time counting system, divided into two parts: AM and PM
Wikipedia
en.wikipedia.org › wiki › 12-hour_clock
12-hour clock - Wikipedia
2 weeks ago - In English-speaking countries: "12 p.m." usually indicates noon, while "12 a.m." means midnight, but the reverse convention has also been used (see § Confusion at noon and midnight). "Noon" and "midnight" are unambiguous. The natural day-and-night division of a calendar day forms the fundamental ...
Reddit
reddit.com › r/nostupidquestions › is 12:00 am considered morning or night?
r/NoStupidQuestions on Reddit: Is 12:00 AM considered morning or night?
March 20, 2020 -
My uncle and I are arguing about whether 12 AM is considered morning or night. I'm not going to say which side I take so I don't skew the results. Hopefully y'all can solve this argument.
Top answer 1 of 11
8
Technically it’s morning. Not even an argument. My answer was purely based on the clock system. But I think the answer is actually a bit more complex depending on your location and time of year. After reading the definitions of Morning, Night, Day, Midnight, and AM/PM, my answer is that 12 AM can be Morning, Morning and Night, or Morning and Day. I do not believe 12 AM can solely be called Night based on the phrasing of your question. It seems like your uncle is conflating Afternoon (PM) and Night (period of time from sunset to sunrise). By definition 12 AM is the start of the morning hours or Ante Meridian. So by the clock system it’s Morning. The definition of Night is the period of time from sunset to sunrise. In many parts of the world during much of the year the sun has set when the clock strikes 12AM. Thus 12 AM is by definition both Night (no sunlight) and Morning (AM). There are parts of the world (think extreme North or extreme South) where the sun does not set for months. In these parts of the world, during these seasons of seemingly unending daylight, 12 AM is both Morning and Day. As Day is defined by the period of time from sunrise to sunset. If you really wanted to split hairs the final scenario that I can think of, is where 12 AM is simultaneously Midnight, Morning, and Night or Midnight, Morning, and Day. Depending on location, season, and the presence or absence of sunlight and the definition of midnight. Just don’t ask if 12 PM is considered Afternoon or Day.
2 of 11
4
Is both an option?
Is 12 PM at noon? How is that when 11 am is in the morning And 1 am is in the night. Where did the 12 am go?
12pm is noon, 12am is midnight. More on reddit.com
156
96
August 21, 2024As midnight is 12 a.m., midnight Friday is actually Friday morning and not Friday night.
Midnight is not 12am. Midnight and noon are neither am nor pm. That's why we have military time. 0000 is the midnight at the start of a given day, and 2400 is the midnight at the end of a given day. It's my pet peeve when people say 12pm when they mean 12 noon :) More on reddit.com
8
0
July 21, 2023the difference between 12:30am and 12:30pm
It's easy to confuse the 12:00 ... 12 :30 am ( for an example ) is 30 minutes after noon and ok they will arrive the airport at the afternoon and so missing the flight. They should have been been there at early morning( at midnight ) on that day. If we use the system of 24 hours clock is better for all to schedule the trip at any place in the world.. ... Saturday night my son is born after 12:30am which day will considered please tell me Saturday or ... More on preply.com
7
4
December 10, 202012.00am means midnight?
Yes, this is how it's done. I agree it's confusing. However: AM means ante meridiem ("before midday" in Latin) and PM means post meridiem ("after midday"). 12:00 of course is midday, so it doesn't really make sense for it to be AM or PM; however, as soon as we're past 12:00 (for example, 12:01) we are after midday, or "post meridiem" (PM). So for convenience's sake that one stray minute is also called PM, since the rest of the hour must be PM. To avoid confusion, many style guides suggest instead saying "twelve noon" and "twelve midnight". It's a similar concept to the 1800's being the nineteenth century and so forth. And I remember when Y2K happened, there were people saying, "Well, actually, the new millennium doesn't begin until 2001…" Edit: From the comments, it seems like you might be mistaken about how AM and PM are used in Spanish . More on reddit.com
81
4
March 20, 2025Is 12 AM morning or night?
12 A.M. is the first hour of the morning on a new day. 12 A.M. is also called midnight.
doodlelearning.com
doodlelearning.com › home › maths & english help for parents › what does am and pm stand for?
What does AM and PM stand for? | DoodleLearning
Which day is midnight on a day?
Midnight on any day is 12:00AM on the day after, so midnight on Monday is 12:00M Tuesday.
timewatch.com
timewatch.com › home › am pm explained. is noon 12am or 12pm? why are there 24 hours in a day?
AM PM explained. Is noon 12AM or 12PM? Why are there 24 hours in ...
Is AM used in the morning or night?
Morning AM is used to refer to the first half of the day, from midnight to midday, which includes all of the morning hours.
doodlelearning.com
doodlelearning.com › home › maths & english help for parents › what does am and pm stand for?
What does AM and PM stand for? | DoodleLearning
Videos
00:33
12:00 PM is NOT at night!!! Let's get it right: - YouTube
00:29
12 AM vs 12 PM – What’s the Difference? - YouTube
🕛 12 AM vs. 12 PM – What’s the Difference? 🔹 12 AM (Midnight) 🌙 – The very start of a new day! When the clock strikes 12 at night, it’s officially AM. 🔹 12 PM (Noon) ☀️ – Midday, when the sun is at its highest. This is when the clock hits 12 in the afternoon. 📌 Tip to Remember: AM = After Midnight (🌙 Night to Morning) PM = Past Morning (☀️ Afternoon & Beyond) Save this post ✅ and never mix them up again! ⏰
#TimeMatters #12AMvs12PM #NeverConfuse https://www.topupEnglish.com/ https://www.ttischool.com/ #TopUpLearning #Walk #online #onlineenglish #english #studyenglish #learnenglish #learnonline #CamdenTown #London #TtiSchool #kidsenglish #kids #topupspirit #leadingthechange #studyinlondon #talk24 #speakingclub | TikTok
00:15
12 AM or 12 PM? - YouTube
01:09
12 am or 12 pm?! Noon or Midnight? - YouTube
03:14
Difference between AM and PM - YouTube
The Guardian
theguardian.com › notesandqueries › query › 0,,-1752,00.html
Is midnight 12pm or 12am? | Notes and Queries | guardian.co.uk
Skip to main content · EITHER, since it is both 12 hours before and after noon. The real question is: what is mid-day
EnglishClub
englishclub.com › efl › articles › vocabulary › 12am-12pm-whats-the-difference
12am & 12pm – What’s the Difference?! | EnglishClub
I was taught the time ( incorrectly ) that AM meant morning and PM meant afternoon. To me 12:59 pm is a continuation of the night time measurement following on from 11pm , while 12:59am is day time measurement following on from 11am. Because we are using Latin in English we have this confusion.
NPL
npl.co.uk › resources › q-a › is-midnight-12am-or-12pm
Midnight - is it 12am or 12pm? - NPL
Another convention sometimes used is that, since 12 noon is by definition neither ante meridiem (before noon) nor post meridiem (after noon), then 12am refers to midnight at the start of the specified day (00:00) and 12pm to midnight at the ...
Timewatch
timewatch.com › home › am pm explained. is noon 12am or 12pm? why are there 24 hours in a day?
AM PM explained. Is noon 12AM or 12PM? Why are there 24 hours in a day?
October 31, 2025 - One minute before this must be 12:59 and as the sun is definitely before the meridian (ante meridien) in this 12 hour period, it must be 12:59 AM. So, the early hours of the morning are 12:01-12:59AM and midnight is therefore 12:00AM. Yet, is 12:00AM Tuesday midnight on Monday or midnight on Tuesday? Is it night or is it morning?
TimeAndDate
timeanddate.com › time zones › am and pm
AM and PM: What Do They Mean?
What do these abbreviations mean? Is midnight am or pm? When traveling in countries using the 12-hour clock format, like the US, you should learn the difference between am and pm. ... The 12-hour system divides the 24 hours of a day into two periods lasting 12 hours each.
Royal Museums Greenwich
rmg.co.uk › stories › time › noon-12-am-or-12-pm
Is noon 12 am or 12 pm? | Royal Museums Greenwich
When they say 12am, they normally mean 12 midnight. While some people follow this convention, technically it's not quite right – as you'll see from the definition of am and pm below.
DoodleLearning
doodlelearning.com › home › maths & english help for parents › what does am and pm stand for?
What does AM and PM stand for? | DoodleLearning
October 20, 2023 - AM refers to the first 12-hour period while PM refers to the second. Twelve-hour time uses AM and PM to distinguish between the first half of the day and the second half. Meanwhile, 24-hour time doesn’t require distinguishing markers because hour numbers aren’t repeated.
Quora
quora.com › What-time-is-12-00-am-night-or-morning
What time is 12:00 am night or morning? - Quora
Answer (1 of 10): Technically there is no 12:00 AM, its either midnight or noon. Because 12:00:00.001 or immediately thereafter is AM, most computer time logging and entry will consider and display midnight as AM. A related question is at midnight is it yesterday or tomorrow? i.e. you’re up sat...
Reddit
reddit.com › r/englishlearning › is 12 pm at noon? how is that when 11 am is in the morning and 1 am is in the night. where did the 12 am go?
r/EnglishLearning on Reddit: Is 12 PM at noon? How is that when 11 am is in the morning And 1 am is in the night. Where did the 12 am go?
August 21, 2024 -
I was talking to a native speaker (American woman ) and she corrected me as I was talking to her that 12 PM is the one in the day time not 12 AM. I don’t know if I have had it wrong all my life or what.
Scribd
scribd.com › document › 660268037 › 12-in-the-night-is-am-or-pm-Google-Search
12 in the night is am or pm - Google Search
1 week ago - 12 AM denotes midnight and 12 PM denotes noon. While noon is neither AM nor PM, 12 PM is commonly used to refer to noon. AM stands for ante meridiem (before midday) and PM stands for post meridiem (after midday).
Reddit
reddit.com › r/showerthoughts › as midnight is 12 a.m., midnight friday is actually friday morning and not friday night.
r/Showerthoughts on Reddit: As midnight is 12 a.m., midnight Friday is actually Friday morning and not Friday night.
July 21, 2023 - The entire world doesn't use the 24hr clock in every instance, and when using a 12hr clock indicating am or pm is necessary. Re. the OP, yes 12am is the morning of the 'next day', that's also common knowledge.
Preply
preply.com › home › english › the difference between 12:30am and 12:30pm
the difference between 12:30am and 12:30pm | Learn English
Wouldn't it be better to actually ... hour clock and then there is no confusion what so ever because everyone should know that 00:00 is midnight and 12:00 is midday, thus 00:30 is 30 minutes past midnight and 12:30 is 30 minutes past mid-day or half twelve (as the English would ...
Published December 10, 2020
Cuemath
cuemath.com › measurement › am-pm
AM and PM - Meaning, Full Form of AM PM | Relation with 24-Hour clock
Thus, 8 PM refers to 8 o'clock in the late evening or night. 12 PM is noon whereas 12 AM is midnight. And if it refers to noon, it means 12 p.m. Yes, 12 AM refers to the time of midnight when the clock strikes 12. 12 noon refers to the time which is neither AM nor PM.
Quora
quora.com › Why-do-we-have-12-00-AM-and-12-00-PM-for-midnight-and-noon-and-what-s-the-correct-way-to-write-them
Why do we have 12:00 AM and 12:00 PM for midnight and noon, and what’s the correct way to write them? - Quora
AM and PM cannot be applied to either noon or midnight. 12 o’ clock in the middle of the day is simply “noon”, and 12 o’ clock in the middle of the night is simply “midnight”. No AM or PM applies or is used.
Reddit
reddit.com › r/englishlearning › 12.00am means midnight?
12.00am means midnight? : r/EnglishLearning
March 20, 2025 - A.M. is everything from midnight to noon, so yes midnight is 12 A.M. and then we go around the clock until we hit 12 again and switch to P.M. at noon. All that considered, you typically don't need to specify am or pm when actually speaking English, as the majority of the time context will imply ...
Scribd
scribd.com › doc › 151468442 › Day-and-Night
Day and Night
Every day starts precisely at midnight. AM (Ante-Meridiem = before noon) starts just after midnight. PM (Post-Meridiem=after noon) starts just after midday. This means that 12am and 12pm have no meaning.
Reddit
reddit.com › r/nostupidquestions › if 12 am is midnight, why is 12 pm noon? shouldn’t “am” stand for after midnight and “pm” after morning?
r/NoStupidQuestions on Reddit: If 12 AM is midnight, why is 12 PM noon? Shouldn’t “AM” stand for after midnight and “PM” after morning?
May 20, 2025 -
It feels backwards—12 noon is exactly halfway between midnights, but we call it PM. Wouldn’t it make more sense for 12 noon to be AM, since it’s before the second midnight?
Top answer 1 of 5
7
AM stands for "ante meridiem", which means "before midday" and PM stands for "post meridiem", meaning "after midday."
2 of 5
2
The abbreviations come from Latin. AM = Ante Meridiem, PM = Post Meridiem. "Meridiem" (meri: middle, diem: day) is noon, and ante/post are before/after respectively. So AM is before noon and PM is after noon. 12-noon exactly is neither before nor after noon, but 12:59 and 12:30 and 12:01 are all after noon, so the "12" hour as a whole is treated as PM. It does look a little weird for the count to go "10am, 11am, 12pm, 1pm" rather than the 12 having the same suffix as the 11 before it. That's an issue with having numbering indexed from one instead of zero. If the clock went "11am 12am, 0pm, 1pm" (with 0:00pm being the moment of noon, and 0:00am midnight) then it would make sense again. But counting from zero is a newer idea.
Reddit
reddit.com › r/grammar › what day is midnight?
r/grammar on Reddit: What day is midnight?
April 4, 2023 -
When someone says “I have a flight to catch on Monday at midnight.” do they mean the 12am between Sunday and Monday, or the 12am between Monday and Tuesday?
I think it depends on what time does the day actually start. I believe it’s 12:00am. So I’m thinking “on Monday at midnight” is the beginning of the day on Monday right after Sunday. But it sounds weird because the word “midnight” seems to have a very late connotation to it rather than actually being early. I’m not sure, but I would think that’s why actual flight times never fall on 12:00 on the dot to avoid confusion.
Top answer 1 of 13
52
It's highly ambiguous. Some industries, notably the North American railway industry, never schedule anything for precisely midnight. Instead they use either 23:59 or 00:01.
2 of 13
22
Personally, I interpret it as midnight between Monday and Tuesday, but if I had to say that I would immediately clarify anyway and assume most people would too.