Ascension Day
39 days after Jesus rose from the dead, he calls his apostles together. The last time before he goes to Heaven. We read this in Acts. They leave Jerusalem. They climbed a mountain on the east side of the city. He told the Apostles that His task is accomplished. Now they must preach the gospel to every corner of the world. (Acts 1:4-8)
Acts 1:9 says:
After these words, they saw Jesus being lifted up. A cloud took Jesus with it and it disappeared from their sight.