Angels according to Orthodox tradition - what they do, how they were created, how many types of angels there are, how some fell, their role in spiritual life - amazing article at http://www.omhksea.org/2012/11/the-angels-according-to-orthodox-tradition/ (icon: an Angel of the Lord)
The Greek Santa Claus is Agios Vasilis (Αγιος Βασίλης) and he brings presents on New Year’s Eve. Agios Vasilis is St. Basil in English, and he comes from Caesarea in Asia Minor. He died on January 1st, 379 AD, and the Greek Orthodox Church celebrates his memory on January 1st. This is why in Greece Agios Vasilis brings presents on New Year’s Eve and not on Christmas, as it happens elsewhere in the world.