Richard Hogan: The technological and logistical magic of Santa

Taking weather and time zones into account, Santa has about 32 hours to accomplish his task; making all the children around the world who believe in him happy.

Richard Hogan. Photograph Moya Nolan

There are only four more sleeps. With the length of four long days and four intolerably long nights. 

All over this pale blue dot children are holding their breath, waiting for darkness to cover the roofs, just a few more times. Then magic.