in 1984-1985 the new ambrosian liturgy of the hours was published, and in 2006 the new ambrosian rite of marriage. on 20 march 2008 the new ambrosian lectionary, superseding the 1976 experimental edition, and covering the whole liturgical year, was promulgated, coming into effect from the first sunday of advent 2008 (16 november 2008). it is based on the ancient ambrosian liturgical tradition, and contains in particular, a special rite of light ("lucernarium") and proclamation of the resurrection of jesus, for use before the saturday-evening celebration of the mass of the sunday, seen as the weekly easter. pope john paul ii celebrated mass in milan using the ambrosian rite in 1983, as did pope francis in 2017.