If the cell in the A3 column is intended to be the total of the same row's
A1 and A2 cells, then formatting A3 as [h]:mm.ss will change it from 4:15:00
PM to 40:15:00.
I can't see where your 2:50:00 AM total comes from.
You asked, in your subject line though not in the body of your message,
about converting hours to days. If you want your 40:15:00 displayed as
days, then merely format it as General or Number.
--
David Biddulph
Sharon Tischner said:
A1 A2 A3
18:15:00 22:00:00 4:15:00 PM
18:15:00 22:05:00 4:20:00 PM
total 2:50:00 AM