The exception was embodied in the ecclesiastical calendar.

The beginning of a real ecclesiastical calendar, with definitely fixed feasts and fasts, now appears.

This book deals with time, studying the day, week, month, year as well as the Moon and the ecclesiastical calendar.

The compositions in the nave deal with the earthly life of Jesus and the ecclesiastical calendar.

The times of fasting are dependent on the ecclesiastical calendar.

A Syrian ecclesiastical calendar of an early date confirms the above and gives the merchant a name.

The ecclesiastical calendar, considered by church historians to be highly scientific and deeply complex, turned out to be quite simple.

The demand would have been high, considering that the ecclesiastical calendar of the time specified more than 180 fast days which religionists had to observe.

An ecclesiastical calendar would give us the exact date.

Both dates appear on Orthodox cornerstones, ecclesiastical calendars and formal documents.