March = MR May = MA
I'm pretty sure the abbreviation of March is "Mar."
HWY is the abbreviation used in the US and Canada.
Like the USA, all countries have an abbreviation. Canada's abbreviation is CA. For other country abbreviations, you can see the related link.
Calgary is a city in Alberta, Canada and has no 2-digit abbreviation. The 2-digit abbreviation for Alberta is AB and Canada is CA.
Manitoba is the province that has the abbreviation MAN.
The abbreviation for Saskatchewan Canada is SK
CND
Yes. March is abbreviated as Mar.
The abbreviation is "Mar."
Not a state. YT is the abbreviation for the Yukon Territory, which is a province of Canada.
The conventional abbreviation for the month of March is "Mar." In some contexts where space is tight, a one- or two-letter abbreviation is used for each month, but that is not standard practice.
Ontario, Canada is abbreviated ON.