Ascension Day is the 40th day of Easter. It occurs 39 days after Easter Sunday. It is a Christian holiday that commemorates Jesus Christ's ascension into heaven, according to Christian belief. Ascension Day is one of the earliest Christian festivals, dating back to the year 68. According to the New Testament in the Bible, Jesus Christ met several times with his disciples during the 40 days after his resurrection to instruct them on how to carry out his teachings. It is believed that on the 40th day he took them to the Mount of Olives, where they watched as he ascended to heaven. https://www.timeanddate.com/