Currently you can have "Every [something] Until [MM/DD/YYYY]"
I could use "After # day|week|month until MM/DD/YYYY"
I use "After # day" right now and it is great, but some tasks only need to be done for so long and then never again.
For example, lets say you want to win a contest that you are allowed to enter once per day, but the contest if over on November, 3, 2008. After 1 day is good, but on November 4th, I can't enter it anymore, and now I have to edit the task and complete it.
After 1 day until 11/3/2008
That would work perfectly =P
Posted at 5:01pm on September 17, 2008