First Quarter Moon
Monday, 17 May 2100 · 03:42 local in London
2100-05-17 02:42 UTC · Europe/London
First Quarter Moon occurs at 03:42 local time in London on 17 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
-10°
At the exact phase
Illumination
50%
First Quarter
Local date
17 May
2100
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 03:42 local · NASA LRO surface
Next moonrise
12:33
Next moonset
02:43
Next events
Calendar →May 2100
23
Full Moon
Below horizon18:25 local · Sun, Sun 23 May · Moon -24°
May 2100
30
Last Quarter Moon
Below horizon20:35 local · Sun, Sun 30 May · Moon -44°
Jun 2100
8
New Moon
Not visible00:32 local · Tue, Tue 8 Jun · Moon -11°
Jun 2100
15
First Quarter Moon
Below horizon10:41 local · Tue, Tue 15 Jun · Moon -21°