Between Christmas Eve and Christmas Day, Santa Claus's route around the planet includes stops at 2.5 billion homes, assuming that children of all religions receive a present from the jolly man in the red suit, Anders Larsson of the engineering consultancy Sweco told AFP.

"We estimated that there are 48 people per square kilometer (120 per square mile) on Earth, and 20 metres (66 feet) between each home. So if Santa leaves from Kyrgyzstan and travels against the Earth's rotation he has 48 hours to deliver all the presents," he said.