The figure I gave earlier of 132 was the possible times which could be read in a mirror on a 12 hour format clock, so there would be more possible numbers if I looked at the 13:00 up to 23:59 numbers.

I still might be wrong, but oh well, nothing ventured etc

00:00        
01:10        
05:20
and its reverse 02:50
15:21
and its reverse 12:51
21:15        
20:05        
10:01