my class' art teacher said we're going to do a activity, so what day was the 21st? :< one of the kids said something like this: In the West the Resurrection of Jesus was celebrated on the first day of the week, Sunday, when Jesus had risen from the dead. ... The Council of Nicaea in 325 decreed that Easter should be observed on the first Sunday following the first full moon after the spring equinox the art teacher then said: "Yes, if you are Christan that is what the 21st is." ;.; like 5 out of 25 people in my class a Christan