First Quarter Moon
Monday, 13 September 2021 · 21:39 local in London
2021-09-13 20:39 UTC · Europe/London
First Quarter Moon occurs at 21:39 local time in London on 13 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
4°
At the exact phase
Illumination
50%
First Quarter
Local date
13 Sep
2021
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 (4°) 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 21:39 local · orientation schematic
Next moonrise
16:05
Next moonset
22:29
Next events
Calendar →Sept 2021
21
Full Moon
Above horizon00:55 local · Tue, Tue 21 Sept · Moon 33°
Sept 2021
29
Last Quarter Moon
Above horizon02:57 local · Wed, Wed 29 Sept · Moon 38°
Oct 2021
6
New Moon
Not visible12:05 local · Wed, Wed 6 Oct · Moon 35°
Oct 2021
13
First Quarter Moon
Below horizon04:25 local · Wed, Wed 13 Oct · Moon -51°