Question 1

What phase is the Moon in New York on February 4, 2030?

Accepted Answer

The Moon is First Quarter, 10% illuminated, on lunar day 3. It rises at 08:10 and sets at 20:50.

Question 2

What does 10% 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 February 4, 2030?

Accepted Answer

The Moon is above the horizon for about 12h 40m, from 08:10 to 20:50, reaching at 52° 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 February 4, 2030

First Quarter

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