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Rabbitfoot said:
Does anyone have any idea?

If its a public holiday than most like they wont be working. Any specific help you are looking for?
 
http://www.cra-arc.gc.ca/tx/hldys/menu-eng.html

Apparently they are indeed working. Thanksgiving in Canada was on the 12th of October according to the above link which lists the public holidays in Canada.
 
There you have it. Guess its working for them.