For non-Christians, it is also a time to come together as a family.
Unlike Christmas, the date of Easter is subject to change, as its date is determined by a lunisolar calendar.
So when is Easter, why does its date vary and how is it celebrated? Here's everything you need to know:
When is it?
Easter marks the end of the 40-day period of Lent, during which those who observe the festival abstain from everyday luxuries such as rich foods.
The week before Easter is widely referred to by Christians as "Holy Week", as it recalls the events surrounding the passion, crucifixion, burial and resurrection of Jesus Christ.
This year, Easter Sunday is taking place on Sunday 21 April.
It marks the latest Easter has occurred since 2011, when it fell on 24 April.
Some sectors of Christianity celebrate Easter on a different date in accordance with the Julian Calendar, a Roman calendar first proposed by Julius Caesar in 46 BC.
Orthodox Christianity will celebrate Easter on Sunday 28 April this year, a week after Western Christianity.
Why does the date change every year?
This means its date on the Gregorian calendar can vary every year.
The date of Easter Sunday falls on the first Sunday after the first full moon following the vernal equinox in March.
By taking into account the date of the vernal equinox (which this year falls on Wednesday 20 March) and the next following full moon (Friday 19 April), it was therefore calculated that Easter Sunday would take place on Sunday 21 April in 2019.
What does Easter commemorate?
Those who observe the Christian festival of Easter celebrate the resurrection of Jesus Christ three days after he was crucified, as outlined in the New Testament.
Easter has strong links with the Jewish festival of Passover, another moveable feast which is taking place this year between Friday 19 April and Saturday 27 April.
How is it celebrated?
The first church service that some Christians attend in celebration of Easter is held on Holy Saturday, the day before Easter Sunday and the last day of Holy Week.
In addition to church services, it's also tradition for Christians to commemorate Easter with music, candles, flowers and the ringing of church bells.
While Easter is a religious festival, it is also celebrated by a variety of communities of different faiths across the globe.
Many mark the occasion by exchanging chocolate eggs, which are traditionally symbolic of rebirth and new life.
Lots of children also take part in the festivities by participating in Easter egg hunts.
On Saturday 20 April, an Easter vigil mass is due to take place at St Peter's Basilica in the Vatican.
Easter morning mass will be held the next morning at 10am in St Peter's Square, where it will then be followed by a blessing from Pope Francis.