How far in advance do you need to apply for a personal tourist visa for the United States and Canada?

This is very simple. You need to make an appointment in advance on the official website of the embassy. The appointment has been made in early January. Go to the interview on the day you make the appointment. The results will be available on the same day and the visa will be issued in three days

In other words, you can make an appointment half a month before departure at the latest. You can probably make an appointment for a week later, and then the procedure will be completed three days later. However, this is too tight. It is recommended to leave time to prevent accidents

The earliest reservation is made three months in advance, and the embassy will not accept it if it is more than three months in advance.