the month[s of jan apr jul oct]
ie what is the neatest fit that could be arranged, and what would that equate to in the number of days you would have to delete from one year to achieve the optimum fit?
at present they fall on the 21st or 22nd of the month, so my quick rough maths says it would be somewhere in the region of 10 days.
who can work this out and show me the best fit?
2007-12-20 22:53:43 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
why are the answerers so dim!
its simple...
at present solstices and equinoxes fall on or around the 21st.
if we wanted the dates to shift so they lined up and synchronised with the start of the months of jan,apr,jul,oct....instead of falling on the 21st['ish!] of each month..what is the best fit that could be arranged?
[this takes into account that you might have to have some of them occuring on the 31st or the 2nd rather than all on the 1st===hence the question...what is the best fit that can be arranged to make them all fall on or near the first of the month]
2007-12-21 00:42:12 · update #1
of course the equinoxes and solstice occur whenever they occur, and our arbitrary date are fixed to them.
if we deleted ten days from a year
[which only the dimwits among you will not be aware has been done before!]...
then it would alter our calender so that the start of january april july and october.
more importantly, the four quarters of the year will align up with new years day.
ie new years day/winter solstice is 1st jan
spring equnox is 1st april
summer solstice is 1st july
autumn equinox is 1st october
the main point is that the equinoxes would synchronise with the start of the month, and new year would synchronise with winter soltice......but instead of the silly arbitrary 21st of decenmber it would align with the 1st of january.....the whole thing would link up and align with the first of january.
2007-12-21 00:53:15 · update #2
I have absolutely no idea of what you are talking about - We gave the months their names - we decided, based on the lunar cycle, when to start and end months - The solstices are based on the Earth's movement around the sun - We could jettison the Lunar calendar and make a new one based on the Earth's rotation and just call the 21st December the last day of the year and do everything by quarters or eighths or sixteenths......... It would be easy to do but utterly pointless seeing as how the system we have took hundreds of years to hone and works perfectly fine as it is..............
2007-12-20 23:10:29 · answer #1 · answered by john n 3 · 0⤊ 1⤋
map is correct. An eqinox or solstice happens exactly four times a year, whereas a day happens approximately 365.256 363 051 times a year, and that value isn't constant.
If we didn't have so much invested in our present calendar scheme, we might divide the year into astronomical quarters, with the first beginning at the winter solstice of the northern hemisphere. But then, days would be an independent timescale. The beginning of the year could fall near midnight, dawn, noon, or dusk, and would precess with a period of about 4 years. That would be better for some purposes, but not nearly enough benefit to justify any change.
2007-12-21 05:48:05 · answer #2 · answered by Frank N 7 · 0⤊ 0⤋
Wile a day is defined by spin of earth, a year is defined by earths revolution about sun. Both movements are independent. So there is no number of days (spins of earth) you can take out of a year (1 revolution around sun) in order to fit an equinox or solstice to happen every 3 months.
2007-12-20 23:18:47 · answer #3 · answered by map 3 · 1⤊ 1⤋
Why are you calling the answerers on here dimwits?
if you don't want their opinions - and it's "so simple" to work out - then why havn't you done it yourself?
2007-12-21 04:10:04 · answer #4 · answered by Trevor h 6 · 1⤊ 0⤋