Why Do We Measure Time in 12 Months and 12 Hours?

  • Thread starter Thread starter Vectory
  • Start date Start date
AI Thread Summary
The discussion centers on the arbitrary nature of time measurement, questioning why we adhere to a 12-month year and a 24-hour day. It highlights that there is no inherent reason these divisions couldn't be different, referencing historical movements advocating for decimal time systems, such as 10 months in a year or 100 seconds in a minute. The conversation suggests that the current system is rooted in practicality, as divisions of 12, 24, and 60 allow for easy subdivision into smaller increments. Historical influences from ancient civilizations, particularly the Romans and Babylonians, are noted as contributing factors to the calendar structure we use today. The thread emphasizes the importance of understanding the historical context behind our timekeeping systems.
Vectory
Messages
11
Reaction score
0
This is as I would describe it beyond what has become the norm that dictates how we define our lives in This world. Why does there have to be 12 months in a year and 2 12 hour divisions between night and day instead of some other length of duration such as 14 or 13?
 
Last edited:
Physics news on Phys.org
Your question is not really appropriate to this section which applies to scientific theories of elementary particles beyond the Standard Model. Your question should rather be posted under Philosophy or General Discussion.

But to answer your question, firstly there's no reason it couldn't be otherwise and there have been in past "decimalization" movements suggesting alternatives especially 100 "seconds" to a "minute" etc, and 10 months to a year. See http://en.wikipedia.org/wiki/Decimal_time" in wikipedia and check out the related topics.

You're question would be better answered if you did a little history research and contemplation as to why we have the systems we currently use.

One common reason for using divisions of 12, 24, and 60 parts is it is easily divided into small increments, i.e. halves, thirds, quarters, and sixths, etc.
A 24 hour day for example is useful in dividing watches on ships into 6 four hour watches, http://www.boatsafe.com/nauticalknowhow/shipbee.htm" . That'd be tougher with say a 17 "hour" day.
 
Last edited by a moderator:
i'm guessing 'the ancients' had a month for each zodiac and by the time we reched the roman calendar, the months shifted a bit
 
The romans (and ancient babylonians, I think?) had some obsession with multiples of 6. That's really all there is to it.
 
"In 2013, after a series of hospitalizations due to magnets, New Zealand government officials permanently banned the sale of those made from neodymium-iron-boron (NIB)." https://www.sciencealert.com/new-zealand-teen-loses-part-of-his-bowel-after-swallowing-nearly-200-magnets "A 13-year-old boy in New Zealand has had part of his bowel surgically removed after he ingested nearly 200 high-powered magnets. (2025)" OK, this teen was a fool, but it is not always a teen, it is not always...
Thread 'RIP Chen Ning Yang (1922-2025)'
https://en.wikipedia.org/wiki/Yang_Chen-Ning ( photo from http://insti.physics.sunysb.edu/~yang/ ) https://www.nytimes.com/2025/10/18/science/chen-ning-yang-dead.html https://www.bbc.com/news/articles/cdxrzzk02plo https://www.cpr.cuhk.edu.hk/en/press/mourning-professor-yang-chen-ning/ https://www.stonybrook.edu/commcms/physics/about/awards_and_prizes/_nobel_and_breakthrough_prizes/_profiles/yangc https://www.stonybrook.edu/commcms/physics/people/_profiles/yangc...
Back
Top