IE8 date time javascript difference

Question

In JSON I receive a epoch timestamp which I'm trying to convert correctly

var d = new Date(1398693600000);

• Chrome, Firefox etc = Mon Apr 28 2014 15:00:00 GMT+0100 (BST)
• IE8 = Mon Apr 28 07:00:00 PDT 2014

So straight away it's on a different timezone. Not helpful.

Using MomentJS

moment(d).format();

• Chrome: 2014-04-28T15:00:00+01:00
• IE8: 2014-04-28T07:00:00-07:00

moment.utc(d).format();

• Chrome: 2014-04-28T14:00:00+00:00
• IE8: 2014-04-28T14:00:00+00:00

So using UTC gets consistent time across browsers, but it's an hour out. Bear in mind I'm on GMT so that will effect things down the line.

Is it a problem with MomentJS?

So, what do I need to do to sort IE8? :) I've no doubt the answer is staring me straight in the face.

Cheers

Answer 1

The two dates are the same, just the string representation is different. For instance, these are all the same exact time:

new Date('Mon Apr 28 2014 15:00:00 GMT+0100 (BST)');
new Date('Mon Apr 28 07:00:00 PDT 2014');
new Date('2014-04-28T14:00:00+00:00');
new Date('Mon Apr 28 2014 10:00:00 GMT-0400 (EDT)');

So any calculations and displays should come out correctly. Now, why you are seeing a different timezone seems strange since, AFAIK, every browser simply uses your system clock.

However, you've commented that you're using a virtual machine to test IE. It is quite likely that that VM has a different timezone set and that's why you are seeing a different text representation in IE.