June 1866

Sunday 03:

Fenians are driven out of Fort Erie, Ontario, into the United States to a heroes' welcome.

Tuesday 05:

Calculations indicate Pluto reached its most recent aphelion (furthest point from Sun) on this day. The next aphelion will occur in August 2113.

Thursday 07:

1800 Fenian raiders are repelled back to the United States after they loot and plunder around St-Armand and Frelighsburg, Quebec.

Friday 08:

The Canadian Parliament meets for the first time in Ottawa.

Monday 11:

The Allahabad High Court (then Agra High Court]] is established in India.

Friday 22:

Battle of Custoza: an Austrian army defeats the Italian army during the Austro-Prussian War.