52 7)365 35 15 14 1 Since the quotient is 52 and the remainder is 1 when 365 is divided by 7, January 1, 2010 will be exactly 52 weeks and 1 day from Tuesday, January 1, 2009, and will therefore be on Wednesday. [Another way to state this is that 365 mod 7 = 1, and Wednesday is 1 day after Tuesday, in case you are studying modular or "clock" arithmetic.] Edwin