Ok... this is a question I get a lot Why do many admins block for 31 hours?

1. First, blocking times are not set on stone (IAR, common sense, blah blah blah).
2. Well, many vandals after blocked, just go away to do something else and come back next day at the exact same time for the block lifting to continue vandalizing. Using a 31 hours range interferes with this pattern.
3. Third, and the most important reason, 31 is a prime number but 24 is not.

Hope that explains it. -- ( drini's _vandalproof page ☎ ) 21:25, 27 October 2005 (UTC)