Re: VBA date handling has taken at least five years off my lifespan
"Some of them are ambiguous such as "Thursday in Easter week": did they mean before or after Easter?"
Pagan! The week before Easter is called Holy Week, and it contains the days of the Easter Triduum, including Maundy Thursday, commemorating the Maundy and Last Supper, as well as Good Friday, commemorating the crucifixion and death of Jesus. In western Christianity, Eastertide, the Easter Season, begins on Easter Sunday and lasts seven weeks, ending with the coming of the fiftieth day, Pentecost Sunday. In Orthodoxy, the season of Pascha begins on Pascha and ends with the coming of the fortieth day, the Feast of the Ascension.
TL;DR: they did mean "after Easter".