Countdown Countup and much more (www.screeperzone.com/countdown/)
Now you can add multiple countdown, countup. Year since 0001 is supported. Gadget can be used to track almost anything - Days since or Days until birthday, anniversary, reminder, alert, appointment, dates, recurring events, family event, calendar events, celebrity events (including any news related to Bush, Paris Hilton) , sports or game events, school events, movie releases, first kiss, proposal, pregnancy, birth, parenting, election events, schedules, payment date, due date, festival, holiday, vacation, christmas, thanksgiving, Halloween, memorable trip, graduation, marriage or wedding, history, news and other historical events. It can also be used for project management, as todo list,as timer, for time management,to calculate age, anniversaries, as counter, as digital clock, as tracker.
I just expect a few parameters initially which will be provided to me when you add to google page.