The Kemetic Orthodox faith observes a "civil" or celestial calendar of 365 days (12 months of 30 days each, plus five epagomenal days for the births of the Great Names of Iunu (Heliopolis)) with lunar dates from the lunar calendar placed as they occur in each annual moon cycle. The Kemetic Orthodox civil calendar is calibrated, as was its ancient counterpart, to the rising of the star Sirius (Sopdet in Kemetic) upon the horizon after a 70-day period of invisibility, corresponding to the end of the month of July and beginning of the month of August in the modern Gregorian calendar.

Within the festival calendar are a number of holidays dedicated to differing Names, along with those celebrated by all Kemet, such as New Year's Day (usually in the first week of Gregorian August); the Mysteries of Wesir (Osiris in Greek) (last week of November/first week of December); the Raising of the Djed Pillar (early January); and the Festival of Purification (mid-May). Festivals are celebrated with processions of icons and statues, prayer and liturgy, and sometimes ritual drama, and generally culminate in a communal meal. The House of Netjer temple sponsors an annual live New Year's Retreat that involves all devotees and priests in celebrating the major rituals and renewals of the most important holiday of the Kemetic faith. The fifth annual Retreat will be held from August 1-6, 2003.

See also:
Wepet Ronpet: The Opening of the Year
The Mystery of Process