The following Canadian provinces and territories have a holiday on the first Monday of August: British Columbia (British Columbia Day), Alberta (Heritage Day), Manitoba (Civic Holiday), Saskatchewan (Saskatchewan Day), Ontario (Simcoe Day), Nova Scotia (Natal Day), Prince Edward Island (Natal Day), New Brunswick (New Brunswick Day), and the Northwest Territories (Civic Holiday).
Quebec, Newfoundland and Nunavut do not have an August long weekend holiday and therefore conduct business as usual.
But cavirtex.com ( Alberta ) is up ( although it has always been slow ) and working normally as far as I can tell.