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    Articles > October 2021
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Guide to the Night Sky 2021
2021 Guide to the Night Sky

A monthly guide to the night sky in 2021 with star charts, sky calendar, planet data, moon phases, and meteor showers.
More info | Buy now


All sky watchers need a planisphere to quickly show the location of stars and constellations for any date and time. Note: Planispheres are designed for specific latitudes so be sure to select one for your latitude.

Guide to the Stars

(5th Edition, Jan. 2013)
A very large 16-inch diameter information-rich planisphere (plastic) for use anywhere between latitude 30° & 60° North. Also available in a Southern Hemisphere edition.
More info | Buy now

200+ Customer Reviews

More Planispheres

The Night Sky Planisphere

A very popular 8-inch diameter, two-sided planisphere (plastic) designed to depict the night sky with less distortion than regular planispheres. Available for several latitudes, and in a smaller 5-inch edition.
More info | Buy now
• Only $11.95 •

150+ Customer Reviews

Night Sky Editions
Latitude 20° to 30° North
Latitude 30° to 40° North
Latitude 40° to 50° North
Latitude 50° to 60° North
Southern Hemisphere
(more info)

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  Sky Calendar -- October 2021
1 Moon near Beehive cluster M44 at 16h UT (morning sky).
Beehive Cluster (Wikipedia)
M44: The Beehive Cluster (APOD)
2 Mercury 1.5° SSW of Spica at 10h UT (15° from Sun, evening sky). Mags. 1.9 and 1.0.
Mercury (Wikipedia)
Spica (Wikipedia)
3 Moon near Regulus at 10h UT (morning sky).
Regulus (Wikipedia)
6 New Moon at 11:05 UT. Start of lunation 1222.
8 Moon at perigee (closest to Earth) at 17:28 UT (distance 363,386 km; angular size 32.9').
9 Mercury at inferior conjunction with the Sun at 16h UT. Mercury passes into the morning sky.
9 Moon near Venus at 21h UT (evening sky). Mag. −4.2.
Venus (Wikipedia)
10 Moon near Antares at 9h UT (evening sky).
Antares (Wikipedia)
13 First Quarter Moon at 3:26 UT.
14 Moon near Saturn at 9h UT (evening sky). Mag. 0.5.
Saturn (Wikipedia)
15 Moon near Jupiter at 13h UT (evening sky). Mag. −2.6.
Jupiter (Wikipedia)
16 Venus 1.4° NNE of Antares at 21h UT (47° from Sun, evening sky). Mags. −4.3 and 1.0.
20 Full Moon at 14:56 UT.
21 Orionid meteor shower peaks at 5h UT. Arises from the debris field of Comet Halley. Active from October 2 to November 7. Produces very fast (67 km/sec), generally faint meteors (20 per hour). Radiant located near Orion's club asterism. Visibility is reduced due to bright moonlight this year.
Meteor Shower Calendar (IMO)
23 Moon near the Pleiades at 10h UT (morning sky).
The Pleiades (Wikipedia)
24 Moon near Aldebaran at 4h UT (morning sky).
Aldebaran (Wikipedia)
24 Moon at apogee (farthest from Earth) at 15h UT (distance 405,615 km; angular size 29.5').
25 Mercury at greatest elongation west at 5h UT (18° from Sun, morning sky). Mag. −0.5.
27 Moon near Castor at 16h UT (morning sky).
27 Moon near Pollux at 21h UT (morning sky).
28 Venus at dichotomy (D-shape phase) at 14h UT (evening sky).
Drawings of Venus at Dichotomy (BAA)
28 Last Quarter Moon at 20:06 UT.
29 Moon near Beehive cluster M44 at 0h UT (morning sky).
29 Venus at greatest elongation east at 21h UT (47° from Sun, evening sky). Mag. −4.4.
30 Moon near Regulus at 19h UT (morning sky).
All times Universal Time (UT).
  • US Eastern Daylight Time = UT − 4 hours.
  • US Pacific Daylight Time = UT − 7 hours.
  • Australian Eastern Daylight Time = UT + 11 hours
  • Singapore Standard Time = UT + 8 hours.

Clear skies till next month!

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