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26 August

City Star Party: Bayview Village Park - August 2025 (GO for Tuesday)

Our monthly City Star Party is the place to catch universe from within the city limits at Bayview Village Park. If you don't have a telescope then you will find many astronomers who would love to share a view.
28 August

2025 Annual Algonquin Adventure stargazing night with Royal Astronomical of Society of Canada

Join members of the Royal Astronomical Society of Canada (Toronto Centre) on Aug 28, 29 and 30, beginning at 8:00pm for a night of stargazing, on the Mew Lake beach.
29 August

Millennium Square Public Star Party - August 29 or 30, 2025

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.
31 August

DDO: Sunday Sungazing - August 2025

Safely observe the sun with us! During these family-friendly sessions, a DDO Astronomer will answer your questions about our closest star: the sun!
3 September

Recreational Astronomy Night - September 3, 2025

Join us for our monthly recreational astronomy night meeting. This is where our members get to show their latest projects or give tutorials and tips on just about everything to do with astronomy.
6 September

Millennium Square Solar Observing - September 2025

Come join us along the Lake Ontario shoreline to safely observe exciting sunspot activity and solar prominences through our solar telescopes! The Sun has been very active lately, producing auroras over Canada and around the world.
13 September

DDO Astronomy Family Night - September 2025 - Who Really Discovered Neptune?

Families will be introduced to the wonders of astronomy through a presentation on a variety of exciting astronomy topics, followed by age-appropriate celestial activities!
17 September

RASCTO Speaker's Night: Supernova Forensic Files [Online Only]

Join us with Dr. Jennifer Andrews, Associate Astronomer at NOIRLab/Gemini-N, as we explore massive stars, stars at least 8-10 times larger than our Sun, end their lives in some of the brightest explosions in the Universe.
20 September

DDO Spectacular Saturn - The Ringed Planet at Opposition 2025

Join us for the wonders of astronomy through a presentation on the ring planet Saturn, followed by an age-appropriate celestial activities and a demonstration of the 74” telescope.
26 September

Millennium Square Public Star Party - September 26 or 27, 2025

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.
29 September

City Star Party: Bayview Village Park - September 2025

Our monthly City Star Party is the place to catch universe from within the city limits at Bayview Village Park. If you don't have a telescope then you will find many astronomers who would love to share a view.
1 October

Recreational Astronomy Night - October 1, 2025

Join us for our monthly recreational astronomy night meeting. This is where our members get to show their latest projects or give tutorials and tips on just about everything to do with astronomy.