Which is correct 12nn or 12pm?

Related questions

1. Do you lose a day flying to Japan?
2. Is 12am a new day?
3. Is midnight the first minute of the day?
4. What is 5pm military time?
5. Does flight time include time difference?
6. Why is 12pm before 1pm?
7. Is 12 30 at night AM or PM?
8. Is 6 in the morning AM or PM?
9. What is AM and PM short for?
10. Is it pm or am right now?

Tags

1. #variations
2. #midday
3. #clock
4. #sometimes
5. #daytime
6. #thereof
7. #midnight
8. #meridiem
9. #opposed
10. #written
11. #similar