I plan to enter Canada from the US by car via the Douglas Border Crossing. I must complete the ArriveCAN form, which asks my exact day and time of arrival. I don't know the exact time yet.
Can I complete the ArriveCAN form at the last minute at the Canadian border when queuing to enter Canada? That way I can provide the exact arrival time.
I know that one has to compete the ArriveCAN form no longer than 72 hours prior to arrival, but I didn't see any instructions as to the minimum time before arrival it has to be completed.