Calendar functionality in MySql
===

I have the following MySql tables:

 - Player table         - all player stuff
 - Master_Task         - all tasks to choose from
 - Player_Master_Task  - all tasks chosen for a player
 - Player_Task_Plan    - When a player should do a task

Lets say a player has "Brush Teeth" in the Player_Master_Task.  

That task needs to be done 3 times a day every day forever.  How do I persist that?  Basically I need calendar functionality for figuring out when a task should be performed.  

Any suggestions?

Thanks,

Andrew