How long does it take for new Canadian immigrants to land at the airport? Can immigration handle it at night?

The transfer time is at least 3 hours, including customs, immigration, baggage claim, etc. Immigration service is available 24 hours a day, don't worry. They all know the arrival time of international flights and can handle it whenever they arrive. It's just hard to say at this time. It depends on how many people are there when you arrive, how fast the immigration officer handles it, and whether your luggage and customs declaration are smooth. Generally speaking, the looser the time, the better.