First Quarter Moon
Saturday, 21 September 1901 · 01:33 local in London
1901-09-21 01:33 UTC · Europe/London
First Quarter Moon occurs at 01:33 local time in London on 21 September. 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
-32°
At the exact phase
Illumination
50%
First Quarter
Local date
21 Sep
1901
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 01:33 local · NASA LRO surface
Next moonrise
14:03
Next moonset
22:51
Next events
Calendar →Sept 1901
28
Full Moon
Above horizon05:36 local · Sat, Sat 28 Sept · Moon 4°
Oct 1901
4
Last Quarter Moon
Below horizon20:52 local · Fri, Fri 4 Oct · Moon -10°
Oct 1901
12
New Moon
Not visible13:11 local · Sat, Sat 12 Oct · Moon 25°
Oct 1901
20
First Quarter Moon
Above horizon17:58 local · Sun, Sun 20 Oct · Moon 22°