That’s not lunch though, it’s dinner. It’s not about a work day going across the date, it’s about the changing of the date happening midway through the day. You wouldn’t go to the bank do some stuff during your “lunch” break only to discover you missed the deadline because it went over midnight, or every place you visit has different moments when bills expire, etc, etc. You working a night shift is a completely different scenario, by the time the date crosses over most places that are date sensitive are already closed for the day.