It's that special time of year when homes are decorated with lights and the shops are full of people buying presents.
It's the lead-up to Christmas. It's also the start of a festival called Advent.
Advent is the season in the Christian calendar that lasts for four weeks.
It begins four Sundays before Christmas Day and ends on Christmas Eve.
At this time Christians look forward to the birth of Jesus and think about what this means.
The word 'advent' means 'coming' or 'arrival'.
It's also the start of the New Year in the Christian Church.
During Advent Christians attend church services. They light a special Advent candle on each of the four Sundays leading up to Christmas Day.
A wreath is another traditional Advent decoration, made from green leaves and circle-shaped.
They are often hung on the door or placed on the dining table.
Another part of Advent is opening the windows of an Advent calendar.
The calendar shows that Christmas is coming.
Each day a new picture is revealed.
Behind each door is a picture, or maybe even a chocolate!
The day after Advent ends is Christmas Day: the day when Christians celebrate the birth of Jesus Christ.





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