For Christians, Easter is not just one day - it's a season of 50 days, a week of weeks, derived in its length from the fifty days between Passover and Pentecost (which means fiftieth) in Judaism. Easter season begins at sunset on the eve of Easter and ends with Pentecost, the day we celebrate the gift of the Holy Spirit and the birth of the Church (see Acts 2).

Easter season is more than an extended celebration of the resurrection of Jesus. In the early church, Lent was a season when persons who wished to become Christians were learning how to live the way of Jesus and preparing for baptism on Easter Sunday. Christians have referred to this time of formation as "catechesis" or "echoing the way of Jesus." The original purpose of the Easter season was to continue the formation of new Christians in the faith. Christians have historically referred to this formation process as "mystagogy" or "leading people into the mysteries." 

For more information https://www.umc.org/en/content/ask-the-umc-when-is-easter-over-what-comes-next

To learn how Easter is celebrated around the world

Click here https://www.umc.org/en/content/a-look-at-easter-traditions-around-the-world