Re-using past calendars: if you have a collection of past years' calendars, many can be used again. Below is a list of the next 20 calendar years and the published calendars that correspond to each year.

• 2004: 1976, (or '82,'93,'99 good from March on)
• 2005: 1977, 1983, or 1994
• 2006: 1978, or 1995
• 2007: 2001
• 2008: 1980
• 2009: 1981, or 1998
• 2010: 1982, 1993, or 1999
• 2011: 1977, 1983, or 1994
• 2012: 1984
• 2013: 1985
• 2014: 1986, or 1997
• 2015: 1981, or 1998
• 2016: no match
• 2017: 1978 or 1995
• 2018: 2001
• 2019: 1985
• 2020: no match
• 2021: 1982, 1993, or 1999
• 2022: 1977, 1983, 1994
• 2023: 1978, 1995
• 2024: 1996