JavaScript getTimezoneOffset() Method
 Complete Date Object Reference
Definition and Usage
The getTimezoneOffset() method returns the difference in minutes between
Greenwich Mean Time (GMT) and local time.
Syntax
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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.
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>
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The output of the code above will be:
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>
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The output of the code above will be:
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Complete Date Object Reference
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