Get Timezone Offset in String Format Javascript

Hi Friends,
If we want to retrieve timezone in string format like Asia/Calcutta or America/New_York in javascript. Javascript's method getTimezoneOffset() just return the offsets or you are needed to use plugin like moment.js or similar but if you don't want that you can just write your own function like this.

 
    function getTimeZone() {
        var offset = (new Date()).getTimezoneOffset();
        var timezones = {
            "-12": "Pacific/Kwajalein",
            "-11": "Pacific/Samoa",
            "-10": "Pacific/Honolulu",
            "-9": "America/Juneau",
            "-8": "America/Los_Angeles",
            "-7": "America/Denver",
            "-6": "America/Mexico_City",
            "-5": "America/New_York",
            "-4": "America/Caracas",
            "-3.5": "America/St_Johns",
            "-3": "America/Argentina/Buenos_Aires",
            "-2": "Atlantic/Azores",
            "-1": "Atlantic/Azores",
            "0": "Europe/London",
            "1": "Europe/Paris",
            "2": "Europe/Helsinki",
            "3": "Europe/Moscow",
            "3.5": "Asia/Tehran",
            "4": "Asia/Baku",
            "4.5": "Asia/Kabul",
            "5": "Asia/Karachi",
            "5.5": "Asia/Calcutta",
            "6": "Asia/Colombo",
            "7": "Asia/Bangkok",
            "8": "Asia/Singapore",
            "9": "Asia/Tokyo",
            "9.5": "Australia/Darwin",
            "10": "Pacific/Guam",
            "11": "Asia/Magadan",
            "12": "Asia/Kamchatka"
        };
        return timezones[-offset / 60];
    }

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