今日が振替休日だということを知らなかったんです。I forgot about the fact that today is a holiday...

何年か前、7月4日が水曜日だったときにその前の日曜日(7月1日)のミサで某神父さんが "Somebody asked me if we have a special mass on July 4th. Unfortunately, July 4th is a holiday, not a Holy day. So, we only have a weekday mass at 7:30 am." と…