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Is midnight PM or AM?

  1. Dec 29, 2004 #1
    Is midnight PM or AM? Does midnight end the previous day, or begin the next day? I have read that midnight is PM or AM, I have read that midnight is neither PM nor AM, it is a moment of no time. I have read that computers calculate midnight as 12:00 AM, and noon as 12:00 PM. I am very confused. The reason why I ask this is to try to disprove a sign at a local video store, hehe. Please answer this is you know the answer.

    Thanks in advanced. :smile:
     
  2. jcsd
  3. Dec 29, 2004 #2

    Integral

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    My logic has always been that the 12 represents a the start of a new hour, so it needs to be different from 11:59. Therefore 12:00AM must follow 11:59PM and 12:00PM must follow 11:59AM. Likewise it could be said that there is no doubt about 12:01, so simplicity says that we should make 12:00 am if 12:01 is am.

    By this logic 12AM is midight and 12PM is noon.
     
    Last edited: Dec 29, 2004
  4. Dec 29, 2004 #3
    Midnight= 12:00 AM
     
  5. Dec 29, 2004 #4
    Noon = 12:00 PM
     
  6. Dec 29, 2004 #5
    MidNoon = 12:00 HM
     
  7. Dec 29, 2004 #6

    Monique

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    midnight is 00:00 hours, thus AM :rollseyes:


    but technically 00:00 on the 25th December is equivalent to 24:00 on the 24th December.. :uhh:
     
  8. Dec 29, 2004 #7
    wats the sign at the video store say?
     
  9. Dec 29, 2004 #8

    Les Sleeth

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    It turns out your confusion is justified :tongue2: because it is technically improper to refer to the 12 o'clock hour as AM or PM.

    AM stands for Ante Meridian, which is Latin for: before midday

    PM stands for Post Meridian, which is Latin for: after midday

    At 12 o'clock it is neither before midday nor after midday (midday stands for middle point, not really "day"). The proper terms for the two 12 o'clock hours are midnight and noon; then a second past either it is 12:00:01 AM or 12:00:01 PM, respectively.
     
    Last edited: Dec 29, 2004
  10. Dec 29, 2004 #9

    Evo

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    I'll be darned, you're right. http://www.boulder.nist.gov/timefreq/general/misc.htm
     
  11. Dec 29, 2004 #10
    Noon and midnight aren't technically either one.
     
  12. Dec 30, 2004 #11

    Ivan Seeking

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    Alright then, what is the proper greeting at midnight or noon? Should I avoid greetings at these times..I mean, "good midnight" just doesn't sound right, and "good nooner" could get a person into trouble.
     
  13. Dec 30, 2004 #12

    Gokul43201

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    Better than 'Good AM' and 'Good PM'
     
  14. Dec 30, 2004 #13
    Well, the boundaries for day and night don't lie on midnight and noon. In fact, midnight and noon are the midpoints for day and night, so it should be extremely easy to decide a greeting at these times.

    Alternately, you could scribble a word on a napkin without looking and see if it is day or night.
     
  15. Dec 30, 2004 #14

    Ivan Seeking

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    Somehow I don't think you're all following the idea here...:biggrin:

    Morning comes before noon, and afternoon come AFTER NOON; thus the paradox. :rolleyes:

    Even worse, it was a joke. :rolleyes: :rolleyes: :rolleyes:

    :biggrin:
     
  16. Dec 30, 2004 #15

    Gokul43201

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    I'm feeling sick, so ignore my mumbling. :grumpy:
     
  17. Dec 30, 2004 #16

    Math Is Hard

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    Words are unneccesary. Just extend a handful of frozen broccoli to the greet-ee and that should be sufficient.
     
  18. Dec 30, 2004 #17

    Ivan Seeking

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    Don't feel bad, Hurkyl just threw me for a good one a few days ago. :biggrin:

    I hate it when that happens! :eek:
     
  19. Dec 30, 2004 #18

    Ivan Seeking

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    Wow MIH, is that really you?
     
  20. Dec 30, 2004 #19

    ph

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    MID - eclectic

    midnight is middle of the night. it is either one ~ you choose or snooze! once it gets to 11:59:60 it is technically midnight...AFTER that by one secono it is morning, altho it's considered night.

    okay. i'll stick with calling it MID-Night-electric no matter what the video store says : )

    i gave up believing what i read after reading a few paragraphs of that one book, i can't remember.

    (!xck) :eek:
     
  21. Dec 30, 2004 #20

    Math Is Hard

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    That's me - down in Texas. yeehaw! :biggrin:
     
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