How to convert time with a timezone to UTC in javascript

Question

I want to write a method in javascript that takes a date and time zone and then returns a new date thats in UTC.

For example if I give it

Date: 2016/06/21 16:00:00
Time zone: America/NewYork

I should get back

Date: 2016/06/21 20:00:00

I looked at moment js, but seems like they didn't have a utc timezone name.

Looks like the standard name for UTC in this format is `Etc/UTC`; have you tried that with moment timezone? — ShadowRanger, Jun 22 '16 at 00:28
http://stackoverflow.com/questions/948532/how-do-you-convert-a-javascript-date-to-utc — Jeremy Jackson, Jun 22 '16 at 00:28
Jeremy, that answer just does a string formatting to make it look like a utc date. It does not convert time. For it to convert time to utc, it also has to know the time zone of the date that you are providing. — developer747, Jun 22 '16 at 00:43

score 3 · Answer 1 · answered Jun 22 '16 at 01:12

3

Please try

moment.tz("2016-06-21 16:00:00", "America/New_York").utc().format();

It gives desired output

answered Jun 22 '16 at 01:12

Rohit Shedage

1

This is correct, but note to the OP that if you have that date format you will need to specify a format parameter as well as it is not ISO8601 – Maggie Pint Jun 22 '16 at 01:33

1 Answers1