Talk:Unit of time

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Tenth of a year

Is a decimonge is a tenth of a year? Is there such word for it?

Weird values for years

In the current version in the chapter List is written that:

A common year is 525 days (= 75 weeks)
A tropical year is 539 days
A Gregorian year is 546 days
A sidereal year is 553 days
A leap year is 532 days (= 76 weeks)

Where does these numbers come from? They don't fit to the rest of the article. In my opinion they are just wrong.

Correct should be:

A common year is 365 days (see head of article)
A tropical year is 365.24219 days (see Tropical year)
A Gregorian year is 365.2425 days (see head of article)
A sidereal year is 365.256363004 days (see Sidereal year)
A leap year is 366 days (see Leap year)

Can anyone check and fix this? If the values are correct, they must be explained to avoid confusion. --2A02:908:F21:3BA0:347F:3B67:85BD:7DC0 (talk) 13:25, 5 July 2024 (UTC)[reply]

Fixed. It was some very odd rascal. Remsense诉 15:57, 5 July 2024 (UTC)[reply]

Units not based on seconds

I suspect that there are countries and regions that developed small units of time other than hours, minutes, and seconds. They should be discussed in this article. Alanmoll (talk) 00:41, 9 August 2024 (UTC)[reply]

Great (Platonic) Year.

If there's a Galactic Year, there must also be a Platonic Year, based on the precession of the Earth's axis. It's approximately 25,772 years. 2.63.250.94 (talk) 09:54, 14 October 2025 (UTC)[reply]

We'd need a source for that value and we'd also need sources that justify its inclusion alongside the galactic year as a unit used in science. The quote from Otto Neugebauer in Great Year is apposite: "Almost any period can be found sometime or somewhere honored with this name." NebY (talk) 11:19, 14 October 2025 (UTC)[reply]

Is the name confusing you? It's not that important. The important thing is that the period is just as real as the Galactic Year.

Follow the analogy. A day is based on the Earth's rotation around its axis. А month is based on the Moon's orbit around the Earth, and a year is based on the Earth's orbit around the Sun. Same here too, the period is based on the astronomical cycle of the celestial body.

The precession of the Earth's axis directly affects the appearance of the night sky, the climate, and even the calendar (remember the difference between the tropical and sidereal year). Moreover, this influence is much more pronounced when compared to the Galactic Year. All sources can be found here. 93.178.114.201 (talk) 12:01, 14 October 2025 (UTC)[reply]