Best format to save date?

[eluser]xwero[/eluser]
Date(time) datatypes are not mysql bound, most databases have them and they have the same format or can convert formats from another database.

The functions can be database specific but if you work with a database abstraction library these functions can be handled by the library. Otherwise you only need to regex the files with sql statements. Changing a database for another is not a decision you make overnight.