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Possible Duplicate:
How to add 30 minutes to a javascript Date object?

I can get the current date object like this:

var currentDate = new Date();

How can I add 20 minutes to it?

var twentyMinutesLater = ?;
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6 Answers 6

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Use .getMinutes() to get the current minutes, then add 20 and use .setMinutes() to update the date object.

var twentyMinutesLater = new Date();
twentyMinutesLater.setMinutes(twentyMinutesLater.getMinutes() + 20);
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  • 6
    Out of curiosity, does it work in any browser, when minutes is >= 40 ? (IE6 I'm looking at you)
    – Déjà vu
    Commented Dec 23, 2010 at 10:10
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    @ring0 - yup, it'll wrap around correctly if adding past the hour, it'll update the hours.
    – Nick Craver
    Commented Dec 23, 2010 at 10:12
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    @VGE: "probably the most efficient way" Probably not, the raw value method is probably more efficient. But I can't imagine it remotely matters in real-world terms, not even in a tight loop, and the code is nice and clear to anyone doing maintenance on it.
    – T.J. Crowder
    Commented Dec 23, 2010 at 11:00
  • I would not that this will only be right when you are talking about currentDate being "now". If you want to add twenty minutes to any given date, then the declaration should be var twentyMinutesLater = new Date(currentDate);
    – Jimmy Bosse
    Commented Jun 16, 2013 at 0:17
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    @JimmyBosse: new Date(currentDate) will make a round-trip through a string and drop the milliseconds portion of the date. To clone a date accurately (and more efficiently, not that it's likely to matter), you'd want new Date(+currentDate).
    – T.J. Crowder
    Commented Feb 23, 2016 at 8:21
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Add it in milliseconds:

var currentDate = new Date();
var twentyMinutesLater = new Date(currentDate.getTime() + (20 * 60 * 1000));
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11

Just get the millisecond timestamp and add 20 minutes to it:

twentyMinutesLater = new Date(currentDate.getTime() + (20*60*1000))
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9

Just add 20 minutes in milliseconds to your date:

  var currentDate = new Date();

  currentDate.setTime(currentDate.getTime() + 20*60*1000);
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var d = new Date();
var v = new Date();
v.setMinutes(d.getMinutes()+20);
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you have a lot of answers in the post

var d1 = new Date (),
d2 = new Date ( d1 );
d2.setMinutes ( d1.getMinutes() + 20 );
alert ( d2 );
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