First Quarter Moon
Saturday, 10 August 1940 · 13:00 local in London
1940-08-10 12:00 UTC · Europe/London
First Quarter Moon occurs at 13:00 local time in London on 10 August. 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
-10°
At the exact phase
Illumination
50%
First Quarter
Local date
10 Aug
1940
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 13:00 local · NASA LRO surface
Next moonrise
14:08
Next moonset
23:50
Next events
Calendar →Aug 1940
18
Full Moon
Above horizon00:03 local · Sun, Sun 18 Aug · Moon 27°
Aug 1940
26
Last Quarter Moon
Above horizon04:33 local · Mon, Mon 26 Aug · Moon 45°
Sept 1940
2
New Moon
Not visible05:15 local · Mon, Mon 2 Sept · Moon -11°
Sept 1940
8
First Quarter Moon
Above horizon20:32 local · Sun, Sun 8 Sept · Moon 16°