in reply to
Your title is very close to the name of a well-known module for working with dates. I can also tell you that what you want is as easy (or Ez) as falling off a log.
This site offers all sorts of help for students. If you don't find something useful in Tutorials, try Super Search.
The same name on every site (unless it is taken already)
A different name for every site
The same name for sites I don't care about, but different names on sites I do care about
Different names for sites I don't care about, but the same name on sites I do care about
The anonymous account
Someone else's username
Root, after hacking into the site
Results (259 votes),