antemeridian is AM; postmeridian is PM.
AM: Ante Meridiem; PM: Post Meridiem
Ante Meridian Latin = "before midday" Post Meridian Latin = "after midday"
From 5 PM to 9:30 PM, there are 4 hours and 30 minutes. This includes the full 4 hours from 5 PM to 9 PM, plus an additional 30 minutes to reach 9:30 PM.
48 hours from 3 PM will be 3 PM two days later. Essentially, you're simply adding two full days to the original time. So, if you start at 3 PM on a Monday, it will be 3 PM on Wednesday.
The time from 9 AM to 5 PM is a total of 8 hours. This duration includes the full hours from 9 AM to 4 PM, plus one additional hour from 4 PM to 5 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.
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It is necessary to specify the hour when giving the time in that form.
8:22 pm
AM is ante meridian - After 12Midnight and before 12 Noon. PM is post meridian - After 12 Noon and Before 12 Midnight.
Anti-Meridiem meaning before midday PM is Post-Meridiem meaning after midday