Full Moon
Saturday, 21 May 1921 · 21:15 local in London
1921-05-21 20:15 UTC · Europe/London
Full Moon occurs at 21:15 local time in London on 21 May. The Moon is opposite the Sun and fully illuminated. It is easy to see all night, but surface contrast is lowest because sunlight is nearly head-on.
Moon altitude
5°
At the exact phase
Illumination
100%
Full Moon
Local date
21 May
1921
Viewing tips
- No dark adaptation is needed — the Moon is bright.
- Use a moon filter if the glare is uncomfortable through a telescope.
- Look for bright ray systems such as Tycho and Copernicus.
Visibility, honestly
Above the horizon (5°) 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
Full Moon · 100% lit
Phase at 21:15 local · NASA LRO surface
Next moonrise
21:30
Next moonset
05:39
Next events
Calendar →May 1921
29
Last Quarter Moon
Below horizon22:44 local · Sun, Sun 29 May · Moon -26°
Jun 1921
6
New Moon
Not visible07:14 local · Mon, Mon 6 Jun · Moon 16°
Jun 1921
12
First Quarter Moon
Above horizon21:59 local · Sun, Sun 12 Jun · Moon 26°
Jun 1921
20
Full Moon
Below horizon10:41 local · Mon, Mon 20 Jun · Moon -48°