Как написать время по 1.27, 19.38, 22.12, 24.00, 6.50.

1.27 - It`s twenty seven minutes past one. / It`s one twenty seven am.
19.38 - It`s twenty two minutes to eight. / It`s nineteen thirty eight pm.
22.12 - It`s twelve minutes past ten. / It`s twenty two twelve pm.
24.00 - It`s twelve o`clock. / It`s twenty four pm.
6.50 - It`s ten minutes to seven. / It`s six fifty am.