News Timmins helps to celebrate National Aboriginal Day with events at Participark SHARE ON: Taylor Ablett, staff Tuesday, Jun. 21st, 2016 Photo: Ontario Regional Chief Isadore Day. Supplied. Today marks National Aboriginal Day, which celebrates a new season, and the cultures and contributions of First Nation, Inuit, and Metis people. The Timmins Aboriginal Organizations Committee is hosting events all day today at the Participark to celebrate the day. There will be a traditional drumming, a sunrise ceremony, and a BBQ. A full schedule is below. National Aboriginal Day schedule at Participark.