Holy Week violet covers during Passiontide, but the crucifix covers can be white instead of violet on Maundy Thursday). Some Protestant churches practice the foot washing (Maundy) ceremony on Maundy Thursday. For others, it may be the only time in the year when Holy Communion is celebrated. Good Friday commemorates the crucifixion of Jesus and his subsequent death. Commemorations of often solemn and mournful, many denominations use Good Friday to perform the Stations of the Cross, or other commemorations of the Passion, either as a self-guided time of reflection and veneration or as a procession of statues or images of the stations.
Islamic calendar Islamic calendar (see section below) in which odd-numbered months have thirty days (and also the twelfth month in a leap year) and even months have 29. In Arabic, the "first day" of the week corresponds with Sunday of the planetary week. The Islamic weekdays, like those in the Hebrew and Bahá'í calendars, begin at sunset. The Christian liturgical day, kept in monasteries, begins with vespers (see vesper), which is evening, in line with the other Abrahamic traditions. Christian and planetary weekdays begin at the following midnight. Muslims gather for worship at a mosque at noon on "gathering day" (, meaning