Have you ever wondered why Easter is scheduled on a different date every year unlike, for example, Christmas? The calculation of the date of Easter is based on astronomy. With this activity, your students will explore the cycles that dictate the dating of Easter. Comparisons are made between Easter and other religious holidays such as Lunar New Year, Rosh Hashanah and Ramadan. The students will also explore the different types of calendars used for these holidays, calendars based on the moon, su