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getTimezoneOffset Method

getTimezoneOffset Method

Returns the difference in minutes between the time on the host computer and Coordinated Universal Time (UTC).

function getTimezoneOffset() : Number

The getTimezoneOffset method returns an integer value representing the number of minutes between the time on the current machine and UTC. These values are appropriate to the computer the script is executed on. If it is called from a server script, the return value is appropriate to the server. If it is called from a client script, the return value is appropriate to the client.

This number will be positive if you are behind UTC (for example, Pacific Daylight Time), and negative if you are ahead of UTC (for example, Japan).

For example, suppose a client in Los Angeles contacts a server in New York City on December 1. getTimezoneOffset returns 480 if executed on the client, or 300 if executed on the server.

The following example illustrates the use of the getTimezoneOffset method.

function TZDemo()
{
    var d = new Date();
    var minutes = d.getTimezoneOffset();

    var s = "";
    s += "The current local time is ";
    s += minutes / 60;
    if (minutes < 0)
        s += " hours after UTC";
    else
        s += " hours before UTC";
    

    return(s);
}

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