When did the Soviet Union enter Korea?

The specific time is: after 0: 00 on August 9, 1945.

At this time, the Soviet Red Army marched into northeast China in four ways, and all the way (the south wing of the First Far East Army) marched into northern Korea with the cooperation of the Soviet Pacific Fleet. On August 12, this Soviet army captured the ports of Xiong Ji and Luo Jin in the north of Korea, and soon captured ports such as Luqing Port and Wonsan, and occupied Pyongyang on August 24th.

By the end of August, 1945, the Soviet troops who entered the north of Korea, with the cooperation of the people's armed forces led by Kim Il Sung, advanced to the vicinity of the 38th parallel. By August 30th, the Japanese Kwantung Army in northeast China and North Korea had all been disarmed.

By 1948+00, the Soviet Union handed over the administrative power north of the 38th parallel to the Korean people. By June+February, 65438, all Soviet troops had left Korea.