TITLE: Why is Halloween the same as Christmas
QUESTION [5 upvotes]: Someone told me that Halloween was the same as Christmas and that it had something to do with math, is this a joke or does it actually have a mathematical basis?

REPLY [8 votes]: OCT can be interpreted as octal (base 8) and $31_8 = 25_{10}$ (31 in base 8 is 25 in base 10). And DEC can be interpreted as decimal, so OCT 31 = DEC 25.