Javascript Seems To Be Using Time Zones Backwards With Firefox

I've run the following in the console on Firefox (version 21) and I'm getting results I don't expect. new Date(1362891600000); var date = new Date(1362891600000); var time = date.

Solution 1:

This is definitely a bug in Firefox. You should probably report it to them.

However, be aware that anything after the offset is non-standard and support varies wildly across browsers and operating systems.

For example, some browsers display a time zone name, while others display an abbreviation or internal id. Also, some keep their own strings, and some use the values returned by the operating system. And on Windows, there is a different time zone database than on Linux or Mac. Also, some browsers may localize this string using language, locale, or culture settings.

You can display it to a user, if you know the value is in their own local time zone. But don't rely on it for anything critical.