New Moon phase angle
- Input
- 0°
- Expected output
- 0% iluminado
Sun and Moon in the same direction as seen from Earth.
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what does new moon mean
The New Moon happens when the Moon sits between Earth and the Sun (roughly, without forming a solar eclipse), so the lunar hemisphere facing us is the one in shadow. The phase angle is 0 degrees and the Moon practically disappears from the night sky for a few days.
Sun and Moon in the same direction as seen from Earth.
No moonlight competing with faint stars.
It's the Moon's visual shape at that moment (how much of the Sun-lit disc we can see from Earth), classified into one of 8 traditional names (New, Crescent, First Quarter, Gibbous, Full, and so on) based on the angle between the Sun and the Moon in the sky.
Because the side of the Moon facing Earth is in shadow at that moment (0 percent lit), and on top of that the Moon sits close to the Sun in the sky, so it is lost in the daytime glare.
No. Every solar eclipse happens at a New Moon, but most New Moons do not cause an eclipse, because the Moon's tilted orbit usually makes it pass above or below the exact line between Earth and the Sun.
The exact date and time change every month; the tool below already opens with the next New Moon computed in real time in your time zone.
Use the arrow keys to move between days, Page Up or Page Down to change month.
The markers show the exact New Moon and Full Moon within the displayed month.
All Moon phase calculations run locally in your browser, no date is ever sent to a server.