It's super confusing. The easiest way I've found to understand it is to think of 12 as being zero, so the times go 11am (11) -> 00pm (12) -> 1pm (13) -> 11pm (

It's super confusing. The easiest way I've found to understand it is to think of 12 as being zero, so the times go 11am (11) -> 00pm (12) -> 1pm (13) -> 11pm (23) -> 00am (24) -> 1am (25).