First Quarter Moon
Wednesday, 20 September 1939 · 11:34 local in London
1939-09-20 10:34 UTC · Europe/London
First Quarter Moon occurs at 11:34 local time in London on 20 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
-27°
At the exact phase
Illumination
50%
First Quarter
Local date
20 Sep
1939
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 11:34 local · NASA LRO surface
Next moonrise
14:42
Next moonset
23:34
Next events
Calendar →Sept 1939
28
Full Moon
Below horizon15:27 local · Thu, Thu 28 Sept · Moon -25°
Oct 1939
6
Last Quarter Moon
Above horizon06:28 local · Fri, Fri 6 Oct · Moon 55°
Oct 1939
12
New Moon
Not visible21:30 local · Thu, Thu 12 Oct · Moon -32°
Oct 1939
20
First Quarter Moon
Below horizon04:24 local · Fri, Fri 20 Oct · Moon -44°