The ecclesiastical calendar used by the Church of Greece and other Eastern Orthodox churches adhering to the Julian calendar provides the dates for liturgical celebrations, fasts, and feasts throughout the year. This calendar designates specific days for commemorating key events in Christian history and the lives of saints, shaping the rhythm of religious life for millions of adherents. For example, it determines the date of Easter, the most important feast in the Orthodox Christian year.
Maintaining this traditional calendar preserves a connection to the historical practices of the Eastern Orthodox Church and provides a framework for spiritual reflection and observance. The dates of major feasts influence social and cultural life within Orthodox communities, impacting family traditions, and community celebrations. The yearly cycle of fasts and feasts offers adherents opportunities for spiritual growth and renewal.