone offset in JavaSc

Question

How can I gather the visitor's time zone information? I need the Timezone, as well as the GMT offset hours.

Answer 1

With moment.js:

moment().format('zz');

Answer 2

With momentjs, you can find current timezone as

console.log(moment().utcOffset()); // (-240, -120, -60, 0, 60, 120, 240, etc.)

<script src="https://cdn.jsdelivr.net/momentjs/2.13.0/moment.min.js"></script>

It returns utc offset in minutes.

More Info

Answer 3

function getLocalTimeZone() {
    var dd = new Date();
    var ddStr = dd.toString();
    var ddArr = ddStr.split(' ');
    var tmznSTr = ddArr[5];
    tmznSTr = tmznSTr.substring(3, tmznSTr.length);
    return tmznSTr;
}

Example : Thu Jun 21 2018 18:12:50 GMT+0530 (India Standard Time)

O/P : +0530

Answer 4

This is very good work for me:

// Translation to offset in Unix Timestamp
let timeZoneOffset = ((new Date().getTimezoneOffset())/60)*3600;

Answer 5

var offset = new Date().getTimezoneOffset();
console.log(offset);

The time-zone offset is the difference, in minutes, between UTC and local time. Note that this means that the offset is positive if the local timezone is behind UTC and negative if it is ahead. For example, if your time zone is UTC+10 (Australian Eastern Standard Time), -600 will be returned. Daylight savings time prevents this value from being a constant even for a given locale

• Mozilla Date Object reference

Note that not all timezones are offset by whole hours: for example, Newfoundland is UTC minus 3h 30m (leaving Daylight Saving Time out of the equation).

Answer 6

You can use:

moment-timezone

<script src="moment.js"></script>
<script src="moment-timezone-with-data.js"></script>

// retrieve timezone by name (i.e. "America/Chicago")
moment.tz.guess();

Browser time zone detection is rather tricky to get right, as there is little information provided by the browser.

Moment Timezone uses Date.getTimezoneOffset() and Date.toString() on a handful of moments around the current year to gather as much information about the browser environment as possible. It then compares that information with all the time zone data loaded and returns the closest match. In case of ties, the time zone with the city with largest population is returned.

console.log(moment.tz.guess()); // America/Chicago