The North American Aerospace Defense Command (NORAD) will help you and your children to track Father Christmas on his Christmas 2015 journey - but at what time?
NORAD usually focuses on defending US airspace but every December it helps children around the world track Santa Claus' annual journey from the North Pole delivering presents.
Santa's first stop is the Republic of Kiribati in the Pacific Ocean, before he makes his way to houses around the globe.
You can follow Santa and his reindeer on the NORAD website and track Santa's journey to England.
Children can also follow Santa on special apps for tablets and mobiles.
NORAD starts tracking Santa at 7am GMT on Christmas Eve, when he begins his journey around the world.
"Keep in mind, Santa's route can be affected by weather, so it's really unpredictable" the NORAD website warns. "It appears he only arrives when children are asleep."
Nasa have confirmed that the International Space Station will be passing over the UK on Christmas Eve - that could easily be mistaken for Santa's sleigh.
The International Space Station (ISS) will pass over the UK in the later afternoon on Christmas eve, rising in the west at 4.42pm and passing low in the sky and setting in the south east at 4.50pm.
