This Script will set a time limit to the time someone can see a speccific page of yours. Remaining time is constantly displayed in the status bar. After time expires user is forced to change page.
Developer: geocities.com Platform: Independent Date upd:1999-08-22 Hits9509 [Visit]

Count down to a particular day plus time with this countdown script. This allows you to count down to a particular event that's time sensitive (and not just day).
Developer: dynamicdrive.com Platform: Date upd:2001-12-18 Hits18267 [Visit]

Certain situations call for the refreshing of the webpage every few seconds/ minutes (such as a webcam page). Use this script to carry out the task in a graceful, "visual" manner.
Developer: dynamicdrive.com Platform: Date upd:2001-08-22 Hits18988 [Visit]

This is a countdown generator form. Given the name and date of a future event, it generates JavaScript code that you can cut and paste into an HTML page for your Web site.
Developer: kc1yr.com Platform: Date upd:2001-09-07 Hits16852 [Visit]

Display how much time has passed since an expired date with this rare script. Show your visitors how long your site has been online, for example.
Developer: dynamicdrive.com Platform: Date upd:2001-08-22 Hits6480 [Visit]