I've been busy making major changes to my time library: http://hackage.haskell.org/package/time-recurrence Things are still under heavy development. This release is to show the direction the library is heading in. A major shift in the design has been made, and the current work is an attempt at simplifying the recurring time manipulations into the smallest number of function possible, then providing some useful convenience methods on top of that. Version 0.4.2 definitely feels more Haskell-y. Here is a simple example of how things are done:

date = parse822Time "Tue, 02 Sep 1997 09:00:00 -0500" take 5 $ repeatSchedule' dailyUTC{interval = toInterval 10, moment = date} [1997-09-02 14:00:00 UTC ,1997-09-12 14:00:00 UTC ,1997-09-22 14:00:00 UTC ,1997-10-02 14:00:00 UTC ,1997-10-12 14:00:00 UTC]

In addition a test suite has been added to the package, it currently is using HUnit test-framework, and the Cabal 1.10 stdio test suite facility. Feedback, suggestions and pull requests are always welcome. -Chris