(CNN) He sees you when you're sleeping, and knows when you're awake -- but these days, we can keep tabs on him too.

Santa Claus has begun his Christmas Eve journey delivering presents around the world and will be shimmying down chimneys near you soon, according to the US military command charged with protecting North American airspace.

NORAD's radars detected Saint Nick's sleigh departing the North Pole just after 4 a.m. ET on Tuesday morning, shortly after he reviewed his flight plan with his nine reindeer.

His first stops were in eastern Russia and Asia, just in time for Christmas Day there.

The public can track Santa's journey by accessing NORAD's official Santa Tracker , and can also call 1-877-HI-NORAD (1-877-446-6723) to speak live with NORAD trackers.

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