Как написать по англискому 15: 10, 21: 15, 14: 45, 17: 40, 19, 25

Думаю, что так
15:10 - its ten past three pm....
21:15 - its a quarter past nine pm...
14:45 - its a quarter to three pm..
17:40 - its twenty to six pm...
19:25 - its twenty five past seven pm...