Athenian Festivals

Of all the ancient Greek festival calendars, the calendar of Attica is the most complete. For this reason, it is a popular choice in Hellenic Polytheist communities, and is by far the most common festival calendar. Like other Greek calendars Attic months traditionally start at dusk following the first visual sighting of the new moon. The New Year begins on the first new month following the summer solstice. 

Delphic Festivals

Despite being famous for having a jam-packed festival calendar in ancient times, not much survives of the Delphic calendar. This makes it a good choice for anyone who finds a smaller number of festivals more manageable, those who want a good foundation on which to build their own festival calendar, anyone with a particular interest in the religious life of ancient Delphi, and anyone who would like to add a non-Athenian perspective. 

Journal Articles

Ancient Greek Calendars – Robert Hannah

The Greek Calendar – George Thomson

The Sacrificial Calendar of Athens – Stephen Lambert

Festivals of Rhodes – Irene Ringwood Arnold

Delphi & Cosmovision – Ioannis Liritzis & Belén Castro

Other Useful Links

Every TimeZone – local time converter

Roman Calendar – the roman festival year

ToposText – literature by location 

ORBIS – travel time in the Roman world, Stanford