In English we use “past” to say times after the hour until half past, or 30 minutes past the hour.
It’s twenty past nine
We use “to” to say times before the hour from 31 minutes until the full hour.
It’s twelve to ten
In English we use o’clock only at the full hour.
It’s five o’clock
We use “quarter” to say 15 minutes.
It’s quarter (15 minutes) to six
We use “half” to say 30 minutes.
It’s half (30 minutes) past seven
We can also just say the numbers in groups of two.
It’s seven twenty-five
When speaking about the different times of the day we often use: in the morning, in the afternoon, in the evening
It’s ten past ten in the morning
Be careful! In English we use at night NOT in the night
It’s eleven past ten at night