Final answer:
To measure latitude, one needs to measure angles in the sky and maintain accurate timekeeping for precise celestial navigation.
Step-by-step explanation:
To measure latitude, one primarily needs a way to measure angles in the sky, which pertains to celestial coordinates such as declination and right ascension. Celestial navigation also often involves accurate timekeeping because it helps in determining the exact position of celestial bodies at given times. Although measuring the exact distance to the Moon is not necessary for determining latitude, the knowledge of lunar distances has historically played a role in celestial measurements and navigation. For instance, Ptolemy was able to estimate the distance to the Moon using the Earth's rotation as a baseline, which facilitated his calculations for the Moon's position relative to the stars.