If you have done this many times, please advise how. I am in similar situation as Ed in that my Monday starts on Sunday evening. I have been able to set up a 24-hr calendar, but I have to end a shift a minute early i.e. at 11:59. This leaves me with an odd minute so a job spanning three shifts over three days cannot have 24 hour duration. It will be 23 hours and 57 minutes….or if I force duration at 24 hours the job ends three minutes into the shift on the 4th day.