Extract date from string and perform difference

[Legoman]

See this thread from today with the same issue written slightly differently

Comparing two strings and checking greater than 1hr

I m having to string vaules Str_starttime = 02: 00pm Str_endtime = 05:00pm I need to check The difference between this 2 variables is greater than or equal to 1hr Str_starttime - Str_endtime > = 1hr