LITURGICAL DAY – A liturgical day includes the cycle of services beginning with vespers in the evening and ending with the 9th hour the following afternoon. Thus when we speak of services for Sunday, or the Resurrection service, we begin with vespers, which is served Saturday evening. Similarly, vespers for the 25th of the month will be served on the evening of the 24th, and the Wednesday services begin on Tuesday evening. (As regards rubrical instructions vespers is counted as belonging to the new day, although the change from one day to the next actually takes place during the course of vespers.)