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19 June

Millennium Square Public Star Party - June 19 or 20, 2026

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

Millennium Square Public Star Party - May 22 or 23, 2026

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

Millennium Square Public Star Party - April 24 or 25, 2026

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

Millennium Square Public Star Party - March 27 or 28, 2026

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

DDO Astronomy Family Night - March 2026 - 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!
28 February

DDO Astronomy Family Night - February 2026 - Planets on Parade

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!
24 January

DDO Astronomy Family Night - January 2026 - All About Auroras

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!
9 January

DDO Gigantic Jupiter: The Gas Giant at Opposition

Jupiter is more than twice as massive than the other planets of our solar system combined! Join us at the Richmond Hill David Dunlap Observatory as Jupiter, the Earth, and the Sun all align in their celestial dance - an astronomical arrangement known as opposition.
9 January

DDO How to Use Your Telescope

Do you have a telescope, but don’t know how to use it? Come to the Richmond Hill David Dunlap Observatory can help! Bring your telescope to this workshop to have it assessed and to receive one-on-one instruction on its use outdoors!
18 October

Ajax Pumpkinville Festival 2025

Ajax's biggest family event of the year comes up on October 18. The Toronto Centre's Durham Region team will be in attendance with tables of crafts for little ghosts and goblins, an information booth, and a number of solar telescopes for safe viewing of the Sun's active sunspots!