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Reddit
reddit.com › r/time › what times (hours) of day do you consider to be “morning”, afternoon”, “evening”, “night”, etc?
r/Time on Reddit: What times (hours) of day do you consider to be “morning”, afternoon”, “evening”, “night”, etc?
October 24, 2025 -

As the title says. My daughter and I were having a conversation earlier, and she asked me to order something from Amazon; I was busy so I told her “please remind me this afternoon”. She responded by telling me it is already afternoon (it was 12:10pm). So this made me start to think about times of day and if there is a standard, so I googled it and that was useless because it was kind of all over the place or not specific enough… no real standard definition that I could find.

I would like to preface this by saying this is how I personally reference the different “time periods” throughout the day, it has nothing to do with any proper definitions or scientific research, this is just how I, myself, will reference the different time periods throughout the day :)

So I’m thinking maybe everyone kinda has their own personal “range” they use for specific times of the day? Anyway, I thought it would be fun to see what hours everyone else uses/considers to be morning/noon/afternoon/evening/night/early morning etc or whatever … so here’s mine:

Ok, so to me… (and this is just how I personally define the times of day, when I’m speaking about morning/noon/night etc) goes kind of like this:

morning is like 5am-12pm noon, noon is like 11am-1pm, afternoon is anytime between 1-5pm, evening is between 5-9pm, nighttime is after 9pm til like 2am, then it’s early morning from like 2-5am. So, for example, if it’s like 11am, and I ask my daughter “will you please remind me this afternoon”, I usually mean sometime between 1-3pm, but if I say “will you please remind me later this afternoon” that usually means anytime between 3-5ish pm.

am I psycho? Or does everyone have like a set period of time (in hours) that they kind of use to describe the times of day?

TLDR: What hours of the day do you consider when referencing the different time periods throughout a 24 hour period? For example: Morning/Noon/Afternoon/Evening/Night/Late Night/Early Morning

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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
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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.
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Is both an option?
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Reddit
reddit.com › r/changemyview › cmv: it would make more sense for 12 pm to be midnight and 12 am to be noon
r/changemyview on Reddit: CMV: It would make more sense for 12 PM to be midnight and 12 AM to be noon
June 25, 2023 -

Okay so first of all, I'm not from the US or UK, so I never used PM in my day to day life. I also believe that a 24 hour system is far superior to the AM PM system, so that isn't going to change my view. I also do not think changing the system this way now makes sense, as it would probably take too much effort.

What made me make this post is a viral Twitter image that made fun of people for not knowing which of four options are closest to midnight: 11:55 AM, 12:06 AM, 11:50 AM, 12:03 AM. The correct answer is D, but it confused a lot of people, and I can fully understand why.

My arguement for why it would make more sense to switch the two is that currently the morning times go: 12 1 2 3... 9, 10, 11. And then it switches to evening and once again starts with 12 and then 1. It would make a lot more sense to have it be 1 AM - 12 AM and then 1 PM - 12 PM. The only reasonable arguement I can see against this is that 12:30 PM would be in the next day so to speak, so it would make more sense to call ot AM. But then call it 0:30 AM to avoid the confusion of starting over. Is this just some ancient holdover from a numbering system that didn't have 0?

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Reddit
reddit.com › r/explainlikeimfive › eli5: why is midday usually represented as 12pm rather than 12am?
r/explainlikeimfive on Reddit: ELI5: Why is midday usually represented as 12pm rather than 12am?
January 3, 2026 - AM (Ante Meridiem) = before noon PM (Post Meridiem) = after noon The reference point for the system is noon, not midnight. Noon is literally the middle of the day, and midnight (12 AM) is literally the middle of the night.
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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.
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Reddit
reddit.com › r/time › is 12:01 am technically morning?
r/Time on Reddit: Is 12:01 AM technically morning?
February 5, 2022 -

My wife gets on me sometimes because I go to bed at 12:30 or 1 or 1:30 and I say “goodnight” to her and she jokes “well technically it’s morning”. I try to argue that night technically is from sunset to sunrise but she says once the clock hits 12:01 am it’s morning and tells me to look up AM and PM. Help!

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Reddit
reddit.com › r/answers › is midnight 12am or 12pm?
r/answers on Reddit: Is midnight 12am or 12pm?
March 15, 2018 - It's AM. PM is noon. Reply · reply · cruddy_mccrudderson · • · 12am hence mid-night ... middle of the night. Noon, or 12pm is also referred to as midday in some regions · Reply · reply · Cruddlington · • · I think of it as 12 past ...
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Reddit
reddit.com › r/explainlikeimfive › eli5: 12am is midnight?
r/explainlikeimfive on Reddit: ELI5: 12am is midnight?
December 24, 2018 -

I feel like there's weird maths thing that makes this all make sense but i can't wrap my head around it.

Why is 12 am midnight?

I feel like that makes it really weird because it means that the am's go from 12am to 1 am to 2 am, etc and like shouldn't it start at 1 and go to 12? Same thing with the pm's like it goes from 11pm then 12am? Shouldn't it be 11pm then 12pm??