Why some people celebrate Christmas today
At the start of January you're normally heading back to school, the Christmas tree's packed away and mince pies are a distant memory.
But for millions of people around the world 7 January is Christmas Day.
Orthodox communities in Europe, Africa and the Middle East celebrate weeks after most of the Western world.
It's because they use a different calendar, called the Julian calendar, to work out what day Christmas should be.
A bit confused? Watch this!