Digital clock

3:33 It's possible for all the digits displayed on a digital clock in the hours:minutes format to be identical. The time shown above (3:33) is an example of such a situation. Other examples are 2:2 and 1:11. Note that the digits of 33:33 are identical, but it is not a valid time on a usual digital clock. The above example was for a usual 24-hour format digital clock. Let's consider a more genera