When did Germany attack the Soviet Union?

The attack took place on the night of June 21-22, 1941. The first sabotage detachments began to penetrate even at sunset, in order to destroy the communication between the units in the rear of the Soviet army, and also try to capture key points of the infrastructure. Luftwaffe aviation took off at about 2 am German time, crossed the border at about 2:50 (or 3:50 Moscow time), in fact starting the war not at 4:00, as is generally accepted, but a few minutes earlier.