The story behind this piece
Thirty moons from one real lunation, from the new moon of 14 July 1969 to the eve of the next. Each is drawn at 20:17 UTC, the minute Apollo 11's Eagle touched down in the Sea of Tranquillity; on day six the landing site sits just inside the morning terminator, marked in red. Positions come from Meeus's lunar theory, good to a few minutes. The lit fraction is k = (1 − cos φ)/2, and each terminator is the true ellipse. The moons are drawn north up, as seen from the northern hemisphere: from Accra, 5.6° N, the waxing light is on the right. Near the equator the evening crescent lies almost on its back, a bright bowl.
