In parts of Canada, Family Day is a statutory holiday occurring on the 3rd Monday of February except in BC where it's the 2nd Monday of February. In the provinces of Manitoba, Nova Scotia and Prince Edward Island, the holiday is instead termed Louis Riel Day, Nova Scotia Heritage Day and Islander Day respectively.
Since this is not a federally established holiday all federal workers work on Family day including post office employees and public servants.
Family Day was originally created to give people time to spend with their families but it also provides a day off between New Years Day and Good Friday as they are approximately three months apart.
As mentioned above, unfortunately, not everyone gets Family Day off, which makes it a debatable holiday in many provinces. Why can't the whole country simple agree on 9 or 10 common statutory holidays remains a mystery and a good indicator of just how overcomplicated our laws are.
Common Family Day activities include skating, playing hockey, snowboarding/skiing and going to various winter festivals. But the best best thing about of Family Day must be beaver tails and stuffing ourselves silly with pancakes with maple syrup!