There are two common ways of telling the time.
1) Say the hour first and then the minutes. (Hour + Minutes)
6:25 - It's six twenty-five
8:05 - It's eight O-five (the O is said like the letter O)
9:11 - It's nine eleven
2:34 - It's two thirty-four
2) Say the minutes first and then the hour. (Minutes + PAST / TO + Hour)
For minutes 1-30 we use PAST after the minutes.
For minutes 31-59 we use TO after the minutes.
2:35 - It's twenty-five to three
11:20 - It's twenty past eleven
4:18 - It's eighteen past four
8:51 - It's nine to nine
2:59 - It's one to three