according to Greek Orthodox tradition nearly every day is dedicated to the memory of a Saint or martyr and those named Demetris, Dimitris, Dimitrios, Jim, James and Mitros celebrate today.
The church of Agios Dimitrious is located in Fanariotatika and a mass took place this morning to mark the celebration.
When greeting some one on a name day it is common to say Kronia Pola, many years.