2. Why is there a difference between telling the time from 1 am/pm and 2-12 am/pm?

Am - in the morning , after 12 pm is afternoon

1am is one hour after 12am aka a new day . 2-12 pm is afternoon

According to my research,a (3 million) people is the correct answer.

I'm not sure if you mean for us to translate or to answer. but i'll translate as these are questions for you to answer. 1. how long has it been since you've read a book? . 2. how long has it been since you've eaten breakfast? . 3. how long has it been since you've talked with your spanish professor?