10 Am To 9pm Is How Many Hours

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NOOKS AND CRANNIES

Is midnight 12pm or 12am?

EITHER, since information technology is both 12 hours earlier and later on noon. The real question is: what is mid-mean solar day?
John Hawthorne, Crawley, Due west Sussex.

MIDNIGHT is 12pm. I must recognise the difference between points in time and periods of time. Midnight is the zip point in time when nosotros get-go to build upwardly 24 one-hour periods of time to make upwards a new solar day. So midnight is the point 0am. After a period of ane 60 minutes we reach the signal in time called 1am, and subsequently 12 periods of i 60 minutes nosotros reach the indicate called apex. At noon the 13th one-60 minutes period starts, ending at point 1pm. This process continues up to the point 11pm when the 24th period of one hour starts. This period ends in the middle of the night, 12 hours afterwards apex at the point midnight or 12pm.
Geoff Berriman, Sandal, Wakefield.

WHEN I was in the RAF l years ago this problem was solved by defining it out of existence. Working on the 24-60 minutes clock meant that there was no difficulty with midday - 1200 hours - merely the Air Force could not countenance 0000 hours for midnight. Nosotros were instructed that the Air Forcefulness day began at 0001 hours and ended at 2359 hours. The two minutes between were ours to utilize equally we liked.
James Eedle, Black Hill, Victoria, Australia.

Every bit IS clear from consideration of the literal meanings of am and pm, noon is 12m, while 12am and 12pm have equal claims on midnight. We tend to avoid 12m nowadays from fearfulness that someone may think g stands for midnight, just in avoiding this defoliation we have been thrown into worse confusion past trying to make up one's mind which of 12am and 12pm to assign to noon and midnight.
Ron Knight Chapel Colina, North Carolina, USA.

EXACTLY one 60 minutes subsequently 11 Mail Meridiem comes 12 Mail service Meridiem. Every bit information technology is dark then, I've e'er supposed it is midnight.
Denis Buckley, Darwin, Australia.

NEITHER, in the strict meaning of the words. Merely 1 minute later midnight (12.01) is unquestionably am. Hence for consequent usage, 12am must hateful midnight.
Adrian Pollock, Yardley, Pennsylvania.

GEOFF BERRIMAN may be technically correct (which doesn't mean I'm agreeing with his strange theory), only in the real earth he is incorrect. Regardless of thoughts almost points in time, 12.01, just after midnight is nigh definitely, and unarguably 12.01am. 12.01 just after noon is similarly 12.01pm. Besides, an event that starts at 11.00pm and goes on until 11.01am has lasted over 12 hours, whereas an upshot that starts at 11.00pm and goes on until xi.01pm has lasted only i infinitesimal. This means that a meeting that starts at 12.00pm and goes on until 12.01pm must have lasted one minute (the alternative would requite computer systems worldwide a bigger trouble than the millennium bug). Therefore, 12.00pm must be at apex. QED. (Effort booking some meetings, lunches etc at 12.00am and run across the result.)
Phil Benjamin, Enfield, Middx.

WHEN I was in the RAF fifty years ago, this problem was solved by defining information technology out of existence. Working on the 24-hour clock meant that in that location was no difficulty with midday1200 hours - simply the Air Forcefulness could non countenance 0000 hours for midnight. We were instructed that the Air Force twenty-four hours began at 0001 hours and concluded at 2359 hours. The 2 minutes betwixt were ours to use as we liked.
James Eedle, Black Hill, Victoria, Australia.

I am appaled at the rubbish I take read on this bailiwick. There is no genuine defoliation nor ambiguity merely a self-made 1. As the twenty-four hours begins at midnight, midnight must be 12am. The moment of noon is in the offset second, consequently infinitesimal and hour of the afternoon therefore noon must be 12pm. It is poppycock to say that 12am and 12pm do not exist by considering the moments of noon and midnight within their ain right - in one case the measures they vest to become articulate, any supposed confusion vanishes.
Mr Graham J Mayer, Epsom England

Further to my previous comments, I am DISGUSTED at the ignorant statements that midnight has equal claims on AM and PM - HOW CAN MIDNIGHT Exist PM OF A DAY TO WHICH IT DOES NOT Belong - information technology MUST be 12am as it clearly belongs to a NEW day - the fact that the hour changes from ll.59pm (one minute before midnight) to 12.00 proves that the new hour must exist either still in the same solar day or the new day - information technology MUST exist the first hr of the new twenty-four hours, the previous twenty-four hours finishing at 11.59pm. in hr/infinitesimal language and ll.59.59pm in 60 minutes/infinitesimal/2d language.
Mr Graham James Mayer, Epsom England

Further to my previous comments, I am DISGUSTED at the ignorant statements that midnight has equal claims on AM and PM - HOW Can MIDNIGHT BE PM OF A Solar day TO WHICH Information technology DOES Non Vest - it MUST be 12am every bit information technology clearly belongs to a NEW day - the fact that the hour changes from ll.59pm (one minute before midnight) to 12.00 proves that the new hr must exist either still in the same twenty-four hour period or the new day - it MUST be the first hour of the new twenty-four hour period, the previous day finishing at eleven.59pm. In hour/minute language and ll.59.59pm in hour/minute/second language.
Mr Graham James Mayer, Epsom, England

What a load of nonsense! 12am and 12pm are both mathmatically and logically inadmissable. 12 noon and 12 midnight are the only true values. However, for those who must use this notation, take a look at your digital clock dislay (12hr). When information technology changes to 12 apex information technology shows 12pm! And at midnight 12am! So for you freaks that must utilise an ambiguous annotation surely this is the very thing. ie 12pm = noon 12am = midnight
Bob Fisher, Rainham, Kent

12am and 12pm are both incorrect. Neither should exist used. Y'all should really pay attention to the abbreviation. "a.grand." means "ante meridiem" which means "before midday" and p.m. ways "post meridiem", which means "afterward midday". Consequently to use am/pm to refer to midday, (12noon) is simply wrong (and similarly midnight). The correct terms are 12 noon and 12 midnight, with times in between using am/pm.
Colin Jones, Aberdeen, Scotland

If midnight is 12am ('Dues'= earlier 'MERIDIEM'= noon), then it follows logically that one hour later should be 11am, 2 hours later on should be 10am, etc. Our electric current 11am would be 1am, closely followed past noon which would exist 0am or 0pm (either - think 'noon' as in 'none'*). 1pm, 2pm, etc would exist as now. Midnight would exist 12am or 12pm (either). Past counting frontward then backwards in time, nosotros might finish getting older. *Actually 'noon' comes from 'nine' run across www.etymonline.com :-D
Phil Swallow, Lydbrook UK

12:00 is noon 24:00 is midnight
John henschel, Surrey B.C. Canada

WELL DONE! Absolutely the correct answer from Colin Jones, Aberdeen, Scotland. Why are poeple SO LAZY or ignorant that they need to avert the use of 'noon or midday' and 'midnight' as Articulate descriptions of time. Midnight needing to exist qualified further as the end or beginning of a particular day. Worldwide adoption of 00.00 and 24.00 would help enormously!
Stanley Sutcliffe, Halifax Britain

If we use the war machine time equally our basis for this statement and for the sake of statement say that 2400 is midnight then we can just answer this question using common sense math skills. Do we start counting at 12 or 24? No we don't. Practise we believe that there is actually a fourth dimension known as 00:00:00. Most people I know would say that this time does not be or that doomsday is here if we were on that moment. Therefore the 24-hour interval begins with 00:00:01 (where we naturally start counting from). Using this argument I believe 12 noon to be 12am as information technology is the cease of the morning. 12 midnight is 12pm or the end of the evening. If we take this to be true so nosotros can come across that military time as information technology is known uses 2400 because it is the end of that day and a full 24 hours otherwise why don't all of our clocks say 00:00:00.
Michael Vandiver, Leeds, AL U.s.

Let'due south wait at a nasty instance. My bank sent me a message this calendar week request me to pay in funds past 12pm on 12th June to avoid charges. I paid in at iii.07pm on 12th June and nevertheless got a charge because they say three.07 pm is afterwards 12pm! I called them and they have waived the accuse, merely all the same insist that 12pm is midday.
John Griffiths, Norwich Norfolk

Both 12am and 12pm are precise moments of fourth dimension. 12am is the verbal moment the twelfth hour of the morning finishes (am), and similarly for pm. Therefor 12am is midday and pm would start straight afterwards. The confusion has started since the invention of the digital clock.
David Sulivan, Carshalton, Surrey

My opinion: Midnight is neither 12pm nor 12am. Why? Well, I think of it this way: Midnight is an exact moment, the border, between the period of time after noon of the mean solar day ending (pm) and the catamenia time before apex of the twenty-four hours beginning (am). I recall of am and pm as periods of time between midday and midnight and not inclusive of them. An analogy would be the question: Is 5, >five or <5? Of course it is neither. And though this concept is more obvious for apex, the same is truthful for midnight. When midnight strikes the digital clock is irresolute and the brandish says neither am or pm. And so all yous night owls, set your meetings for "12 midnight", "00.00" or if you must 12.00.01am.
Alec Hendeson, Guildford, UK

All this nonsense virtually using the terms 'mid-24-hour interval' & 'mid-night' instead of A.M. or P.Thou is ridiculous. The statement that it is both ante and mail service midday does non concur. Information technology is only both considering you are using two days instead of the specific day y'all are talking about. 12am Monday is midnight Monday morning. Information technology is A.G. (before mid-day Monday). To fence that it is also P.M (post mid-twenty-four hours) is irrelevant because it is but post mid-day Sunday not Monday. If you say 12am Monday at that place is no reason to confuse the P.M. of Dominicus...this only adds to your confusion and ignorance.
alex , Crawley Britain

My Opinion: 12 tin exist neither am nor pm. This applies to both 12s. I agree wholeheartedly with Alec Hendeson of Guildford UK and I recollect his illustration of <five or >5 is relevant here. Is there an say-so on the discipline? I would refer readers to http://wwp.greenwichmeantime.com/info/noon.htm Is there a solution to all the confusion and differing opinions? Yep... Do as GMT suggests: Use 'noon' and 'midnight' or 12:00 and 23:59 & 00:01 instead of 12am/pm. At least at that place volition exist no confusion then.
Jules Smibert, Aureate Coast Australia

Every bit we normally count hours numerically adding 1 to the previous hour and every bit in a normal sequence 12 comes after 11 if it is then 11pm midnight must exist 12pm and at the same time 00.00am and so 1 infinitesimal by midnight is 00.01am the same applies to noon 11am being followed by 12am and at the same time being 00.00pm.
Ian Jenks, Ampthill UK

Alex, surely yous could argue that the day does not showtime at 24:00? It starts at 00:00:01, which would mean that 12:00 would exist 12am and and so 24:00 would be 12pm. It depends how y'all classify a day, if it runs from 00:00:01 until 24:00:00 then 12am is noon and 12pm is midnight. If it runs from 00:00:00 until 23:59:59 then 12am is midnight and 12pm is apex, but surely we all agree 00:00:00 is not a time?
Harris Boyle, Coventry UK

Of course 00:00:00 is a time, it is one second before 00:00:01. Remember how many figurer operations could have identify unnoticed in that no-man'southward state of a whole 2d second! 12:00pm Dominicus nighttime is the same time as 00:00am Mon forenoon. Merely make sure you specify the appropriate day.
Rob Corne, Auckland New Zealand

Jules Smibert is right. Midnight and midday are neither am or pm (every bit explained in the GMT link he provided). Bones calculus explains the concept well (run into http://www.themathpage.com/acalc/infinity.htm). As 'x' approaches zippo it never actually gets in that location just as it reciprocal never reaches infinity.
Gary Reid, Wollongong Australia

Midnight is neither 12pm or 12am, at that place is no such time. Midnight is 12 midnight and mid-twenty-four hours is 12 apex. All other usage is sloppy. As ane respond says the military utilise 23:59 and 00:01
George Redgrave, Crawley Britain

The disagreement about midnight stems from the fact that it is a boundary betwixt ii days. 24:00:00 Monday and 00:00:00 Tuesday are both correct and both refer to the aforementioned moment. There is no reason to prefere ane over the other except a desite for standardisation. Following this, information technology is obvious that this same moment in time can also be called 12pm Monday (considering it is 12 hours after the Monday meridian) or 12am Tuesday (considering it is 12 hours before the Tuesday tiptop). The very fact that both of these positions can be defended is reason to never use either. Similarly, noon is the meridian and is therefor neither am nor pm. We just call information technology 12 o'clock because of the number on the dial. There is no logical reason why this number cannot be replaced with a zero.
Yet Another Geek,

I would refer y'all all to http://www.thaivisa.com/forum/topic/645370-12-am-and-12-pm/
Jim Mills, Phuket Thailand

12 noon tin be neither 12 am (in English language before noon) nor 12 pm (after noon). It is simply noon. Since nosotros practice non notate time backwards, 12 midnight is non 12 am, since information technology would then require i am to become eleven am and and so on. Similarly since it is the fleeting instant that marks both the end of one day and the beginning of the side by side (it belongs to both days and to neither),information technology is non 12 pm. In reality midnight has no sooner been reached than it has been passed. The phrase "the stroke of midnight" is apt. As has been demonstrated by many of the previous answers, and considering it is incorrect, the use of 12 am and 12 pm is inherently confusing. To avoid this defoliation information technology should be ended. The apply of apex and midnight informally or 12 noon and 12 midnight or 1200 and 2400 should become exercise.
Bernard Maguire, Glasgow Scotland

I have had fun reading all these answers. However, I have ever held the fact that 12pm is apex. Example: Counting in minutes, you would have 10:58am, 10:59am, eleven:00am, 11:01am etc. Therefore it stands to reason you would take: eleven:58am, eleven:59am, 12:00pm, 12:01pm. It would just exist odd to accept: 11:58am, 11:59am, 12:00am, 12:01pm ... e.one thousand. 12:00am for simply ane millisecond just doesn't make sense!
John Woods, Sheffield, England

Use 12 midday or 12 midnight for clarity. In my cervix of the woods the usage is actually a logical counting upwardly 9pm to 10pm to 11pm to 12pm ie counting up 12pm is MIDNIGHT 12 am is MIDDAY Fraction of a 2d practise count logically 12 midnight is 12pm 12.00.01 is 12.00.01am It does of course depend on YOUR detail logic. It is easy to phone call others morons.
T Brophy, St Helens U.k.

Actually, Midnight is 12.00 AM (non 12.00 PM). Please read through the Clock System tabular array in the beneath link: http://en.wikipedia.org/wiki/12-hour_clock
Dilli Rajan, Chennai Bharat

Information technology is very interesting reading all these comments. We need to realize that a clock gives us a means of reading fourth dimension. Time is a fluid, always irresolute value. It is never what the clock says it is. Noon and midnight are for a infinitely pocket-sized menstruum of time equally is any number on the clock represents. An instance is the only clock that is correct is the one that is stopped. It gives the right time twice a twenty-four hour period. A running clock is always wrong. Past the time we expect at a clock that tells us it is apex, information technology is by noon and the same at midnight. So where does that exit usa? When the time reaches apex, information technology is PM. When the time reaches midnight, it is AM. An analogue clock does not misfile, because our encephalon knows what information technology is telling the states. The digital world we live in is trying to precise and yet information technology is not. To try to correspond time in a digital fashion, we must realize that apex and midnight are only words. Our digital clocks should not say 12:00 AM or PM. The need to say midnight or apex. And the same goes for the written time. As one note said, when the clock say 12:00 and you run across that it is dark out or, if you have non windows, you remember information technology was evening the last time to checked, it must exist close to midnight not noon. Some common sense needs to be used somewhere in here. I personally will not wear the digital watch, because it gives me the faux feeling that it is exact. I accept never worn a watch that gives me the exact fourth dimension.
Bob Simons, Cameron, USA

By technicality, mid-day and midnight exist for only a fraction of a 2d. By this assumption whatever time from 12:00:00:00:00:01 pm, (hour:minute:second:millisecond:microsecond:nanosecond note) is after mid-day -I tin can't be bothered going smaller than that- 12pm, past this definition is "mid-day"
Ben Wallace, Wellington, New Zealand

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