First Quarter Moon
Friday, 21 May 2010 · 00:43 local in London
2010-05-20 23:43 UTC · Europe/London
First Quarter Moon occurs at 00:43 local time in London on 21 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
9°
At the exact phase
Illumination
50%
First Quarter
Local date
21 May
2010
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 (9°) 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 00:43 local · orientation schematic
Next moonrise
13:09
Next moonset
01:49
Next events
Calendar →May 2010
28
Full Moon
Above horizon00:07 local · Fri, Fri 28 May · Moon 13°
Jun 2010
4
Last Quarter Moon
Below horizon23:13 local · Fri, Fri 4 Jun · Moon -18°
Jun 2010
12
New Moon
Not visible12:15 local · Sat, Sat 12 Jun · Moon 62°
Jun 2010
19
First Quarter Moon
Below horizon05:30 local · Sat, Sat 19 Jun · Moon -40°