One year my son was performing in Godspell during Holy Week. The whole family came to see him on Good Friday (this show was in a public school and the director was unaware that it was Holy Week but said it was his favorite musical.) So we all decided to observe Good Friday starting the evening of Holy Thursday (the fasting etc.) so we could go out for pie after the show. I later found out that is actually the most appropriate thing to do.
Yep - Sunset to sunset is the general rule for fasting - then comes the feasting. Pie is a good way to feast. :)
Was the show good? I think the director may have been pulling a sneaky - you know how religion in schools is viewed and has been viewed for a few years now. I know my kids school invariably put on three performances of Jesus Christ, Superstar during Holy Week. I am sure the timing was purely coincidental. ;)