whencanireusethiscalendar.com

W7ppN TIL that there are only 28 different ways dates can be arranged in modern calendars. Depending on leap years, you can reuse old calendars every 6, 11 or 28 years until 2100, which will change the pattern.

GOlj TIL your 2016 calendar is reusable in 2044, 2072, and 2112. In 2017, you can re-use calendars from these years: 2006, 1995, 1989, 1978, 1967, 1961, 1950, 1939, 1933, and 1922.

jxaR TIL In 2013, you can re-use calendars from these years: 2002, 1991, 1985, 1974, 1963, 1957, 1946, 1935, 1929, and 1918.