First Quarter Moon
Friday, 18 September 1931 · 21:37 local in London
1931-09-18 20:37 UTC · Europe/London
First Quarter Moon occurs at 21:37 local time in London on 18 September. Half of the visible disc is lit, and the terminator cuts across the middle. Long shadows make craters along the dividing line stand out.
Moon altitude
1°
At the exact phase
Illumination
50%
First Quarter
Local date
18 Sep
1931
Viewing tips
- Look along the terminator for the strongest crater shadows.
- The Moon is highest in the evening during this phase.
- Binoculars are enough to see major craters and maria.
Visibility, honestly
Above the horizon (1°) at the exact moment.
A phase is a global instant; whether it is above your horizon depends on location. Weather is not included here. Check the tonight outlook for cloud cover and a viewing score. No eclipse or conjunction claim is made on this page.
Phase times from Astronomy Engine. Rise/set and altitude use atmospheric refraction. Method
First Quarter · 50% lit
Phase at 21:37 local · NASA LRO surface
Next moonrise
16:28
Next moonset
21:57
Next events
Calendar →Sept 1931
26
Full Moon
Above horizon20:45 local · Sat, Sat 26 Sept · Moon 17°
Oct 1931
4
Last Quarter Moon
Below horizon20:15 local · Sun, Sun 4 Oct · Moon -5°
Oct 1931
11
New Moon
Not visible13:06 local · Sun, Sun 11 Oct · Moon 27°
Oct 1931
18
First Quarter Moon
Below horizon09:20 local · Sun, Sun 18 Oct · Moon -46°