JavaScript getTimezoneOffset() Method

Definition and Usage

The getTimezoneOffset() method returns the difference in minutes between Greenwich Mean Time (GMT) and local time.

Syntax

dateObject.getTimezoneOffset()

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Tips and Notes

Note: The returned value of this method is not a constant, because of the practice of using Daylight Saving Time.
Note: This method is always used in conjunction with a Date object.

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Example

In the following example we get the difference in minutes between Greenwich Mean Time (GMT) and local time:

<script type="text/javascript"> var d = new Date(); document.write(d.getTimezoneOffset()); </script>

The output of the code above will be:

-330

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Example 2

Now we will convert the example above into GMT +/- hours:

<script type="text/javascript"> var d = new Date() var gmtHours = d.getTimezoneOffset()/60; document.write("The local time zone is: GMT " + gmtHours); </script>

The output of the code above will be:

The local time zone is: GMT -5.5