Your Boss is Orthodox?
Christmas isn't even truly suppost to be on the 25th of December,
This Jesus person was born more closer around middle of May,
December suppostly was a Roman Sun Gods Birthday till Christians twisted it all around, and the Noreigions came up with the Jolly Fat Man idea.
Ethiopians (Genna)also celebrate Christmas on Jan 7
This is really cool, an earth date calendar:
http://www.earthcalendar.net/index.php