Thank you for your reply.
I do want to perform manipulation of dates...
If I want to get a result like http://www.birthfactdeathcalendar.net/ I need to do a find for month=december and day=23, and sort by date (for today).
It would also be nice to know on what day of the week Cicero was born.
I'm compiling a database with anniversaries and stuff. When I add a date, the date field doesn't accept dates before 01/01/1902. Is there a limit? What if I want to add dates 'bc' like the birth of Cicero, January 3, 106 BC?