11:20 - twenty (minutes) past eleven (a.m.)
6:29 - twenty-nine (minutes) past six (a.m.)
4:45 - forty-five (minutes) past four (a.m.)
6:50 - fifty (minutes) past six (a.m.)
8:30 - half past eight (a.m.)
23:00 - eleven p.m.
20:07 - seven (minutes) past eight (p.m.)
21:42 - forty-two (minutes) past nine (p.m.)