Messier Marathon Dates

Given below are the best dates for Messier Marathons for the upcoming future years up to 2100. This table is based on data from Don Machholz' Messier Marathon Observer's Guide. Besides the Messier objects, you may also see planets these weekends, and we indicate which are difficult (D) or impossible (I), where Mercury=1, Pluto=9; all those not listed should be quite easy. Note that due to their positions in orbit the far and thus "slow" outer planets behave as follows: Pluto is always located so that it is visible in March/April during the years covered here, while Uranus has become critical in 2002 and impossible between 2007 and 2018, Neptune will become critical in 2010 and impossible some years later (Machholz' data are not exactly conclusive here, in the opinion of the present author) until the 2040s, while Saturn will come into comfortable observing location in 1999 and stay there until about 2025. The planets up to Jupiter change their positions faster so that you are pointed to the table below.

  • Historical Messier Marathon Dates since 1977
    Year  New Moon[s]          Primary Weekend      Secondary Weekend
    
    2017 Mar 28.1 Mar 25 (I: 7,8,2) Apr 01 (I: 7,8,1) 2018 Mar 17.5 Mar 17 (I: 8,7) 2019 Mar 06.7, Apr 05.4 Mar 30 (I: 8) Mar 09 (I: 8,7) 2020 Mar 24.4 Mar 21 (I: 8) Mar 28 (I: 8,7) 2021 Mar 13.4 Mar 13 2022 Mar 02.7, Apr 01.3 Apr 02 Mar 05 2023 Mar 21.7 Mar 18 Mar 25 2024 Mar 10.4 Mar 09 2025 Mar 29.5 Mar 22 Mar 29 2026 Mar 19.1 Mar 21 Mar 14 2027 Mar 08.4, Apr 07.0 Apr 03 Mar 06 2028 Mar 26.2 Mar 25 2029 Mar 15.2 Mar 17 Mar 10 2030 Mar 04.3, Apr 02.9 Mar 30 Mar 09 2031 Mar 23.2 Mar 22 2032 Mar 11.7 Mar 13 Mar 06 2033 Mar 30.7 Mar 27 Apr 02 2034 Mar 20.4 Mar 18 Mar 25 2035 Mar 10.0 Mar 10 2036 Mar 27.9 Mar 29 Mar 22 2037 Mar 17.0 Mar 14 Mar 21 2038 Mar 06.0, Apr 04.7 Apr 03 Mar 06 2039 Mar 24.8 Mar 26 Mar 19 2040 Mar 13.1 Mar 10 Mar 17 2041 Mar 02.6, Apr 01.0 Mar 30 Mar 02 2042 Mar 21.7 Mar 22 2043 Mar 11.3 Mar 14 Mar 07 2044 Mar 29.4 Mar 26 Apr 03 2045 Mar 18.7 Mar 18 2046 Mar 07.8, Apr 06.4 Mar 10 Mar 03 2047 Mar 26.5 Mar 23 Mar 30 2048 Mar 14.6 Mar 14 2049 Mar 04.0, Apr 02.5 Mar 06 Apr 03 2050 Mar 23.5 Mar 19 Mar 26 2051 Mar 12.7 Mar 11 Mar 18 2052 Mar 30.8 Mar 30 2053 Mar 20.3 Mar 22 Mar 15 2054 Mar 09.5, Apr 08.2 Mar 14 Apr 04 2055 Mar 28.3 Mar 27 Apr 03 2056 Mar 16.3 Mar 18 Mar 11 2057 Mar 05.5, Apr 04.1 Mar 31 Mar 10 2058 Mar 24.4 Mar 23 Mar 30 2059 Mar 14.0 Mar 15 Mar 08 2060 Mar 02.7, Apr 01.1 Mar 27 Apr 03 2061 Mar 21.7 Mar 19 Mar 26 2062 Mar 11.2, Apr 09.7 Mar 11 Apr 08 2063 Mar 30.0 Mar 31 Mar 24 2064 Mar 18.1 Mar 15 Mar 22 2065 Mar 07.1, Apr 05.7 Apr 04 Mar 07 2066 Mar 25.9 Mar 27 Mar 20 2067 Mar 15.3 Mar 12 Mar 19 2068 Mar 04.0, Apr 02.3 Mar 31 Mar 03 2069 Mar 23.1 Mar 23 2070 Mar 12.6 Mar 15 Mar 08 2071 Mar 31.6 Mar 28 Apr 04 2072 Mar 19.8 Mar 19 2073 Mar 08.8, Apr 07.6 Apr 01 Mar 11 2074 Mar 27.6 Mar 24 Mar 31 2075 Mar 16.8 Mar 16 2076 Mar 05.2, Apr 03.7 Apr 04 Mar 07 2077 Mar 24.3 Mar 20 Mar 27 2078 Mar 14.0 Mar 12 Mar 19 2079 Mar 03.6, Apr 02.1 Apr 01 Mar 04 2080 Mar 21.5 Mar 23 Mar 16 2081 Mar 10.6, Apr 09.3 Mar 15 Apr 05 2082 Mar 29.3 Mar 28 2083 Mar 18.4 Mar 20 Mar 13 2084 Mar 06.7, Apr 05.2 Apr 01 Mar 11 2085 Mar 25.7 Mar 24 Mar 31 2086 Mar 15.3 Mar 16 Mar 09 2087 Mar 05.0, Apr 03.4 Mar 29 Apr 05 2088 Mar 23.0 Mar 20 Mar 27 2089 Mar 12.3 Mar 12 2090 Mar 31.1 Apr 01 Mar 25 2091 Mar 20.2 Mar 17 Mar 24 2092 Mar 03.2, Apr 06.9 Apr 05 Mar 08 2093 Mar 27.1 Mar 28 Mar 21 2094 Mar 16.7 Mar 13 Mar 20 2095 Mar 06.2, Apr 04.7 Apr 02 Mar 12 2096 Mar 24.3 Mar 24 2097 Mar 13.9 Mar 16 2098 Mar 03.2, Apr 01.8 Mar 29 Apr 05 2099 Mar 21.9 Mar 21 2100 Mar 10.9, Apr 09.7 Mar 13 Apr 03
    The MAA Moonphases Calendar was of great help for compiling this list (getting New Moon times after 2019). Unix/Solaris calendar helped to determine the weekends.

    Planetary visibilities will be added for the time after 2020.

  • Historical Messier Marathon Dates since 1977


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