Santa has set off on his epic journey to deliver presents to children all around the world.
The man in the red suit has 24 hours to visit 2.3 billion children in more than 200 countries and leave them a little something for Christmas.
At the moment (2pm), Santa is just leaving Russia and has so far delivered just over half a million presents.
His next stop is Japan - and he's not expected to reach Ireland until the early hours of tomorrow morning.
You can track his progress below: