First Quarter Moon
Sunday, 18 October 1931 · 09:20 local in London
1931-10-18 09:20 UTC · Europe/London
First Quarter Moon occurs at 09:20 local time in London on 18 October. 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
-46°
At the exact phase
Illumination
50%
First Quarter
Local date
18 Oct
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
Below the horizon at the exact moment — look near moonrise or moonset.
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 09:20 local · NASA LRO surface
Next moonrise
14:45
Next moonset
22:09
Next events
Calendar →Oct 1931
26
Full Moon
Below horizon13:34 local · Mon, Mon 26 Oct · Moon -20°
Nov 1931
3
Last Quarter Moon
Above horizon07:18 local · Tue, Tue 3 Nov · Moon 57°
Nov 1931
9
New Moon
Not visible22:55 local · Mon, Mon 9 Nov · Moon -58°
Nov 1931
17
First Quarter Moon
Below horizon02:14 local · Tue, Tue 17 Nov · Moon -33°