If you've got little ones this Christmas and you're looking for an excuse to put them to bed early, Google has a great little feature to help.
The Google Santa tracker - santatracker.google.com - will follow Santa on his journey across the globe, stopping off in the world's capitals and giving your kids plenty of information on them as well.
It also calculates how many presents Santa's delivering per hour and what speed his reindeers are travelling at (it's fast, like Concorde fast) and when they'll hit your town, village or city. For those of us in Dublin, Santa is - according to Google - expected to arrive on 13.5 hours from now. As of writing, he's currently somewhere between Japan and Russia.
Not only that, NORAD - that's the North American Aerospace Command - also tracks Santa's journey across the globe via satellite trajectory that's normally used to monitor ICBM launches. Yay, fun!