"An apple a day keeps the doctor away," and a cache a day keeps lots of things away - boredom, the blues, and all the worries of life!
The challenge is to find a cache on every day - the 1st through the 31st. The month does not matter. You need to have 31 finds, one for each of the 31 days. You can list them:
1 - 1 Jan 2009 GC1234 I Found It
2 - 2 Feb 2008 GC2345 Found it Again
3 - 3 Mar 2007 GC3456 Found Another One
... and so on.
Or, you can post a screen shot of a calendar available in several cache statistics programs. There should be a find in each of the 31 columns.

Oroginal container was "rescued" from Potter's Pond (GC3B, see logs for October 12 and 24, 2009). That one got taken, it has been replaced with a new container.
All previous finds count for this one! Have fun!