AM and PM.. they just don't make sense. - Discussion Forum

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AM and PM.. they just don't make sense.

2004-08-14, 5:55 AM #1

..would like a shrubbery.

Posts: 4,822

I always use military time because AM and PM confuse me. I could never remember if 12:00 am was midday or midnight.

Logically am and pm are incorrect. 12am comes 11 hours before 11am and one hour before 1am. So it goes 11pm - 12am. Logically you'd expect 12pm to come after 11pm.

Also, AM stands for "ante meridiem" which is latin for before midday and PM stands for "post meridiem" which means after midday. 12:00 in the morning is midday so isn't either AM or PM according to the defintion. 12:00 at night is exactly 12 hours before midday and exactly 12 hours after it meaning that it's also not AM or PM.

I just thought i'd share my confusion.

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2004-08-14, 6:22 AM #2

Sats

Is going to continue to take it.

Posts: 1,628

Yep. If we changed it, everyone would get even more confused though.

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2004-08-14, 6:25 AM #3

bradsh

Registered User

Posts: 1,583

You're wrong. Think about it. Midday is between 11:59 and 12:00. Therefore 12:00 is AFTER MIDDAY, as is 12:01. Which means they are PM.

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2004-08-14, 6:29 AM #4

..would like a shrubbery.

Posts: 4,822

What? there are 24 hours in a day. So half that is 12... midday is 12:00 exactly.

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2004-08-14, 6:31 AM #5

Flexor

Flexorator

Posts: 4,279

when your watch says 12:00, it's because twelve hours have passed thus, it's afternoon.

As for 12:00am, it should really be 00:00am

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2004-08-14, 6:32 AM #6

SAJN

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Actually I read somewhere there are only 23 hours and 59 1/2 mins in a day or something crazy like that.

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2004-08-14, 6:43 AM #7

happydud

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I've been using military time for easily 5, 6 years now.

I lurve it like a mother.

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2004-08-14, 6:48 AM #8

..would like a shrubbery.

Posts: 4,822

Quote:

Originally posted by SAJN_Master:
Actually I read somewhere there are only 23 hours and 59 1/2 mins in a day or something crazy like that.

If that were true then everyones watch would be wong and would end up 3 1/2 minites wrong in just one week. That does not happen.

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2004-08-14, 6:55 AM #9

DeTRiTiC-iQ

Britlandish

Posts: 5,649

actually I think it's closer to 59 minutes, we compensate every 4 years, you may have noticed.

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2004-08-14, 6:58 AM #10

mscbuck

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2004-08-14, 7:17 AM #11

BobTheMasher

Of what, we don't want to know.y

Posts: 4,243

I've been using a 24-hour clock on most of my time-telling devices for a while now..makes it all much nicer.

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2004-08-14, 7:27 AM #12

Evil_Tofu

Annoyed

Posts: 873

You find AM and PM confusing?

Now that scares me...

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2004-08-14, 7:28 AM #13

Jedigreedo

Watch Him Squirm

Posts: 2,068

Well then why doesn't the week start on Monday? Alot of stuff does like school, jobs, etc. usually all restart on Monday, why not the week? Confusing.

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2004-08-14, 7:28 AM #14

Nikumubeki

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Posts: 17,541

Hahaha, silly americans.

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2004-08-14, 7:30 AM #15

DeTRiTiC-iQ

Britlandish

Posts: 5,649

I consider the week to start on Monday... Considering Saturday and Sunday are the Weekend, and biblically the Sabbath was the last day out of 7.

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2004-08-14, 7:38 AM #16

Wolfy

I TYPE LOUD

Posts: 10,623

Quote:

Originally posted by TheJkWhoSaysNi:
If that were true then everyones watch would be wong and would end up 3 1/2 minites wrong in just one week. That does not happen.

Actually, he's fairly correct. Days are not actually 24 hours long. Thus, every four years, February has an extra day to account for this lost time.

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2004-08-14, 7:38 AM #17

BobTheMasher

Of what, we don't want to know.y

Posts: 4,243

I think the week starts on Sunday, and I get a break at the beginning and end of every week. [http://forums.massassi.net/html/tongue.gif]

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2004-08-14, 7:42 AM #18

..would like a shrubbery.

Posts: 4,822

I thought the leap year was because it takes 365 and a quarter days for the earth to go around the sun.

If we were losing 30 seconds a day, after 2 years our clocks would be over 6 hours ahead of the actual time. As we got around to the leap year we'd be 12 hours ahead. By adding an extra day we would still be 12 hours ahead.

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2004-08-14, 8:03 AM #19

DogSRoOL

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Posts: 6,227

[http://nominimumstore.com/catalog/images/SPIDERMAN-CLOCK.JPG]

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2004-08-14, 8:31 AM #20

Roach

Registered User

Posts: 5,275

Quote:

Originally posted by TheJkWhoSaysNi:
I thought the leap year was because it takes 365 and a quarter days for the earth to go around the sun.

If we were losing 30 seconds a day, after 2 years our clocks would be over 6 hours ahead of the actual time. As we got around to the leap year we'd be 12 hours ahead. By adding an extra day we would still be 12 hours ahead.

Well then, each day is closer to 23 hours, 59 minutes. There, problem fixed.

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2004-08-14, 8:35 AM #21

..would like a shrubbery.

Posts: 4,822

But clocks measure 24 hours in a day... the clocks would get ahead.

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2004-08-14, 9:04 AM #22

Wookie06

Administrator

Posts: 8,395

There is no such thing as an accurate watch or clock anyway. I'm pretty sure everyone here has noticed they occasionally must adjust the time on their watches or just deal with the inaccuracy. The earth takes precisely 23 hours, 56 minutes, and 4.2 seconds to make one rotation around itself. Google it.

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2004-08-14, 9:09 AM #23

Freelancer

Peelancer

Posts: 15,012

What I'm worried about is shouldn't there be some other time we have to add an extra day into some month or somthing. Surely leap year isn't THAT accurate. Isn't there some sort of dealibob where you have to do something special eevery millenium or something like that?

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2004-08-14, 9:23 AM #24

-Monoxide-

Banned

Posts: 2,813

I think you're not smart if you can't tell AM/PM times (unless your a Brit, because they use metric time (I think))

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2004-08-14, 10:10 AM #25

DogSRoOL

wtf is a catloaf?a

Posts: 6,227

A few hundered years ago, 12PM happened at night.
[http://forums.massassi.net/html/eek.gif]

>.>
<.<

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For a healty meal, eat mashed potatoes, peas, and catloaf.
Massassi's cuttin' into my free time, man.
Valuable Life Lesson: Frog + Potato Gun = Blindness
Worship Examples - Christians' love for God should be seen and heard, not merely talked about. It is through actions that one is determined to be Christian, not through words. Words (and thoughts, as well) deceive even one's own self, but the heart speaks truth.

[This message has been edited by DogSRoOL (edited August 14, 2004).]

Cat loaf, meet mouseloaf.
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2004-08-14, 10:14 AM #26

..would like a shrubbery.

Posts: 4,822

That makes a lot more sense.

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2004-08-14, 10:17 AM #27

DogSRoOL

wtf is a catloaf?a

Posts: 6,227

That's why it's messed up now...

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For a healty meal, eat mashed potatoes, peas, and catloaf.
Massassi's cuttin' into my free time, man.
Valuable Life Lesson: Frog + Potato Gun = Blindness
Worship Examples - Christians' love for God should be seen and heard, not merely talked about. It is through actions that one is determined to be Christian, not through words. Words (and thoughts, as well) deceive even one's own self, but the heart speaks truth.

Cat loaf, meet mouseloaf.
My music

2004-08-14, 11:24 AM #28

gammasts

What does this name mean, anyway?

Posts: 367

I just do like 3:00AM and 7:24PM and 12:00 Noon and 12:00 Midnight

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2004-08-14, 11:38 AM #29

DeTRiTiC-iQ

Britlandish

Posts: 5,649

Quote:

Originally posted by -Monoxide-:
unless your a Brit, because they use metric time (I think)

are you on drugs?

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2004-08-14, 11:48 AM #30

DEFINOTELY NOT SPE

Banned

Posts: 8,138

its 10.30

its dark

i'm a little tired

being so intricate about time doesn't really matter.

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2004-08-14, 1:09 PM #31

SilentSavur

"...squat all!"

Posts: 398

Alright, at work (army reserves, sig ops, just call me a pack rat :P..) We go on zulu time, meaning the 24:00 timing. So im use to it but you know.. I am use to AM PM, I mean.. No difference.. If your working midnights, and the work computer has a time that says 23:45.. Its 11:45.. I mean, doing midnights suck.. Wanna know why?

You think its tomorrow when in fact its today.. So if midnights get to you, heres a fact.. Zulu hours can do it to ya because you expect it to be a additional time rather then being use to AM/PM.. Im getting over it, but yeah.. and I aint american btw.. I got my took, on my R-O-O-F sipping a canadian beer! God knows I have... 56 cases of a 24 shrine.. [http://forums.massassi.net/html/biggrin.gif]

[http://forums.massassi.net/html/biggrin.gif]

.. Anyone wanna join me chug a few down? lol..

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2004-08-14, 1:59 PM #32

Wookie06

Administrator

Posts: 8,395

You do know that there is a difference between Zulu time and the 24 hour clock, right? Not trying to be a jerk but I can't tell from your post if you actually use zulu time or are confused.

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2004-08-14, 2:08 PM #33

Simbachu

Pikachu-lite

Posts: 1,153

Quote:

Originally posted by FastGamerr:
Hahaha, silly americans.

Quoted for thruthery. You see, in the civilized world, 24h time is standard.

And isn't zulu time 24h GMT?

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2004-08-14, 2:57 PM #34

GBK

Posts: 10,562

I run everything on 36-hour time. Makes things easier.

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2004-08-14, 3:41 PM #35

DogSRoOL

wtf is a catloaf?a

Posts: 6,227

AM and PM are still better and less confusing than PMS. Be greatful, you jerk!

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For a healty meal, eat mashed potatoes, peas, and catloaf.
Massassi's cuttin' into my free time, man.
Valuable Life Lesson: Frog + Potato Gun = Blindness
Worship Examples - Christians' love for God should be seen and heard, not merely talked about. It is through actions that one is determined to be Christian, not through words. Words (and thoughts, as well) deceive even one's own self, but the heart speaks truth.

[This message has been edited by DogSRoOL (edited August 14, 2004).]

Cat loaf, meet mouseloaf.
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2004-08-14, 3:49 PM #36

SG-fan

Really a MacGyver fan.

Posts: 1,561

Just to throw something into your seconds-in-a-year calculations, time is relative [http://forums.massassi.net/html/wink.gif]

Try it, set 2 watches to the same EXACT time, leave one at home, take the other everywhere you go. Check the time after a few weeks. They WILL be off.

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2004-08-14, 5:17 PM #37

Delphian

It's crystal-clear to him.T

Posts: 2,647

Bah, Military Time rules. [http://forums.massassi.net/html/smile.gif]

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2004-08-14, 6:53 PM #38

Katt

Fear My Army of Kittens

Posts: 377

Quote:

Originally posted by SG-fan:
Try it, set 2 watches to the same EXACT time, leave one at home, take the other everywhere you go. Check the time after a few weeks. They WILL be off.

I'm pretty certain that if this is even the case at all, it's because of the slight differences in the construction of the individual watches. I don't believe that the effects of time dilation can be seen after just a couple weeks of driving around in your car.

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2004-08-15, 2:04 AM #39

Roach

Registered User

Posts: 5,275

Quote:

Originally posted by TheJkWhoSaysNi:
But clocks measure 24 hours in a day... the clocks would get ahead.

I made a happy picture to explain.
[http://blargh.mine.nu/test/202/81092570579.jpg]

On Earth 1, the red dot is where midnight is. The time it takes the Earth to make one complete rotation is 23 hours, 56 minutes, ~4 seconds (this is a sidereal day). But, the Earth moves to position 2 during the day, so where midnight was the night before, is no longer midnight, as the green dot is the new midnight. It takes a few minutes to rotate to the new midnight (which makes 24 hours, a solar day). As it moves to position 3, it takes 23 hours, 56 minutes, ~4 seconds to reach the green dot again, but the new midnight is still a few minutes away.

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[This message has been edited by Roach (edited August 15, 2004).]

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2004-08-15, 2:44 AM #40

Eric2Wonderful

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