Palm Sunday, which leads to Easter, sometimes coincides with Passover. In three out of the four canonical gospels, (Matthew, Mark and Luke), it is written that Jesus' Last Supper occurred "on the first day of the Festival of Unleavened Bread, when it was customary to sacrifice the Passover lamb," according to Mark 14:12. However, according to Biblical Archaeology, we may be projecting our zeitgeist onto the past, especially because the gospels were written long after Jesus died. They write, "if we cannot know how Jews celebrated Passover at the time of Jesus, then we have to plead ignorance, and we would therefore be unable to answer our question." Whatever the answer is, it's a time of major holidays for many populations around the world. Easter, the Christian holiday that celebrates the resurrection of Jesus, is on April 16.