Register to reply

Is midnight PM or AM?

by Gamish
Tags: midnight
Share this thread:
Gamish
#1
Dec29-04, 03:09 PM
P: 114
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.
Phys.Org News Partner Science news on Phys.org
Scientists develop 'electronic nose' for rapid detection of C. diff infection
Why plants in the office make us more productive
Tesla Motors dealing as states play factory poker
Integral
#2
Dec29-04, 04:13 PM
Mentor
Integral's Avatar
P: 7,320
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.
Tom McCurdy
#3
Dec29-04, 04:20 PM
P: 1,113
Midnight= 12:00 AM

Tom McCurdy
#4
Dec29-04, 04:21 PM
P: 1,113
Is midnight PM or AM?

Noon = 12:00 PM
tribdog
#5
Dec29-04, 04:31 PM
P: 693
MidNoon = 12:00 HM
Monique
#6
Dec29-04, 05:29 PM
Emeritus
Sci Advisor
PF Gold
Monique's Avatar
P: 4,642
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..
Quantum_Prodegy
#7
Dec29-04, 07:11 PM
P: n/a
wats the sign at the video store say?
Les Sleeth
#8
Dec29-04, 09:13 PM
PF Gold
Les Sleeth's Avatar
P: 2,202
Quote Quote by Gamish
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.
It turns out your confusion is justified 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.
Evo
#9
Dec29-04, 09:29 PM
Mentor
Evo's Avatar
P: 26,552
Quote Quote by Les Sleeth
It turns out your confusion is justified 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.
I'll be darned, you're right. http://www.boulder.nist.gov/timefreq/general/misc.htm
KingNothing
#10
Dec29-04, 10:14 PM
P: 949
Noon and midnight aren't technically either one.
Ivan Seeking
#11
Dec30-04, 12:12 AM
Emeritus
Sci Advisor
PF Gold
Ivan Seeking's Avatar
P: 12,501
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.
Gokul43201
#12
Dec30-04, 12:28 AM
Emeritus
Sci Advisor
PF Gold
Gokul43201's Avatar
P: 11,155
Quote Quote by Ivan Seeking
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.
Better than 'Good AM' and 'Good PM'
KingNothing
#13
Dec30-04, 12:34 AM
P: 949
Quote Quote by Ivan Seeking
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.
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.
Ivan Seeking
#14
Dec30-04, 12:43 AM
Emeritus
Sci Advisor
PF Gold
Ivan Seeking's Avatar
P: 12,501
Somehow I don't think you're all following the idea here...

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

Even worse, it was a joke.

Gokul43201
#15
Dec30-04, 12:51 AM
Emeritus
Sci Advisor
PF Gold
Gokul43201's Avatar
P: 11,155
I'm feeling sick, so ignore my mumbling.
Math Is Hard
#16
Dec30-04, 01:05 AM
Emeritus
Sci Advisor
PF Gold
Math Is Hard's Avatar
P: 4,922
Quote Quote by Ivan Seeking
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.
Words are unneccesary. Just extend a handful of frozen broccoli to the greet-ee and that should be sufficient.
Ivan Seeking
#17
Dec30-04, 01:27 AM
Emeritus
Sci Advisor
PF Gold
Ivan Seeking's Avatar
P: 12,501
Quote Quote by Gokul43201
I'm feeling sick, so ignore my mumbling.
Don't feel bad, Hurkyl just threw me for a good one a few days ago.

I hate it when that happens!
Ivan Seeking
#18
Dec30-04, 01:28 AM
Emeritus
Sci Advisor
PF Gold
Ivan Seeking's Avatar
P: 12,501
Wow MIH, is that really you?


Register to reply

Related Discussions
The Midnight Hour General Discussion 1
Midnight hour General Discussion 5
Magnetic Help Due Midnight Introductory Physics Homework 5
Refraction problems due Midnight Introductory Physics Homework 0
Mirror due Midnight Introductory Physics Homework 1