The Elaphebolia (Έλαφηβόλια) was an ancient Greek festival held at Athens and Phocis during the month of Elaphebolion (March/April dedicated to Artemis Elaphebolos (deer slayer). In the town of Hyampolis in Phocis, it would have been instituted by the inhabitants to commemorate a victory against the Thessalians.
Cakes in the shape of stags were offered to the goddess during the festival.
Modern followers of Hellenism (religion) observe Elaphebolia as a holiday. The date for 2016 is March 15.
References
Elaphebolia Wikipedia(Text) CC BY-SA