Orthodox Fasting Calendar 2025 Ocali. B = [ (2 * [y / 4] + 4 * [y / 7] + 6 * a + 6) / 7]; April 28 /april 15 โ the entry of the lord into jerusalem.
Refrain from meat, fish, dairy, and eggs. The great fast, or great lent, is the most significant and solemn fasting period in the orthodox christian liturgical calendar, beginning at sundown on cheese fare sunday and culminating on holy saturday, just before easter sunday.