Greek Orthodox Lent 2025 Rules. Holy week follows, along with the great and holy week. During great lent, orthodox christians engage in a strict fast, abstaining from all animal products, including meat, dairy, and eggs.

Holy week follows, along with the great and holy week. Orthodox christians observe several fasting periods throughout the liturgical year, including the great lent, the nativity fast, the apostles’ fast, the dormition fast, and most wednesdays.