epagomenal

The birthday of Isis was celebrated on the fourth epagomenal day.

The lights of the Egyptian epagomenal days were placed for the dead in tombs.

The year with the sixth epagomenal day is traditionally designated as the Luke-year.

Epagomenal days are days within a solar calendar that are outside any regular month.

Typically the vague year is divided into 12 schematic months of 30 days each plus 5 epagomenal days.

During this period, the fourth epagomenal day would have coincided with August 12 on the Roman calendar.

The sixth epagomenal day is added every four years without exception on August 29 of the Julian calendar.

The traditional Egyptian calendar had 365 days: twelve months of thirty days each and an additional five epagomenal days.

The Armenian calendar is divided into 12 months of 30 days each, plus an additional (epagomenal) five days are called aveleacʿ ("superfluous").

The Season of Harvest consisted of four 30-day months after which followed a period of 5 epagomenal days, which brought the year to 365 days.

The Zoroastrians adopted the wandering Egyptian solar calendar of twelve months of thirty days plus five epagomenal days.

The inundation fell between mid-July and mid-November and began after the period of 5 epagomenal days known as ḥriw rnpt, "those over the year".

Like the Coptic calendar, the Ethiopic calendar has twelve months of 30 days plus five or six epagomenal days, which make up a thirteenth month.

This part of the myth shows how the Egyptians explained away the five extra, or epagomenal days, which they added to their calendar of three hundred and sixty days.

The Bahá'í calendar includes enough epagomenal days (usually 4 or 5) before the last month ('Alá') to ensure that the following year starts on the vernal equinox.

The sol that is added every tenth year is epagomenal (not counted as part of the week), thus the two-year rotation of the sols of the week is not disrupted.

All civil acts were dated according to the vague year composed of exactly 360 days plus the five epagomenal days consecrated to the Neters: Osiris, Isis, Seth, Nephthys and Horus.

The Alexandrian calendar adapted the Egyptian calendar by adding a 6th epagomenal day as the last day of the year in every fourth year, falling on 29 August preceding a bissextile day.

Nadine Guilhou suggests that the Eye's rampage alludes to the heat and widespread disease of the Egyptian summer, and in particular to the epagomenal days before the new year, which were regarded as unlucky.

The Canopus Stone of Ptolemy III, in the Rosetta Stone-(Ptolemy V) decree series, added a 6th Epagomenal day in 238 BC, every four years.

A first calendar reform (of uncertain date) introduced five epagomenal days at the end of the year, with the result that each festival then had two dates: one in the old 360-day calendar, and one in the new 365-day calendar.

In the Gregorian year 2015 Anno Domini, the Ethiopian calendar year 2008 begins on September 12, rather than September 11, on account of this additional epagomenal day occurring September 11 every four years.

The reform eventually went into effect with the introduction of the "Alexandrian calendar" (or Julian calendar) by Augustus in 26/25 BCE, which included a 6th epagomenal day for the first time in 22 BCE.

The most important of these began during the five epagomenal days at the end of the year, following Mesore (Coptic Mesori), the twelfth and last month of the Egyptian calendar that corresponded roughly to the Roman month of Augustus.

This Ptolemaic calendar reform failed, but was finally officially implemented in Egypt by Augustus in 26/25 BCE, now called the Alexandrian calendar, with a sixth epagomenal day occurring for the first time on 29 August 22 BCE.