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Hence 12am is 12 hours before the meridiem ( midday ) and 12pm is 12 hours after the meridiem (midday). Thus 12 am and 12 pm are the same time which is midnight. However, having said that, the convention we use is 12am is midnight and 12pm is non or midday.
To convert 12 hour time to 24 hour time format we follow the steps below: If the time is between 12:00 AM and 12:59 AM, we subtract 12 hours. If the time is between 1:00 AM and 12:59 PM, 24 hour time is same as 12 hour time. If the time is between 1:00 PM and 11:59 PM, we add 12 hours to input time.
19 kwi 2024 · Is noon 12 AM or PM? Noon is 12 PM. This designation follows the logical progression of the 12-hour clock, where the hours after midnight build up from 12 AM to 11 AM, culminating in noon as 12 PM. Similarly, the cycle post-noon starts at 12:01 PM and counts up to 11:59 PM, resetting at midnight, which is marked as 12 AM.
PM = Post meridiem: After noon. Using numbers from 1 to 12, followed by am or pm, the 12-hour clock system identifies all 24 hours of the day. For example, 5 am is early in the morning, and 5 pm is late in the afternoon; 1 am is one hour after midnight, while 11 pm is one hour before midnight.
There is no widely accepted convention for how midday and midnight should be represented: in English-speaking countries, "12 p.m." indicates 12 o'clock noon, while "12 a.m." means 12 o'clock midnight. [4][5][6] History and use. Exeter Cathedral Astronomical Clock, showing the double-XII numbering scheme.
Meanwhile, PM is post meridiem and means in English ‘after midday’. These abbreviations are used to identify the time in the 12-hour clock format instead of using 24 hours. Considering that day has 2 cycles, AM and PM denote whether it is before or after the middle of a day.
So, the duration of pm is from 12:00 pm (noon) up to 11:59pm (a minute before exact midnight). So, to write whole day, or a 24 hours duration using a 12 hours format would be 12:00 am up to 11:59 am. It can also be written as 12:00 am to 12:00 am.
