Rose vestments are worn on the Fourth Sunday of Lent - Lætare - which is also of course Mothering Sunday.
On this day, 7th August 1679, Blessed Nicholas Postgate, the Priest of the Moors, was hanged, drawn, and quartered in York.
Nineteenth Sunday of the Year / Eleventh Sunday after Pentecost
Eighteenth Sunday of the Year / Tenth Sunday after Pentecost