 Mass compositions written especially for Lent, such as Michael Haydn's Missa tempore Quadragesimae, in D minor for choir and organ, have no Gloria and so are appropriate for use in Advent.Bishop Perpetuus of Tours, who died in 490, ordered fasting three days a week from the day after Saint Martin's Day ().In the 6th century, local councils enjoined fasting on all days except Saturdays and Sundays from Saint Martin's Day to Epiphany (the feast of baptism), a period of 56 days, but of 40 days fasting, like the fast of Lent.