Germanos’s name day is May 12, the feast of Germanos of Constantinople.
Churches that follow the Old (Julian) Calendar keep the same feast on May 25 of the civil calendar. See everything commemorated on May 12.
The saint behind the name
Germanos of Constantinople
May 12, Hierarch, Γερμανός Κωνσταντινουπόλεως
Germanos was born in Constantinople in the seventh century, son of a patrician executed by the emperor. Raised among the clergy of the Great Church, he became Bishop of Cyzicus and in 715 Patriarch of Constantinople.
Also celebrating on May 12
These names share the feast, many of them other forms of the same name:
What to say on a name day
The Greek wish is Χρόνια Πολλά (Chronia Polla), “many years.” A call or a short message on the day is what people remember. See name day wishes you can send and what a name day is.