Reusing calendars from previous years in not only frugal, it also makes you a big nerd. For 2010, you can use any calendar from 1909,
1915, 1926, 1937, 1943, 1954, 1965, 1971, 1982, 1993, and 1999.
Conversely, your 2009 calendar will be useful again in 2015, 2026, 2037, 2043, 2054, 2065, 2071, 2082, 2093, and 2099, so if you can hang onto it, it might make a good gag gift six years from now.

Here is a online calculator to find the matches for other years.

Originally posted 2009-07-06 00:56:17.