Why does the celebration of Easter move every year?

Easter weekend is fast approaching, landing on April 9th this year. For years, I wondered why it moved around so much. In addition, when I began to learn more about my faith, I wondered why Easter doesn’t always land during the Jewish Passover. The history behind the floating holiday, and the disconnect from its Jewish roots, is fairly interesting and worth sharing as a part of my series on the history of Lent/Easter traditions.

A little background is necessary for understanding the whole matter. Easter is the celebration of the resurrection of Jesus, which occurred three days after his crucif...