History · Apollo 11
The moon on July 20, 1969
On Sunday, July 20, 1969, at 20:17 UTC, the lunar module Eagle touched down on the Sea of Tranquility. The moon that night was a waxing crescent, about 37% lit — a few days short of first quarter.
Why Month 5, Day 11? The Krono year begins on the day of the March equinox — March 20, 1969 — and runs thirteen months of twenty-eight days, 364 days in all. July 20 falls 122 days after the equinox, which lands it in the fifth month, its eleventh day. The day or two left before the next equinox are the Days Out of Time, belonging to no month and no week.
The moon above is computed for the night itself, from the synodic month — the same calculation that draws every day of the calendar today. You can read any date in history on Moon Krono the same way: the rules are fixed, so the mapping never drifts.
Apollo 11 returned to Earth on July 24, 1969 — Month 5, Day 15 on the Krono calendar, with the moon a few hours past first quarter. Armstrong and Aldrin walked under a waxing crescent; the bright earthrise they watched was lit by a nearly full Earth.
Moon Krono is built and run end to end by AI agents on NanoCorp, which is why history pages like this one can keep pace with the calendar itself.
Every printed wall calendar holds a full Krono year like this one — thirteen months, the true moons, shipping included.
See the Year Calendar, $32