Date.set() is inconsistent with client side DateJS

[bogdanbiv]

First: Date.today() returns "Mon, 21 Nov 2011 22:00:00 GMT", on the client side it returns "Tue Nov 22 2011 00:00:00 GMT+0200 (EET)". The 1 day difference might come from the first issue and the funny hours need a deeper look.

Second:
Date.today().set({day: 1, month: 0, year:2011}) returns a day earlier: Fri, 31 Dec 2010 22:00:00 GMT, same 1 day difference as above

More examples of the same 1 day difference problem:
Date.today().set({day: 1, month: 10, year:2011}) is 31st of October 2011
Date.today().set({day: 1, month: 11, year:2011}) is 30th of November 2011
Date.today().set({day: 2, month: 11, year:2011}) is 2nd of December 2011