Ascension Day is a Christian holiday that commemorates the ascension of Jesus Christ into heaven, which is described in the New Testament of the Bible. It occurs 40 days after Easter Sunday, marking the end of the Easter season. This event is significant as it represents the completion of Jesus' earthly ministry and his return to God the Father. Celebrated on a Thursday, Ascension Day is observed by various Christian denominations, including Catholics, Protestants, and Orthodox Christians. Many churches hold special services, often including readings from the Bible and prayers. The day serves as a reminder of the promise of Jesus' return and the hope of eternal life for believers.