First Quarter Moon
Sunday, 10 May 1981 · 23:22 local in London
1981-05-10 22:22 UTC · Europe/London
First Quarter Moon occurs at 23:22 local time in London on 10 May. 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
10 May
1981
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 (30°) 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 23:22 local · NASA LRO surface
Next moonrise
12:30
Next moonset
02:46