Celebrating a.... name

For those that may find it interesting, today is my name day (i.e., the feast day when the saint after whom I got my name is celebrated).
So, there was a Saint Athanasius and in fact he is considered a great figure in the Church, both the Roman Catholic and the Orthodox. (In fact, St. Athanasius is called "The Great".)

Athanasius is mostly known from defending the faith, and in particular defending the divinity of the Lord in the early 4th century A.D., when the heresy of Arianism appeared. (Arianism claimed that Jesus is not full God (and therefore, He is not equal with the Father, in contrast with the Trinitarian dogma of Christian theology). More information about this can be found here and here . In the Orthodox Church his feast is celebrated twice a year, on May 2nd (like in the Roman Catholic Church) and on January 18th with St. Cyril of Alexandria.
Name days are celebrated in Greece like birthdays (but usually there is no cake!) and in fact ,until the early 20th century, people used to observe only their name day (at least those who were baptized Orthodox Christians) and not their birthdays.
So, I got some phone calls and e-mails from Greece wishing me "χρόνια πολλά" and I sent some e-mails myself to my friends that celebrate today.
And a cultural detail: In Greece, people do not usually invite over friends for name day's celebrations. Rephrase: People do not need to be invited for a name day celebration. They just drop by the place of the person. The idea is that since everybody knows when your name day is, you do not have to make any invitations. People will just drop by and apparently you are expected to have something planned. On the contrary, for birthdays invitations must be made.