Talk:Computus
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I do not like the title of this page. It is too long and I never get the small words and capitalization quite right; the capital 'E' is un-Wikipedia anyway. I propose to re-name this "Computus", for the medieval term of this craft. -- Tom Peters 25-Jul-2003 21:52 UTC
Tom has changed the text on the assumption that the age of the moon must be real (not whole) number. This need not be the case in the English language at least. Applying this assumption causes the text to be more complicated as a result.
How old is Tom? What is Tom's age? 35.767 or 35? (not actual age).
So I think the age of the moon in days as a whole number is a valid concept (in English at least) and could be retained on this page for simplicity. Perhaps the Dutch language does not allow whole number for its equivalent to age. -- Karl 1-Aug-2003 09:45 UT
- Uhm, where does this apply? -- Tom Peters 12-Aug-2003 21:07 UTC
I'm referring to the change on 31 July "TP: elaborations on epact<->dayte in lunar year<->age of Moon. Could be explained without reference to "age" (continuous real number), but only "day of month" (ordinal number).) " concerning the section Some Theory. I've just made a small change there that should clarify the moon age references. -- Karl 13-Aug-2003 09h UT
- I disagree with your insertion "(moon age 0 at solar new year's day)". The intention is to start the lunar year at the same time as the solar year, i.e. the date (ordinal number) is 1. The epact is 0. The epact is the difference in date between the lunar and solar year. This is equivalent to the age of the Moon, but that is secondary. Anyway, the age of the Moon on 1 Jan. is 1, not 0 (hence the tedious explanation of epact as the age of the Moon on the day before the solar year starts). Think of it as the crescent Moon, which marks the 1st day (ordinal number) of the month, being already (at least) 1 day old. This is also what I state in the 2nd par. in the section on the Gregorian computus; your insertion is in conflict with that text. -- Tom Peters 12:31, 13 Aug 2003 (UTC)
I disagree with Tom's assertion that the age of the moon is 1 on new year's day when the epact is 0. This contradicts the first paragraph of the Catholic Enclopaedia article. Referecenced in Epact. Also the New Moon in this context is always the First Cresent and the astronomical new moon does not come into this. SeeTalk:Epact. -- Karl 15 Aug 11h UT.