Question 1

What phase is the Moon in New York on January 18, 2029?

Accepted Answer

The Moon is First Quarter, 22% illuminated, on lunar day 5. It rises at 09:24 and sets at 22:10.

Question 2

What does 22% 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 18, 2029?

Accepted Answer

The Moon is above the horizon for about 12h 47m, from 09:24 to 22:10, reaching at 53° 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 18, 2029

First Quarter

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