NodeJS add two hours to date?

Question

I've got a date string as such:

Tue Jul 29 2014 23:44:06 GMT+0000 (UTC)

How can I add two hours to this?

So I get:

Tue Jul 29 2014 01:44:06 GMT+0000 (UTC)

Answer 1

Here's one solution:

var date = new Date('Tue Jul 29 2014 23:44:06 GMT+0000 (UTC)').getTime();
date += (2 * 60 * 60 * 1000);
console.log(new Date(date).toUTCString());
// displays: Wed, 30 Jul 2014 01:44:06 GMT

Obviously once you have the (new) date object, you can format the output to your liking if the native Date functions do not give you what you need.

Answer 2

Using MomentJS:

var moment = require('moment');

var date1 = moment("Tue Jul 29 2014 23:44:06 GMT+0000 (UTC)");

//sets an internal flag on the moment object.
date1.utc();

console.log(date1.format("ddd MMM DD YYYY HH:mm:ss [GMT]ZZ (UTC)"));

//adds 2 hours
date1.add(2, 'h');

console.log(date1.format("ddd MMM DD YYYY HH:mm:ss [GMT]ZZ (UTC)")); 

Prints out the following:

Tue Jul 29 2014 23:44:06 GMT+0000 (UTC)

Wed Jul 30 2014 01:44:06 GMT+0000 (UTC)