I used to manage a bank in a grocery store around 2007 which was a “fairly” new concept with more then bank hours…. usually only 2 people worked at a time after 4. People would call relentlessly from 5 on to ask when we closed… My answer would always be 7 o' cock. It was close enough to clock where very very few people would have a reaction other then… Umm did you say 7? Lol. Still one of my favorite memories from working in that hell hole.