How to subtract 2 hours from user's local time?

Question

Can anyone give me a simple JavaScript code block that will allow me to display the local time minus 2 hours?

score 367 · Accepted Answer · edited Aug 16 '16 at 12:12

367

Subtract from another date object

var d = new Date();

d.setHours(d.getHours() - 2);

edited Aug 16 '16 at 12:12

David Salamon

answered Feb 09 '11 at 09:40

BrunoLM

44

I can confirm (via running in Chrome's Javascript console) that it works with a negative value. That is, `d.setHours(d.getHours() - 24)` rewinds d to the same time on the previous day. – Adam Loving Mar 05 '15 at 16:44
1

@InzamamMalik yes it's going to change the date. https://codepen.io/anon/pen/BxgqzP – BrunoLM May 25 '18 at 13:47
it may not work for some particular timezones and timestamps (when the clock was moved forward by 2 or more hours) – 4esn0k Sep 26 '20 at 20:33

score 45 · Answer 2 · answered Jun 02 '16 at 04:03

According to Javascript Date Documentation, you can easily do this way:

var twoHoursBefore = new Date();
twoHoursBefore.setHours(twoHoursBefore.getHours() - 2);

And don't worry about if hours you set will be out of 0..23 range. Date() object will update the date accordingly.

2 Answers2