Converting epoch to date and vice versa
I’ve been doing a lot of date related things in Java recently, and having an independent tool to generate sane test data is very handy.
Try it here: http://www.esqsoft.com/javascript_examples/date-to-epoch.htm
Also includes free Javascript, nice.
Also check out thisother java script date library.
http://www.ajaxian.com/archives/mad-cool-date-library
The original reference is good for near dates but seems to drift quite a bit for dates way in the future. The following link seems to do a very good job of date caclulations, plus it includes a number of rather unusual calendars and things like MS-Excel date serial numbers, very handy.