hour
Returns the hours in a given date string, s.
Syntax
R = hour(s)
R = hour(s, fmt)
Inputs
- s
 - A string representing a date. By default, if no fmt is specified, s is expected to be in the format dd-mmm-yyyy. If in this format, hour returns 0.
 - fmt (optional)
 - Gives the given format that s is in. Valid formats that can return
            a valid hour value are:
- 'dd-mmm-yyyy HH:MM:SS'
 - 'HH:MM:SS'
 - 'HH:MM:SS PM'
 - 'HH:MM'
 - 'HH:MM PM'
 - 'mmm.dd,yyyy HH:MM:SS'
 - 'yyyymmddTHHMMSS'
 - 'yyyy-mm-dd HH:MM:SS'
 
 
Outputs
- R
 - Hour in the given date string s. 0 is returned for most formats, fmt, which don't specify the hour.
 
Examples:
R = hour('Apr.04,2019 10:11:12', 'mmm.dd,yyyy HH:MM:SS')R = 10