http://www.unixtimestamp.com/index.php
Poor old Unix timestamp branded the next “millennium bug” – which means a lot of hysteria, and a large anti-climax. This is mostly due to fact by 2038, the timestamp format will have outgrown 32-bit systems. 64-bit systems won’t have a problem until the sun implodes (sometime in the next 5 billion to 7 billion years).