Liturgical calendar

principal calendar system, mainly used in Ethiopia and Eritrea

annually recurring fixed sequence of Christian feast days

specific colours used for vestments and hangings within the context of Christian liturgy

The Menaion (, , ; , ) is the liturgical book used by the Eastern Orthodox Church and Eastern Catholic Churches which follow the Byzantine Rite, containing the propers for fixed dates of the calendar year, i.e. entities not dependent on the date of Easter.