Noon is 12pm or 12am

This will reduce any confusion for your reader.

The AM PM 12 hour time format can be confusing. When is AM Tuesday? Is it midnight on Monday, Tuesday noon, or Tuesday midnight? You would not be the first person to disagree or be confused. We asked people and received three answers to this question. You might be interested to know that there are no established standards for the meaning of AM nor PM, but there are answers. You may think you know, but you may not be right.

Noon is 12pm or 12am

We will also see some other useful words and phrases that can crop up when we need to tell the time, or ask what the time is. OK, but what if someone talks about something happening at midnight on Tuesday? Is that 12am or 12pm. Is it the night between Monday and Tuesday or between Tuesday and Wednesday? Some will say midnight is 12am , and therefore that midday or noon is 12pm. When we talk about midnight last night or midnight tonight, the meaning is clear ; but less so when we talk about, for example, midnight on Sunday. Is that at the beginning or at the end of Sunday?! I should be home by midnight Saturday night. The last bus arrives just before midnight on Friday nights. In English, do we use the hour clock or hour clock? In other words, do we say for example 2pm or ? In general conversations and situations in English, we use the hour clock format.

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Simple right? When most people say 12pm , typically they're talking about the middle of the day: 12 noon. 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. To avoid any confusion and to make sure you arrive on time , it might be best to say 12 noon or 12 midnight instead. Alternatively, you could use the hour clock system, where is noon and or is midnight. Noon is therefore neither 'ante' am nor 'post' pm meridiem.

Simply use the words noon and midnight instead of 12 a. On the hour clock, both and are midnight, indicating the start and end of a day. Prefer to show time frames using and to avoid confusion about which day is being referred to. Noon is on the hour clock. Midnight is when the hour period of a day ends and a new day begins.

Noon is 12pm or 12am

This will reduce any confusion for your reader. Noon is universally acknowledged as midday or the twelfth hour after midnight. In the 24 hours of the day, noon is at the beginning of the twelfth hour, whereas midnight is the precise moment one day ends and the next day begins.

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Have they used the hour clock in other parts of the conversation or document? Think how many computer operations could take place unnoticed in that no-man's land of a whole second second! Likewise, some U. What do reputable businesses, web sites and software use? Retrieved 27 January Minutes past the hour means those minutes are added to the hour; "ten past five" means Oxford University Press. Originally there were two cycles: one cycle which could be tracked by the position of the Sun day , followed by one cycle which could be tracked by the Moon and stars night. One way around this conundrum is to use a different way of communicating the time. However, the 12 hour clock format is ambiguous. In reality midnight has no sooner been reached than it has been passed.

We will also see some other useful words and phrases that can crop up when we need to tell the time, or ask what the time is.

Because the Earth takes a little over days to orbit the Sun, we need to make adjustments to keep the seasons from drifting: leap years and even leap seconds. How does the 12 hour clock time format work? Not everyone uses the hour clock, though. What do you think Mr. Main types astronomical astrarium atomic quantum hourglass marine sundial watch mechanical stopwatch water-based Cuckoo clock Digital clock Grandfather clock History Timeline. How does this tell us if noon is a. If you want to use p. For example, can be written as hr. In general conversations and situations in English, we use the hour clock format. Is there an authority on the subject?