Holy week: why does it fall on different dates from year to year?

Hi everyone,
This week is the last week of Lent and tomorrow is Easter Sunday, which is a day of happiness and celebration.
Easter Sunday falls on different dates from year to year.

Do you know why? If you look up at the sky tonight you will find the answer.

Can you remember the first day of Lent? And the day before? What do people usually eat?

Do you like decorating eggs? That is a good idea for tomorrow. You can also write an Easter greeting card to some friends or family.