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30 May

Millennium Square Public Star Party - May 30 or 31, 2025

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

David Dunlap Observatory 90th Anniversary Star Party

Free,self-guided tours of the DDO resume 1-5 PM on May 31st, the 90th anniversary of the RHDDO!
31 May

City Star Party: Long Branch Park - MOON IN JUNE - May 31st or June 1st 2025 and June 7th or June 8th 2025

We are piloting a new City Star Party at Long Branch Park to catch universe from within the city limits. If you don't have a telescope then you will find many astronomers who would love to share a view.
2 June

City Star Party: Bayview Village Park - June 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.
4 June

Recreational Astronomy Night - June 4, 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.
7 June

DDO Astronomy Speaker's Night - Seeing Double (Stars) - June 2025

Experience a presentation led by astronomy experts and researchers and tour the observatory.
14 June

DDO Astronomy Family Night - June 2025 - Constellations: Connecting the Dots

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!
29 June

DDO: Sunday Sungazing - June 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!
2 July

Recreational Astronomy Night - July 2, 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.
4 July

Millennium Square Public Star Party - July 4 or 5, 2025

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

City Star Party: Bayview Village Park - July 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 August

Millennium Square Public Star Party - August 1 or 2, 2025

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