I don't know about Katy/Mike, but my 2 false alarms were on a Tues and a Thurs. The Thursday one may have been due to bad weather here if the lungs were local (not flown in), but I don't know because they don't tell me. The other one...the Tues call was Halloween morning, before the treat or treating even started, though granted someone could have been at a party the night before, but it was a Monday night so I doubt it.