How do I write the words in the clock time

I will say twelve o'clock at 12:00 and but what is about 12:01, 1:01, 2:02, etc?

For 12:01 you can say one minute after twelve o'clock. The rest should follow logically. You could also do it in military time. So 12:01 would be twelve hundred and one hours.

You can say twelve oh one, 1 oh 1, 2 oh 2.

You could also say 2 minutes after 2. I would look at my watch and if it was within a couple minutes of the top of the hour, I would just say that it is one o'clock, like I used to with an analog watch. People are too exact with time these days when it doesn't matter.

Day Time------

1. we use just 12 o'clock or 12 noon.
2. 12:01,1:01,2.02 - say as 12.01 p.m , same as 1:01p.m. , 2:02 p.m
3. Or say Twelve past one , 1 p.m. or One past one , Like that way- Two past two.

Night time------

1. we use just 12 o'clock or 12 night.
2. 12:01,1:01,2.02 - say as 12.01 a.m , same as 1:01a.m. , 2:02 a.m
3. Or say Twelve past one , 1 a.m. or One past one , Like that way- Two past two.

(Here a.m means anti-meridian)