First Quarter Moon
Monday, 17 September 1923 · 12:04 local in London
1923-09-17 12:04 UTC · Europe/London
First Quarter Moon occurs at 12:04 local time in London on 17 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
-13°
At the exact phase
Illumination
50%
First Quarter
Local date
17 Sep
1923
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 12:04 local · NASA LRO surface
Next moonrise
13:34
Next moonset
22:35
Next events
Calendar →Sept 1923
25
Full Moon
Above horizon01:16 local · Tue, Tue 25 Sept · Moon 34°
Oct 1923
3
Last Quarter Moon
Above horizon05:29 local · Wed, Wed 3 Oct · Moon 56°
Oct 1923
10
New Moon
Not visible06:05 local · Wed, Wed 10 Oct · Moon -1°
Oct 1923
16
First Quarter Moon
Above horizon20:54 local · Tue, Tue 16 Oct · Moon 10°