One Friday, about two thousand years ago, a man named Jesus, who Christians believe is the son of God, was crucified by the Romans.
After he died, he was buried in a tomb which was sealed with a giant rock.
When his family and friends went to visit the tomb on Sunday morning, the giant rock had moved and an angel told them that Jesus wasn't there anymore.
Because he had risen from the dead.
Have you heard this story before?
It's the story of Easter.
Easter is the most important religious holiday celebrated by Christians.
Unlike most holidays, Easter doesn't have a set date in any calendar and changes every year.
But it always happens on a Sunday between March 22nd and April 25th.
Okay, so what exactly is Easter?
Easter is characterized by some very important days.
First, there's Holy Week.
The seven-day period that leads up to Easter Sunday.
During this week, Christians celebrate Jesus's life in different ways.
The day that Jesus was crucified and buried in the tomb is part of Holy Week and is called Good Friday.
But then on Sunday Jesus rose from the dead.
This is known as Easter Sunday and is the main day of celebration during Easter.
Many Christians go to church on the night before Easter Sunday or on Easter morning to celebrate with a special service.
And even though Easter is a Christian holiday, a lot of non-Christian people also enjoy celebrating it.
For many, it's a great time to meet with family and friends, go on easter egg hunts, and eat lots of delicious foods like chocolate eggs and hot cross buns.
But what do eggs have to do with Easter?
Eggs are a symbol of birth and life for Christians.
The egg represents the tomb that Jesus was buried in after he died.
And the way that chicks break out of the egg when they hatch is a symbol of how Jesus rose from the dead and left the tomb.
People paint or dye boiled eggs with different colors and use them for decoration.
Some people eat these eggs but many prefer the chocolate version that comes wrapped in colorful foil instead.
Hot cross buns are another special Easter food.
They are made at the end of lent, which is a special 40-day period of reflection and sacrifice with the cross representing how Jesus was crucified and the spices representing the spices that were used when Jesus was buried.
Lots of different countries have their own special Easter foods, too.
You might know some others.
Have you seen this character during Easter?
It's the Easter bunny and it is a super popular figure used throughout Easter.
Well, it's a bit of a mystery because nobody actually knows for certain where it came from.
There are lots of different stories from around the world about how the Easter bunny came to be.
During Easter, you can greet people who are celebrating with "Happy Easter".
Remember everyone celebrates special days in their own way.
Different people have different traditions that they enjoy during their celebrations and these are just some of the common ones seen during Easter.