First Quarter Moon
Saturday, 17 August 1991 · 06:01 local in London
1991-08-17 05:01 UTC · Europe/London
First Quarter Moon occurs at 06:01 local time in London on 17 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
-61°
At the exact phase
Illumination
50%
First Quarter
Local date
17 Aug
1991
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 06:01 local · NASA LRO surface
Next moonrise
15:14
Next moonset
22:56
Next events
Calendar →Aug 1991
25
Full Moon
Below horizon10:07 local · Sun, Sun 25 Aug · Moon -34°
Sept 1991
1
Last Quarter Moon
Below horizon19:16 local · Sun, Sun 1 Sept · Moon -14°
Sept 1991
8
New Moon
Not visible12:01 local · Sun, Sun 8 Sept · Moon 38°
Sept 1991
15
First Quarter Moon
Below horizon23:02 local · Sun, Sun 15 Sept · Moon -5°