First Quarter Moon
Thursday, 21 August 2121 · 11:28 local in London
2121-08-21 10:28 UTC · Europe/London
First Quarter Moon occurs at 11:28 local time in London on 21 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
-30°
At the exact phase
Illumination
50%
First Quarter
Local date
21 Aug
2121
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 11:28 local · NASA LRO surface
Next moonrise
15:09
Next moonset
22:42
Next events
Calendar →Aug 2121
28
Full Moon
Below horizon09:42 local · Thu, Thu 28 Aug · Moon -30°
Sept 2121
4
Last Quarter Moon
Above horizon00:38 local · Thu, Thu 4 Sept · Moon 18°
Sept 2121
11
New Moon
Not visible23:38 local · Thu, Thu 11 Sept · Moon -36°
Sept 2121
20
First Quarter Moon
Below horizon00:25 local · Sat, Sat 20 Sept · Moon -16°