First Quarter Moon
Wednesday, 13 August 2138 · 23:21 local in London
2138-08-13 22:21 UTC · Europe/London
First Quarter Moon occurs at 23:21 local time in London on 13 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
-7°
At the exact phase
Illumination
50%
First Quarter
Local date
13 Aug
2138
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 23:21 local · NASA LRO surface
Next moonrise
15:42
Next moonset
22:58
Next events
Calendar →Aug 2138
20
Full Moon
Below horizon16:37 local · Wed, Wed 20 Aug · Moon -32°
Aug 2138
27
Last Quarter Moon
Above horizon11:06 local · Wed, Wed 27 Aug · Moon 34°
Sept 2138
4
New Moon
Not visible13:57 local · Thu, Thu 4 Sept · Moon 42°
Sept 2138
12
First Quarter Moon
Below horizon09:22 local · Fri, Fri 12 Sept · Moon -53°