I have a variable d of type Date and value '2017-05-01T01:00:00.000Z'.

My time zone is UTC-4.

When I invoke:

 d.toLocaleString("en-US", { month: "short" });

I get Apr, because the date is Apr 30, 2017 2100h UTC-4 where my Javascript is running.

Is there an easy way to get toLocaleString to treat the date instance according to its UTC equivalent?

I have a variable d of type Date and value '2017-05-01T01:00:00.000Z'.

My time zone is UTC-4.

When I invoke:

 d.toLocaleString("en-US", { month: "short" });

I get Apr, because the date is Apr 30, 2017 2100h UTC-4 where my Javascript is running.

Is there an easy way to get toLocaleString to treat the date instance according to its UTC equivalent?

• javascript

• Are you saying you'd like to be able to render the date as though your system were in GMT? – jessegavin Commented Mar 22, 2017 at 15:32
• Yes, if I understand you correctly. – u936293 Commented Mar 22, 2017 at 15:32

2 Answers 2

You can specify a parameter timeZone, which defines the target timezone to be used when formatting the date:

var date = new Date('2017-05-01T01:00:00.000Z');

console.log(date.toLocaleString("en-US", { month: "short", timeZone: 'America/New_York' }));
  // "Apr"

console.log(date.toLocaleString("en-US", { month: "short", timeZone: 'UTC' }));
  // "May"

// Adjust date to UTC 0
d = new Date(d.valueOf() + d.getTimezoneOffset() * 60000);
d.toLocaleString("en-US", { month: "short" })

UPDATE @Timo's answer is way better.