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 05:17 AM
  • Civil at 04:38 AM
  • Nautical at 03:46 AM
  • Astronomical at 02:34 AM
  • Seattle Sunset
  • Official at 08:56 PM
  • Civil at 09:35 PM
  • Nautical at 10:27 PM
  • Astronomical at 11:40 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

Open Cluster Observing Program

Important Notice: The Open Cluster Observing Program now allows imaging as an option for completion for the award. Remote telescopes are permitted in this Observing Program. Open clusters are ...

2 awarded

Jonathan Jonathan

advanced (117)

Awarded on Feb 24, 2023 — 3 months

Planetary Nebula Observing Program

Welcome to the Astronomical League's Planetary Nebula Observing Program! Planetary Nebulae are perhaps the most interesting and beautiful objects in the heavens. A genre full of wonderful ...

3 awarded

Jonathan Jonathan

advanced (102-M)

Awarded on Dec 04, 2022 — 6 months

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 — 11 months