На английский язык словами 6:00; 12:10; 13:15; 16:20; 17:45; 03:30; 18:50; 14:05; 07:55; 20:30

Если это вопрос, тогда It is six o'clock, it is ten minutes part twelve, it is fifteen minutes past one, it is twenty minutes past four, it is fifteen minutes to six, i is half past three, it is ten minutes to seven, it is five minutes past two, it is five minutes to eight, it is half past eight.

6:00 - six am

12:10 - ten minutes past twelve (minutes можно опустить)

13:15 - a quarter past one pm

16:20 - twenty minutes past four pm (minutes можно опустить)

17:45 - a quarter to six pm

03:30 - half past three am

18:50 - ten minutes to seven pm (minutes можно опустить)

14:05 - five minutes past two pm (minutes можно опустить)

07:55 - five minutes to eight am (minutes можно опустить)

20:30 - half past eight pm

ps.

Время с 00 до 12 обозначают a. m, а время с 12 до 00 часов p. m.

Вместо слова "пятнадцать" надо использовать quarter (четверть)

До половины часа надо использовать "past", а после половины - "to"

Слово minutes (минуты) в английском языке обычно опускается.

six o'clock in the morning, twelve o'clock and ten minutes, fifteen minutes after two, twenty minutes past four, a quarter to five five, half past four, five past eight minutes, half past eight.