How to use timezone offset in Nodejs?

Question

I need the next flow:

var a = new Date(1337324400000, 'Europe/Amsterdam'); //+2h
console.log(a); // for example 12:00 Mon ...
a.setTimeZone('Europe/Kiev'); //+3h
console.log(a); // 13:00 Mon ...

Is there such possibility in nodejs utils api ?

Answer 1

You can use node-time , as follows:

var time = require('time');

var a = new time.Date(1337324400000);

a.setTimezone('Europe/Amsterdam');
console.log(a.toString()); // Fri May 18 2012 09:00:00 GMT+0200 (CEST)
a.setTimezone('Europe/Kiev');
console.log(a.toString()); // Fri May 18 2012 10:00:00 GMT+0300 (EEST)

Answer 2

Moment.js now has Moment Timezone

Install :

npm install --save moment-timezone

Use :

var Moment = require('moment-timezone');
Moment().tz('America/Los_Angeles').format();

Answer 3

UPDATE: there is another one now:) https://github.com/mde/timezone-js

A timezone-enabled, drop-in replacement for the stock JavaScript Date. The timezoneJS.Date object is API-compatible with JS Date, with the same getter and setter methods -- it should work fine in any code that works with normal JavaScript Dates.

---

no there is not

But you can use moment.js to make it easier http://momentjs.com/docs/

You still need to know each offset so you will need mapping like {"Europe/Amsterdam":2,"Europe/Kiev":3}

Answer 4

See Timezone package in npm. It has everything needed built in and is pure JS and seems to be the best timezone handling library available.

https://www.npmjs.com/package/timezone

http://bigeasy.github.io/timezone/

var tz = require('timezone/loaded'),
    equal = require('assert').equal,
    utc;

// Get POSIX time in UTC. 
utc = tz('2012-01-01');

// Convert UTC time to local time in a localize language. 
equal(tz(utc, '%c', 'fr_FR', 'America/Montreal'),
      'sam. 31 déc. 2011 19:00:00 EST');

• Timezone is a MicroJS library in pure JavaScript with no dependencies that provides timezone aware date math and date formatting.
• Timezone uses the IANA Database to determine the correct wall clock time anywhere in the world for any time since the dawn of standardized time.
• Timezone formats dates with a full implementation of strftime formats, including the GNU date extensions.
• Timezone represents time in POSIX time and local time using RFC 3999 date strings.
• Timezone is a full featured standards based time library in pure JavaScript for under 3K minified and gzipped.

Answer 5

使用moment-timezone.js是解析、验证和更改不同时区时间的最佳选择。