antemeridian is AM; postmeridian is PM.
AM: Ante Meridiem; PM: Post Meridiem
Ante Meridian Latin = "before midday" Post Meridian Latin = "after midday"
23hours and 20minutes is 40minutes short of a full 24-hour day. 40minutes less than a complete day after 2:40 pm is 40minutes before 2:40 pm tomorrow = 2:00 pm tomorrow.
It is important because if you didn't, you would be measuring 12 hours instead of the full 24. I think...
7:25 PM
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The acronym PM can mean post meridian, which is the time from noon until midnight, or it can mean prime minister.
AM: Ante Meridiem; PM: Post Meridiem
post meridem
They are latin abbreviations, ante meridiem (before midday) for a.m and post meridiem (after midday) for p.m.
Am = Ante meridian and Pm = post meridian
Tornadoes can form at any time of day or night. The time from 3 PM to 9 PM is the most common time for tornadoes to form.
2100
It is necessary to specify the hour when giving the time in that form.
8:22 pm
Yes. This is the time when they are most likely to occur. However, tornadoes can form at any time of day or night.
AM is ante meridian - After 12Midnight and before 12 Noon. PM is post meridian - After 12 Noon and Before 12 Midnight.