· 20:17 UTC (documented minute)
The lunar module Eagle landed in the Sea of Tranquility, bringing humans to the surface of another world for the first time. The landing is distinct from the first moonwalk, which began on 21 July in UTC.
19 Jun 2028 · approximate
See it in the timeline ↓A curated selection of 22 mathematical, lunar and symbolic planetary milestones. Future dates are planning estimates, not historical observations.
100,000,000 elapsed seconds from your chosen moment.
100,000,000 elapsed seconds from your chosen moment. Based on your selected local time, to the minute; leap seconds are not included.
The 100th astronomical full moon strictly after your starting moment.
The 100th astronomical full moon strictly after your starting moment. Calculated from the Sun–Moon phase geometry using Meeus’s true-phase algorithm.
A symbolic anniversary measured in Jupiter’s longer years.
Approximately 1 mean sidereal orbital period of Jupiter (4,332.589 Earth days each). A symbolic anniversary, not an exact planetary return.
A symbolic anniversary measured in Mars’s longer years.
Approximately 10 mean sidereal orbital periods of Mars (686.98 Earth days each). A symbolic anniversary, not an exact planetary return.
A 1,000-week anniversary in UTC.
A 1,000-week anniversary in UTC.
A rare repeating-digit day count.
A rare repeating-digit day count. An ordinary day with an extraordinary number.
A 10,000-day anniversary in UTC.
A 10,000-day anniversary in UTC.
A symbolic anniversary measured in Saturn’s longer years.
Approximately 1 mean sidereal orbital period of Saturn (10,759.22 Earth days each). A symbolic anniversary, not an exact planetary return.
1,000,000,000 elapsed seconds from your chosen moment.
1,000,000,000 elapsed seconds from your chosen moment. Based on your selected local time, to the minute; leap seconds are not included.
A beautifully ordered day count.
A beautifully ordered day count. An ordinary day with an extraordinary number.
The 500th astronomical full moon strictly after your starting moment.
The 500th astronomical full moon strictly after your starting moment. Calculated from the Sun–Moon phase geometry using Meeus’s true-phase algorithm.
A calendar-month anniversary.
A calendar-month anniversary. Shorter months use their last day.
An approximate trip-count based on Earth’s orbit, not a civil-calendar birthday.
Approximately 50 mean sidereal orbital periods of Earth (365.256 Earth days each). A symbolic anniversary, not an exact planetary return.
A 20,000-day anniversary in UTC.
A 20,000-day anniversary in UTC.
A symbolic anniversary measured in Saturn’s longer years.
Approximately 2 mean sidereal orbital periods of Saturn (10,759.22 Earth days each). A symbolic anniversary, not an exact planetary return.
A symbolic anniversary measured in Jupiter’s longer years.
Approximately 5 mean sidereal orbital periods of Jupiter (4,332.589 Earth days each). A symbolic anniversary, not an exact planetary return.
A rare repeating-digit day count.
A rare repeating-digit day count. An ordinary day with an extraordinary number.
The 1,000th astronomical full moon strictly after your starting moment.
The 1,000th astronomical full moon strictly after your starting moment. Calculated from the Sun–Moon phase geometry using Meeus’s true-phase algorithm.
A calendar-month anniversary.
A calendar-month anniversary. Shorter months use their last day.
A rare repeating-digit day count.
A rare repeating-digit day count. An ordinary day with an extraordinary number.
An approximate trip-count based on Earth’s orbit, not a civil-calendar birthday.
Approximately 100 mean sidereal orbital periods of Earth (365.256 Earth days each). A symbolic anniversary, not an exact planetary return.
A 50,000-day anniversary in UTC.
A 50,000-day anniversary in UTC.
Sources for the original date and historical context. The unusual anniversaries above are calculated by Starry Moments, not attributed to these sources.
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