Question 1

What phase is the Moon in New York on January 4, 2024?

Accepted Answer

The Moon is Waning Crescent, 35% illuminated, on lunar day 23. It rises at 01:15 and sets at 12:08.

Question 2

What does 35% illumination mean?

Accepted Answer

The share of the Moon's visible disc that is lit by the Sun. 0% is new moon and 100% is full moon. Illumination changes fastest near the quarters and slowest near new and full moon.

Question 3

When can the Moon be seen on January 4, 2024?

Accepted Answer

The Moon is above the horizon for about 10h 53m, from 01:15 to 12:08, reaching at 37° at culmination.

Question 4

How accurate is this moon data?

Accepted Answer

Phase, illumination and moon events are computed from astronomical ephemerides for the city's coordinates and timezone. Moonrise and moonset also depend on the local horizon and elevation.

Moon phase for January 4, 2024

Waning Crescent

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