Seattle Astronomical Society is a nonprofit organization dedicated to promoting all aspects of amateur astronomy for the benefit of its members and the general public.

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Current Sky Conditions

Clear skies are an essential ingredient for successful skywatching. Get a closer look at a clear sky chart or more general weather conditions.

  • Seattle Sunrise
  • Official at 07:29 AM
  • Civil at 06:55 AM
  • Nautical at 06:17 AM
  • Astronomical at 05:40 AM
  • Seattle Sunset
  • Official at 04:22 PM
  • Civil at 04:57 PM
  • Nautical at 05:35 PM
  • Astronomical at 06:12 PM
  • Lunar Phase
  • Sky Conditions
  • Seattle
  • Rattlesnake Mountain Trailhead
Join SAS

Join SAS!

SAS invites all to participate in popular SAS public events and to think about the benefits of becoming a member of SAS. All astronomy enthusiasts are welcome.


Recent Observing Awards

Binocular Messier Observing Program

The Binocular Messier Observing Program is for beginning observers as well as experienced amateurs. Beginning observers will find that it doesn't take an expensive telescope but only a simple pair ...

9 awarded

Jonathan Jonathan


Awarded on Jul 02, 2022 — 5 months

Multiple Star Observing

The purpose of the Multiple Star Observing Program is to introduce Astronomical League observers to 114 of some of the finest multiple star systems. This program is to be conducted after ...

1 awarded

Jonathan Jonathan


Awarded on Feb 07, 2022 — 10 months

Comet Observing Program

In observing the wonders of the universe, there are perhaps no more wondrous and beautiful objects than comets. Since the invention of the telescope hundreds of years ago, astronomers have ...

5 awarded

Yu-Hang Kuo Yu-Hang Kuo

gold (56)

Awarded on Dec 20, 2021 — 11 months