Mathaversaries

1st July, 1979

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What is this?

The practice of celebrating the number of orbits a person has lived or a marriage has lasted been tradition for as long as we have measured the passing of years.

But why do we attach so much importance to that particular astronomical curiosity? Why put special emphasis on multiples of ten of these particular planetary pirouettes? Why not celebrate 1,000 days of marriage? Or 150 Mercury years alive? Or 5 Cobalt 60 half-lives?

Mathaversaries can help you remember these uncommon milestones, and ensure you never miss an excuse to celebrate.

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DateDaysEvent
7 June 2013 12,395 24 Root-2 years
22 June 2013 12,410 21 Golden ratio years
1 July 2013 12,419 34 Earth years
20 September 2013 12,500 18,000,000 minutes
20 September 2013 12,500 300,000 hours
20 January 2014 12,622 11 Pi years
21 June 2014 12,774 2,000 Pluto days
1 July 2014 12,784 35 Earth years
31 October 2014 12,906 13 e years
6 November 2014 12,912 25 Root-2 years
31 January 2015 12,998 3 Jupiter years
2 February 2015 13,000 13,000 days
3 February 2015 13,001 22 Golden ratio years
27 March 2015 13,053 19 Mars years
1 July 2015 13,149 36 Earth years
15 August 2015 13,194 19,000,000 minutes
15 August 2015 13,194 150 Mercury years
5 April 2016 13,428 26 Root-2 years
22 May 2016 13,475 7 Cobalt 60 half-lives
29 May 2016 13,482 60 Venus years
22 June 2016 13,506 3 Hydrogen 3 (Tritium) half-lives
1 July 2016 13,515 37 Earth years
16 September 2016 13,592 23 Golden ratio years
13 November 2016 13,650 500 lunar orbits
11 February 2017 13,740 20 Mars years
12 March 2017 13,769 12 Pi years
8 April 2017 13,796 1 reign of Henry VIII
16 June 2017 13,865 40 Draconic years
1 July 2017 13,880 38 Earth years
10 July 2017 13,889 20,000,000 minutes
19 July 2017 13,898 14 e years
4 September 2017 13,945 27 Root-2 years
29 October 2017 14,000 14,000 days
11 January 2018 14,074 160 Mercury years
30 April 2018 14,183 24 Golden ratio years
1 July 2018 14,245 39 Earth years
4 October 2018 14,340 3 Californium 250 half-lives
30 December 2018 14,427 21 Mars years
2 February 2019 14,461 28 Root-2 years
4 June 2019 14,583 21,000,000 minutes
1 July 2019 14,610 40 Earth years
12 December 2019 14,774 25 Golden ratio years
7 April 2020 14,891 15 e years
3 May 2020 14,917 13 Pi years
8 June 2020 14,953 170 Mercury years
1 July 2020 14,976 41 Earth years
2 July 2020 14,977 29 Root-2 years
25 July 2020 15,000 15,000 days
16 November 2020 15,114 22 Mars years
29 April 2021 15,278 22,000,000 minutes
1 July 2021 15,341 42 Earth years
25 July 2021 15,365 26 Golden ratio years
29 August 2021 15,400 8 Cobalt 60 half-lives
1 December 2021 15,494 30 Root-2 years
1 July 2022 15,706 43 Earth years
24 July 2022 15,729 70 Venus years
4 October 2022 15,801 23 Mars years
5 November 2022 15,833 180 Mercury years
26 December 2022 15,884 16 e years
8 March 2023 15,956 27 Golden ratio years
24 March 2023 15,972 23,000,000 minutes
21 April 2023 16,000 16,000 days
1 May 2023 16,010 31 Root-2 years
24 June 2023 16,064 14 Pi years
1 July 2023 16,071 44 Earth years
5 May 2024 16,380 600 lunar orbits
1 July 2024 16,437 45 Earth years
4 August 2024 16,471 40 Full moon cycles
21 August 2024 16,488 24 Mars years
29 September 2024 16,527 32 Root-2 years
19 October 2024 16,547 28 Golden ratio years
16 February 2025 16,667 24,000,000 minutes
16 February 2025 16,667 400,000 hours
2 April 2025 16,712 190 Mercury years
1 July 2025 16,802 46 Earth years
14 September 2025 16,877 17 e years
15 January 2026 17,000 17,000 days
27 February 2026 17,043 33 Root-2 years
2 June 2026 17,138 29 Golden ratio years
1 July 2026 17,167 47 Earth years
9 July 2026 17,175 25 Mars years
14 August 2026 17,211 15 Pi years
6 December 2026 17,325 9 Cobalt 60 half-lives
12 December 2026 17,331 50 Draconic years
12 December 2026 17,331 4 Jupiter years
11 January 2027 17,361 25,000,000 minutes
1 July 2027 17,532 48 Earth years
29 July 2027 17,560 34 Root-2 years
30 August 2027 17,592 200 Mercury years
27 December 2027 17,711 22nd Fibonacci number days
14 January 2028 17,729 30 Golden ratio years
26 May 2028 17,862 26 Mars years
2 June 2028 17,869 18 e years
1 July 2028 17,898 49 Earth years
17 September 2028 17,976 80 Venus years
11 October 2028 18,000 18,000 days
19 October 2028 18,008 4 Hydrogen 3 (Tritium) half-lives
5 December 2028 18,055 26,000,000 minutes
26 December 2028 18,076 35 Root-2 years
1 July 2029 18,263 50 Earth years
27 August 2029 18,320 31 Golden ratio years
5 October 2029 18,359 16 Pi years
26 January 2030 18,472 210 Mercury years
13 April 2030 18,549 27 Mars years
27 May 2030 18,593 36 Root-2 years
1 July 2030 18,628 51 Earth years
31 October 2030 18,750 27,000,000 minutes
20 February 2031 18,862 19 e years
10 April 2031 18,911 32 Golden ratio years
1 July 2031 18,993 52 Earth years
8 July 2031 19,000 19,000 days
25 October 2031 19,109 37 Root-2 years
26 October 2031 19,110 700 lunar orbits
5 November 2031 19,120 4 Californium 250 half-lives
16 December 2031 19,161 3,000 Pluto days
29 February 2032 19,236 28 Mars years
14 March 2032 19,250 10 Cobalt 60 half-lives
23 June 2032 19,351 220 Mercury years
1 July 2032 19,359 53 Earth years
24 September 2032 19,444 28,000,000 minutes
21 November 2032 19,502 33 Golden ratio years
25 November 2032 19,506 17 Pi years
25 March 2033 19,626 38 Root-2 years
1 July 2033 19,724 54 Earth years
9 November 2033 19,855 20 e years
16 January 2034 19,923 29 Mars years
3 April 2034 20,000 20,000 days
1 July 2034 20,089 55 Earth years
5 July 2034 20,093 34 Golden ratio years
20 August 2034 20,139 29,000,000 minutes
23 August 2034 20,142 39 Root-2 years
12 November 2034 20,223 90 Venus years
20 November 2034 20,231 230 Mercury years
1 July 2035 20,454 56 Earth years
13 November 2035 20,589 50 Full moon cycles
4 December 2035 20,610 30 Mars years
17 January 2036 20,654 18 Pi years
22 January 2036 20,659 40 Root-2 years
16 February 2036 20,684 35 Golden ratio years
8 June 2036 20,797 60 Draconic years
1 July 2036 20,820 57 Earth years
14 July 2036 20,833 30,000,000 minutes
14 July 2036 20,833 500,000 hours
29 July 2036 20,848 21 e years
28 December 2036 21,000 21,000 days
17 April 2037 21,110 240 Mercury years
21 June 2037 21,175 41 Root-2 years
21 June 2037 21,175 11 Cobalt 60 half-lives
1 July 2037 21,185 58 Earth years
29 September 2037 21,275 36 Golden ratio years
20 October 2037 21,296 2 Curium 243 half-lives
21 October 2037 21,297 31 Mars years
9 June 2038 21,528 31,000,000 minutes
1 July 2038 21,550 59 Earth years
23 October 2038 21,664 5 Jupiter years
23 October 2038 21,664 2 Saturn years
19 November 2038 21,691 42 Root-2 years
9 March 2039 21,801 19 Pi years
17 April 2039 21,840 800 lunar orbits
17 April 2039 21,840 22 e years
13 May 2039 21,866 37 Golden ratio years
1 July 2039 21,915 60 Earth years
8 September 2039 21,984 32 Mars years
14 September 2039 21,990 250 Mercury years
24 September 2039 22,000 22,000 days
19 April 2040 22,208 43 Root-2 years
3 May 2040 22,222 22222 days
3 May 2040 22,222 32,000,000 minutes
1 July 2040 22,281 61 Earth years
24 December 2040 22,457 38 Golden ratio years
6 January 2041 22,470 100 Venus years
15 February 2041 22,510 5 Hydrogen 3 (Tritium) half-lives
1 July 2041 22,646 62 Earth years
26 July 2041 22,671 33 Mars years
17 September 2041 22,724 44 Root-2 years
4 January 2042 22,833 23 e years
10 February 2042 22,870 260 Mercury years
29 March 2042 22,917 33,000,000 minutes
30 April 2042 22,949 20 Pi years
20 June 2042 23,000 23,000 days
1 July 2042 23,011 63 Earth years
7 August 2042 23,048 39 Golden ratio years
28 September 2042 23,100 12 Cobalt 60 half-lives
15 November 2042 23,148 2 gigaseconds
1 February 2043 23,226 1 reign of Queen Victoria
13 June 2043 23,358 34 Mars years
1 July 2043 23,376 64 Earth years
21 February 2044 23,611 34,000,000 minutes
20 March 2044 23,639 40 Golden ratio years
1 July 2044 23,742 65 Earth years
8 July 2044 23,749 270 Mercury years
23 September 2044 23,826 24 e years
6 December 2044 23,900 5 Californium 250 half-lives
16 March 2045 24,000 24,000 days
30 April 2045 24,045 35 Mars years
20 June 2045 24,096 21 Pi years
1 July 2045 24,107 66 Earth years
1 November 2045 24,230 41 Golden ratio years
4 December 2045 24,263 70 Draconic years
15 January 2046 24,305 35,000,000 minutes
1 July 2046 24,472 67 Earth years
7 October 2046 24,570 900 lunar orbits
5 December 2046 24,629 280 Mercury years
21 February 2047 24,707 60 Full moon cycles
3 March 2047 24,717 110 Venus years
18 March 2047 24,732 36 Mars years
13 June 2047 24,819 25 e years
15 June 2047 24,821 42 Golden ratio years
1 July 2047 24,837 68 Earth years
11 December 2047 25,000 25,000 days
11 December 2047 25,000 36,000,000 minutes
11 December 2047 25,000 600,000 hours
5 January 2048 25,025 13 Cobalt 60 half-lives
1 July 2048 25,203 69 Earth years
11 August 2048 25,244 22 Pi years
26 January 2049 25,412 43 Golden ratio years
2 February 2049 25,419 37 Mars years
2 May 2049 25,508 290 Mercury years
11 June 2049 25,548 4,000 Pluto days
1 July 2049 25,568 70 Earth years
4 November 2049 25,694 37,000,000 minutes
1 March 2050 25,811 26 e years
1 July 2050 25,933 71 Earth years
2 September 2050 25,996 6 Jupiter years
6 September 2050 26,000 26,000 days
9 September 2050 26,003 44 Golden ratio years
21 December 2050 26,106 38 Mars years
1 July 2051 26,298 72 Earth years
29 September 2051 26,388 300 Mercury years
30 September 2051 26,389 38,000,000 minutes
2 October 2051 26,391 23 Pi years
1 July 2052 26,664 73 Earth years
7 November 2052 26,793 39 Mars years
18 November 2052 26,804 27 e years
13 April 2053 26,950 14 Cobalt 60 half-lives
27 April 2053 26,964 120 Venus years
2 June 2053 27,000 27,000 days
14 June 2053 27,012 6 Hydrogen 3 (Tritium) half-lives
1 July 2053 27,029 74 Earth years
24 August 2053 27,083 39,000,000 minutes
25 February 2054 27,268 310 Mercury years
29 March 2054 27,300 1,000 lunar orbits
1 July 2054 27,394 75 Earth years
25 September 2054 27,480 40 Mars years
22 November 2054 27,538 24 Pi years
15 January 2055 27,592 2 reigns of Henry VIII
2 June 2055 27,730 80 Draconic years
1 July 2055 27,759 76 Earth years
20 July 2055 27,778 40,000,000 minutes
8 August 2055 27,797 28 e years
27 February 2056 28,000 28,000 days
1 July 2056 28,125 77 Earth years
23 July 2056 28,147 320 Mercury years
12 August 2056 28,167 41 Mars years
13 June 2057 28,472 41,000,000 minutes
1 July 2057 28,490 78 Earth years
15 December 2057 28,657 23rd Fibonacci number days
7 January 2058 28,680 6 Californium 250 half-lives
13 January 2058 28,686 25 Pi years
27 April 2058 28,790 29 e years
1 June 2058 28,825 70 Full moon cycles
30 June 2058 28,854 42 Mars years
1 July 2058 28,855 79 Earth years
21 July 2058 28,875 15 Cobalt 60 half-lives
23 November 2058 29,000 29,000 days
20 December 2058 29,027 330 Mercury years
8 May 2059 29,166 42,000,000 minutes
9 May 2059 29,167 700,000 hours
22 June 2059 29,211 130 Venus years
1 July 2059 29,220 80 Earth years
17 May 2060 29,541 43 Mars years
1 July 2060 29,586 81 Earth years
13 January 2061 29,782 30 e years
5 March 2061 29,833 26 Pi years
2 April 2061 29,861 43,000,000 minutes
17 May 2061 29,906 340 Mercury years
1 July 2061 29,951 82 Earth years
19 August 2061 30,000 30,000 days
18 September 2061 30,030 1,100 lunar orbits
4 April 2062 30,228 44 Mars years
23 April 2062 30,247 4321 weeks
1 July 2062 30,316 83 Earth years
14 July 2062 30,329 7 Jupiter years
25 February 2063 30,555 44,000,000 minutes
1 July 2063 30,681 84 Earth years
3 October 2063 30,775 31 e years
14 October 2063 30,786 350 Mercury years
28 October 2063 30,800 16 Cobalt 60 half-lives
20 February 2064 30,915 45 Mars years
26 April 2064 30,981 27 Pi years
15 May 2064 31,000 31,000 days
1 July 2064 31,047 85 Earth years
27 November 2064 31,196 90 Draconic years
20 January 2065 31,250 45,000,000 minutes
1 July 2065 31,412 86 Earth years
16 August 2065 31,458 140 Venus years
11 October 2065 31,514 7 Hydrogen 3 (Tritium) half-lives
7 January 2066 31,602 46 Mars years
12 March 2066 31,666 360 Mercury years
22 June 2066 31,768 32 e years
1 July 2066 31,777 87 Earth years
6 December 2066 31,935 5,000 Pluto days
15 December 2066 31,944 46,000,000 minutes
15 December 2066 31,944 3 Curium 243 half-lives
9 February 2067 32,000 32,000 days
17 June 2067 32,128 28 Pi years
1 July 2067 32,142 88 Earth years
25 November 2067 32,289 47 Mars years
19 June 2068 32,496 3 Saturn years
1 July 2068 32,508 89 Earth years
7 August 2068 32,545 370 Mercury years
9 November 2068 32,639 47,000,000 minutes
3 February 2069 32,725 17 Cobalt 60 half-lives
10 March 2069 32,760 1,200 lunar orbits
11 March 2069 32,761 33 e years
1 July 2069 32,873 90 Earth years
8 September 2069 32,942 80 Full moon cycles
12 October 2069 32,976 48 Mars years
5 November 2069 33,000 33,000 days
1 July 2070 33,238 91 Earth years
8 August 2070 33,276 29 Pi years
4 October 2070 33,333 33333 days
4 October 2070 33,333 48,000,000 minutes
4 October 2070 33,333 800,000 hours
4 January 2071 33,425 380 Mercury years
8 February 2071 33,460 7 Californium 250 half-lives
1 July 2071 33,603 92 Earth years
30 August 2071 33,663 49 Mars years
11 October 2071 33,705 150 Venus years
28 November 2071 33,753 34 e years
1 July 2072 33,969 93 Earth years
1 August 2072 34,000 34,000 days
29 August 2072 34,028 49,000,000 minutes
1 June 2073 34,304 390 Mercury years
1 July 2073 34,334 94 Earth years
17 July 2073 34,350 50 Mars years
28 September 2073 34,423 30 Pi years
13 May 2074 34,650 18 Cobalt 60 half-lives
25 May 2074 34,662 100 Draconic years
25 May 2074 34,662 8 Jupiter years
1 July 2074 34,699 95 Earth years
24 July 2074 34,722 3 gigaseconds
24 July 2074 34,722 50,000,000 minutes
17 August 2074 34,746 35 e years
28 April 2075 35,000 35,000 days
4 June 2075 35,037 51 Mars years
1 July 2075 35,064 96 Earth years
29 October 2075 35,184 400 Mercury years
17 June 2076 35,416 51,000,000 minutes
1 July 2076 35,430 97 Earth years
30 August 2076 35,490 1,300 lunar orbits
18 November 2076 35,570 31 Pi years
21 April 2077 35,724 52 Mars years
6 May 2077 35,739 36 e years
1 July 2077 35,795 98 Earth years
5 December 2077 35,952 160 Venus years
22 January 2078 36,000 36,000 days
7 February 2078 36,016 8 Hydrogen 3 (Tritium) half-lives
27 March 2078 36,064 410 Mercury years
13 May 2078 36,111 52,000,000 minutes
1 July 2078 36,160 99 Earth years
9 March 2079 36,411 53 Mars years
1 July 2079 36,525 100 Earth years
20 August 2079 36,575 19 Cobalt 60 half-lives
10 January 2080 36,718 32 Pi years
24 January 2080 36,732 37 e years
6 April 2080 36,805 53,000,000 minutes
1 July 2080 36,891 101 Earth years
22 August 2080 36,943 420 Mercury years
18 October 2080 37,000 37,000 days
17 December 2080 37,060 90 Full moon cycles
24 January 2081 37,098 54 Mars years
1 July 2081 37,256 102 Earth years
2 March 2082 37,500 54,000,000 minutes
2 March 2082 37,500 900,000 hours
1 July 2082 37,621 103 Earth years
12 October 2082 37,724 38 e years
12 December 2082 37,785 55 Mars years
19 January 2083 37,823 430 Mercury years
2 March 2083 37,865 33 Pi years
1 July 2083 37,986 104 Earth years
15 July 2083 38,000 38,000 days
20 November 2083 38,128 110 Draconic years
25 January 2084 38,194 55,000,000 minutes
30 January 2084 38,199 170 Venus years
20 February 2084 38,220 1,400 lunar orbits
11 March 2084 38,240 8 Californium 250 half-lives
1 June 2084 38,322 6,000 Pluto days
1 July 2084 38,352 105 Earth years
29 October 2084 38,472 56 Mars years
26 November 2084 38,500 20 Cobalt 60 half-lives
16 June 2085 38,702 440 Mercury years
1 July 2085 38,717 39 e years
1 July 2085 38,717 106 Earth years
20 December 2085 38,889 56,000,000 minutes
4 April 2086 38,994 9 Jupiter years
10 April 2086 39,000 39,000 days
23 April 2086 39,013 34 Pi years
1 July 2086 39,082 107 Earth years
16 September 2086 39,159 57 Mars years
1 July 2087 39,447 108 Earth years
13 November 2087 39,582 450 Mercury years
14 November 2087 39,583 57,000,000 minutes
20 March 2088 39,710 40 e years
1 July 2088 39,813 109 Earth years
3 August 2088 39,846 58 Mars years
4 January 2089 40,000 40,000 days
13 June 2089 40,160 35 Pi years
1 July 2089 40,178 110 Earth years
9 October 2089 40,278 58,000,000 minutes
5 March 2090 40,425 21 Cobalt 60 half-lives
26 March 2090 40,446 180 Venus years
11 April 2090 40,462 460 Mercury years
6 June 2090 40,518 9 Hydrogen 3 (Tritium) half-lives
21 June 2090 40,533 59 Mars years
1 July 2090 40,543 111 Earth years
8 December 2090 40,703 41 e years
1 July 2091 40,908 112 Earth years
12 August 2091 40,950 1,500 lunar orbits
3 September 2091 40,972 59,000,000 minutes
1 October 2091 41,000 41,000 days
27 March 2092 41,178 100 Full moon cycles
8 May 2092 41,220 60 Mars years
1 July 2092 41,274 113 Earth years
4 August 2092 41,308 36 Pi years
6 September 2092 41,341 470 Mercury years
23 October 2092 41,388 3 reigns of Henry VIII
17 May 2093 41,594 120 Draconic years
1 July 2093 41,639 114 Earth years
28 July 2093 41,666 60,000,000 minutes
29 July 2093 41,667 1,000,000 hours
26 August 2093 41,695 42 e years
26 March 2094 41,907 61 Mars years
27 June 2094 42,000 42,000 days
1 July 2094 42,004 115 Earth years
3 February 2095 42,221 480 Mercury years
12 June 2095 42,350 22 Cobalt 60 half-lives
23 June 2095 42,361 61,000,000 minutes
1 July 2095 42,369 116 Earth years
25 September 2095 42,455 37 Pi years
9 February 2096 42,592 4 Curium 243 half-lives
11 February 2096 42,594 62 Mars years
15 May 2096 42,688 43 e years
20 May 2096 42,693 190 Venus years
1 July 2096 42,735 117 Earth years
23 March 2097 43,000 43,000 days
12 April 2097 43,020 9 Californium 250 half-lives
17 May 2097 43,055 62,000,000 minutes
1 July 2097 43,100 490 Mercury years
1 July 2097 43,100 118 Earth years
29 December 2097 43,281 63 Mars years
13 February 2098 43,327 10 Jupiter years
14 February 2098 43,328 4 Saturn years
1 July 2098 43,465 119 Earth years
15 November 2098 43,602 38 Pi years
1 February 2099 43,680 1,600 lunar orbits
2 February 2099 43,681 44 e years
12 April 2099 43,750 63,000,000 minutes
1 July 2099 43,830 120 Earth years
16 November 2099 43,968 64 Mars years
28 November 2099 43,980 500 Mercury years
18 December 2099 44,000 44,000 days
1 July 2100 44,195 121 Earth years
19 September 2100 44,275 23 Cobalt 60 half-lives
7 March 2101 44,444 44444 days
7 March 2101 44,444 64,000,000 minutes
1 July 2101 44,560 122 Earth years
4 October 2101 44,655 65 Mars years
27 November 2101 44,709 7,000 Pluto days
7 January 2102 44,750 39 Pi years
27 April 2102 44,860 510 Mercury years
1 July 2102 44,925 123 Earth years
16 July 2102 44,940 200 Venus years
14 September 2102 45,000 45,000 days
4 October 2102 45,020 10 Hydrogen 3 (Tritium) half-lives
14 November 2102 45,061 130 Draconic years
31 January 2103 45,139 65,000,000 minutes
1 July 2103 45,290 124 Earth years
7 July 2103 45,296 110 Full moon cycles
22 August 2103 45,342 66 Mars years
1 July 2104 45,656 125 Earth years
22 September 2104 45,739 520 Mercury years
25 December 2104 45,833 66,000,000 minutes
25 December 2104 45,833 1,100,000 hours
27 February 2105 45,897 40 Pi years
10 June 2105 46,000 46,000 days
1 July 2105 46,021 126 Earth years
9 July 2105 46,029 67 Mars years
27 December 2105 46,200 24 Cobalt 60 half-lives
2 April 2106 46,296 4 gigaseconds
13 June 2106 46,368 24th Fibonacci number days
1 July 2106 46,386 127 Earth years
25 July 2106 46,410 1,700 lunar orbits
5 September 2106 46,452 2 reigns of Queen Victoria
19 November 2106 46,527 67,000,000 minutes
19 February 2107 46,619 530 Mercury years
27 May 2107 46,716 68 Mars years
1 July 2107 46,751 128 Earth years
6 March 2108 47,000 47,000 days
20 April 2108 47,045 41 Pi years
1 July 2108 47,117 129 Earth years
9 September 2108 47,187 210 Venus years
14 October 2108 47,222 68,000,000 minutes
13 April 2109 47,403 69 Mars years
1 July 2109 47,482 130 Earth years
17 July 2109 47,498 540 Mercury years
26 December 2109 47,660 11 Jupiter years
15 May 2110 47,800 10 Californium 250 half-lives
1 July 2110 47,847 131 Earth years
8 September 2110 47,916 69,000,000 minutes
1 December 2110 48,000 48,000 days
1 March 2111 48,090 70 Mars years
5 April 2111 48,125 25 Cobalt 60 half-lives
11 June 2111 48,192 42 Pi years
1 July 2111 48,212 132 Earth years
14 December 2111 48,378 550 Mercury years
11 May 2112 48,527 140 Draconic years
1 July 2112 48,578 133 Earth years
3 August 2112 48,611 70,000,000 minutes
16 January 2113 48,777 71 Mars years
1 July 2113 48,943 134 Earth years
27 August 2113 49,000 49,000 days
14 January 2114 49,140 1,800 lunar orbits
12 May 2114 49,258 560 Mercury years
28 June 2114 49,305 71,000,000 minutes
1 July 2114 49,308 135 Earth years
2 August 2114 49,340 43 Pi years
15 October 2114 49,414 120 Full moon cycles
4 November 2114 49,434 220 Venus years
4 December 2114 49,464 72 Mars years
31 January 2115 49,522 11 Hydrogen 3 (Tritium) half-lives
1 July 2115 49,673 136 Earth years
23 May 2116 50,000 50,000 days
23 May 2116 50,000 72,000,000 minutes
23 May 2116 50,000 1,200,000 hours
End of time ∞ Infinity-versary

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DateDaysEvent
2 July 1979 1 One day
7 July 1979 6 1st even-perfect-number days
8 July 1979 7 One week
28 July 1979 27 1 lunar orbit
29 July 1979 28 2nd even-perfect-number days
1 August 1979 31 One month
12 August 1979 42 Life-universe-and-everything
25 August 1979 55 10th Fibonacci number days
8 September 1979 69 Naughty-versary
9 September 1979 70 Smallest-weird-number days
28 September 1979 89 11th Fibonacci number days
9 October 1979 100 100 days
1 November 1979 123 123 days
22 November 1979 144 12th Fibonacci number days
17 January 1980 200 200 days
19 February 1980 233 13th Fibonacci number days
30 March 1980 273 10 lunar orbits
26 April 1980 300 300 days
26 April 1980 300 Sparta!
17 May 1980 321 321 days
1 July 1980 366 1 Earth year
12 July 1980 377 14th Fibonacci number days
4 August 1980 400 400 days
8 August 1980 404 Anniversary Not Found
8 November 1980 496 3rd even-perfect-number days
12 November 1980 500 500 days
15 November 1980 503 Anniversary Forbidden
28 November 1980 516 1 Root-2 years
11 February 1981 591 1 Golden ratio years
20 February 1981 600 600 days
2 March 1981 610 15th Fibonacci number days
27 April 1981 666 Lucifersary
18 May 1981 687 1 Mars year
25 May 1981 694 1,000,000 minutes
31 May 1981 700 700 days
1 July 1981 731 2 Earth years
1 August 1981 762 Feynman-point days
8 September 1981 800 800 days
8 November 1981 861 123 weeks
27 November 1981 880 10 Mercury years
17 December 1981 900 900 days
14 March 1982 987 16th Fibonacci number days
20 March 1982 993 1 e years
27 March 1982 1,000 1,000 days
29 April 1982 1,033 2 Root-2 years
1 July 1982 1,096 3 Earth years
16 July 1982 1,111 1111 days
21 August 1982 1,147 1 Pi years
25 September 1982 1,182 2 Golden ratio years
24 October 1982 1,211 4th look-and-say number days
16 November 1982 1,234 1234 days
27 February 1983 1,337 1337 days
27 March 1983 1,365 50 lunar orbits
5 April 1983 1,374 2 Mars years
20 April 1983 1,389 2,000,000 minutes
1 July 1983 1,461 4 Earth years
27 September 1983 1,549 3 Root-2 years
14 November 1983 1,597 17th Fibonacci number days
25 March 1984 1,729 Hardy-Ramanujan-number days
24 April 1984 1,759 20 Mercury years
8 May 1984 1,773 3 Golden ratio years
1 July 1984 1,827 5 Earth years
7 October 1984 1,925 1 Cobalt 60 half-lives
6 December 1984 1,985 2 e years
8 December 1984 1,987 300th prime number (1987) days
21 December 1984 2,000 2,000 days
20 February 1985 2,061 3 Mars years
25 February 1985 2,066 4 Root-2 years
14 March 1985 2,083 3,000,000 minutes
1 July 1985 2,192 6 Earth years
31 July 1985 2,222 2222 days
25 August 1985 2,247 321 weeks
25 August 1985 2,247 10 Venus years
12 October 1985 2,295 2 Pi years
28 October 1985 2,311 5th Euclid-prime days
20 December 1985 2,364 4 Golden ratio years
1 July 1986 2,557 7 Earth years
26 July 1986 2,582 5 Root-2 years
28 July 1986 2,584 18th Fibonacci number days
21 September 1986 2,639 30 Mercury years
21 December 1986 2,730 100 lunar orbits
8 January 1987 2,748 4 Mars years
7 February 1987 2,778 4,000,000 minutes
1 July 1987 2,922 8 Earth years
3 August 1987 2,955 5 Golden ratio years
26 August 1987 2,978 3 e years
17 September 1987 3,000 3,000 days
25 December 1987 3,099 6 Root-2 years
28 March 1988 3,193 500 Pluto days
1 July 1988 3,288 9 Earth years
15 August 1988 3,333 3333 days
25 November 1988 3,435 5 Mars years
2 December 1988 3,442 3 Pi years
26 December 1988 3,466 10 Draconic years
1 January 1989 3,472 5,000,000 minutes
16 February 1989 3,518 40 Mercury years
16 March 1989 3,546 6 Golden ratio years
24 May 1989 3,615 7 Root-2 years
1 July 1989 3,653 10 Earth years
14 January 1990 3,850 2 Cobalt 60 half-lives
15 May 1990 3,971 4 e years
13 June 1990 4,000 4,000 days
1 July 1990 4,018 11 Earth years
25 September 1990 4,104 Second-positive-integer-which-can-be-expressed-as-the-sum-of-two-positive-cubes-in-two-different-ways days
9 October 1990 4,118 10 Full moon cycles
13 October 1990 4,122 6 Mars years
23 October 1990 4,132 8 Root-2 years
28 October 1990 4,137 7 Golden ratio years
27 November 1990 4,167 6,000,000 minutes
27 November 1990 4,167 100,000 hours
11 December 1990 4,181 19th Fibonacci number days
30 April 1991 4,321 4321 days
12 May 1991 4,333 1 Jupiter year
1 July 1991 4,383 12 Earth years
16 July 1991 4,398 50 Mercury years
31 August 1991 4,444 4444 days
20 October 1991 4,494 20 Venus years
28 October 1991 4,502 1 Hydrogen 3 (Tritium) half-lives
24 January 1992 4,590 4 Pi years
22 March 1992 4,648 9 Root-2 years
10 June 1992 4,728 8 Golden ratio years
1 July 1992 4,749 13 Earth years
1 August 1992 4,780 1 Californium 250 half-lives
30 August 1992 4,809 7 Mars years
21 October 1992 4,861 7,000,000 minutes
1 February 1993 4,964 5 e years
9 March 1993 5,000 5,000 days
18 April 1993 5,040 8th colossally-abundant-number days
1 July 1993 5,114 14 Earth years
21 August 1993 5,165 10 Root-2 years
12 December 1993 5,278 60 Mercury years
22 January 1994 5,319 9 Golden ratio years
12 June 1994 5,460 200 lunar orbits
1 July 1994 5,479 15 Earth years
18 July 1994 5,496 8 Mars years
15 September 1994 5,555 5555 days
16 September 1994 5,556 8,000,000 minutes
19 January 1995 5,681 11 Root-2 years
16 March 1995 5,737 5 Pi years
23 April 1995 5,775 3 Cobalt 60 half-lives
1 July 1995 5,844 16 Earth years
5 September 1995 5,910 10 Golden ratio years
21 October 1995 5,956 6 e years
4 December 1995 6,000 6,000 days
9 May 1996 6,157 70 Mercury years
26 May 1996 6,174 Kaprekar's-constant days
4 June 1996 6,183 9 Mars years
19 June 1996 6,198 12 Root-2 years
1 July 1996 6,210 17 Earth years
10 August 1996 6,250 9,000,000 minutes
25 December 1996 6,387 1,000 Pluto days
18 April 1997 6,501 11 Golden ratio years
1 July 1997 6,575 18 Earth years
30 September 1997 6,666 6666 days
17 November 1997 6,714 13 Root-2 years
14 December 1997 6,741 30 Venus years
7 January 1998 6,765 20th Fibonacci number days
22 April 1998 6,870 10 Mars years
7 May 1998 6,885 6 Pi years
23 June 1998 6,932 20 Draconic years
1 July 1998 6,940 19 Earth years
5 July 1998 6,944 10,000,000 minutes
10 July 1998 6,949 7 e years
30 August 1998 7,000 7,000 days
6 October 1998 7,037 80 Mercury years
30 November 1998 7,092 12 Golden ratio years
17 April 1999 7,230 14 Root-2 years
1 July 1999 7,305 20 Earth years
9 March 2000 7,557 11 Mars years
30 May 2000 7,639 11,000,000 minutes
1 July 2000 7,671 21 Earth years
13 July 2000 7,683 13 Golden ratio years
30 July 2000 7,700 4 Cobalt 60 half-lives
15 September 2000 7,747 15 Root-2 years
15 October 2000 7,777 7777 days
3 March 2001 7,916 90 Mercury years
29 March 2001 7,942 8 e years
26 May 2001 8,000 8,000 days
27 June 2001 8,032 7 Pi years
1 July 2001 8,036 22 Earth years
1 October 2001 8,128 4th even-perfect-number days
2 December 2001 8,190 300 lunar orbits
17 January 2002 8,236 20 Full moon cycles
25 January 2002 8,244 12 Mars years
13 February 2002 8,263 16 Root-2 years
24 February 2002 8,274 14 Golden ratio years
24 April 2002 8,333 12,000,000 minutes
24 April 2002 8,333 200,000 hours
1 July 2002 8,401 23 Earth years
23 February 2003 8,638 1234 weeks
22 March 2003 8,665 2 Jupiter years
1 July 2003 8,766 24 Earth years
15 July 2003 8,780 17 Root-2 years
31 July 2003 8,796 100 Mercury years
8 October 2003 8,865 15 Golden ratio years
31 October 2003 8,888 8888 days
13 December 2003 8,931 13 Mars years
17 December 2003 8,935 9 e years
8 February 2004 8,988 40 Venus years
20 February 2004 9,000 9,000 days
24 February 2004 9,004 2 Hydrogen 3 (Tritium) half-lives
19 March 2004 9,028 13,000,000 minutes
1 July 2004 9,132 25 Earth years
17 August 2004 9,179 8 Pi years
12 December 2004 9,296 18 Root-2 years
21 May 2005 9,456 16 Golden ratio years
1 July 2005 9,497 26 Earth years
2 September 2005 9,560 2 Californium 250 half-lives
30 October 2005 9,618 14 Mars years
6 November 2005 9,625 5 Cobalt 60 half-lives
27 December 2005 9,676 110 Mercury years
11 February 2006 9,722 14,000,000 minutes
13 May 2006 9,813 19 Root-2 years
1 July 2006 9,862 27 Earth years
4 September 2006 9,927 10 e years
15 November 2006 9,999 9999 days
16 November 2006 10,000 10,000 days
2 January 2007 10,047 17 Golden ratio years
1 July 2007 10,227 28 Earth years
17 September 2007 10,305 15 Mars years
9 October 2007 10,327 9 Pi years
11 October 2007 10,329 20 Root-2 years
20 December 2007 10,399 30 Draconic years
7 January 2008 10,417 15,000,000 minutes
24 May 2008 10,555 120 Mercury years
1 July 2008 10,593 29 Earth years
15 August 2008 10,638 18 Golden ratio years
25 August 2008 10,648 1 Curium 243 half-lives
25 February 2009 10,832 1 Saturn year
11 March 2009 10,846 21 Root-2 years
24 May 2009 10,920 400 lunar orbits
24 May 2009 10,920 11 e years
19 June 2009 10,946 21st Fibonacci number days
1 July 2009 10,958 30 Earth years
4 August 2009 10,992 16 Mars years
12 August 2009 11,000 11,000 days
1 December 2009 11,111 11111 days
1 December 2009 11,111 16,000,000 minutes
29 March 2010 11,229 19 Golden ratio years
4 April 2010 11,235 50 Venus years
1 July 2010 11,323 31 Earth years
9 August 2010 11,362 22 Root-2 years
21 October 2010 11,435 130 Mercury years
29 November 2010 11,474 10 Pi years
13 February 2011 11,550 6 Cobalt 60 half-lives
9 March 2011 11,574 1 gigasecond
22 June 2011 11,679 17 Mars years
1 July 2011 11,688 32 Earth years
26 October 2011 11,805 17,000,000 minutes
9 November 2011 11,819 20 Golden ratio years
8 January 2012 11,879 23 Root-2 years
11 February 2012 11,913 12 e years
8 May 2012 12,000 12,000 days
1 July 2012 12,054 33 Earth years
18 March 2013 12,314 140 Mercury years
18 April 2013 12,345 12345 days
26 April 2013 12,353 30 Full moon cycles
9 May 2013 12,366 18 Mars years
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