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calendar
Gregorian
calendar
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Astronomer
was introduced from the Pope Gregory Xlll in the 1582, in
order to correct the previous intentional Julian calendar
from Julius Caesar. In fact the astronomers convened in
the 46 a.C. from J. Caesar, considered the year, composed
from 365 days and 6 hours, instead of the effectives 365
days 5h 48 ' and 46 ". Such difference in excess of
11 ' and 14 ", involved an increment of 1 every day
128 years. In the 1582 a delay of 10 days was therefore
accumulated, for which Gregorio Xlll it established that
the successive day to a 4 friday October 1582, became 15
saturdays October, bringing back therefore the date of the
spring equinox to 21-3. Beyond to this the Pope astronomer
it considered also for the future years, in fact it established
the abolition of 3 days every 4 centuries, removing from
the number of the bissextile years those secular years whose
group of the first two figures was not divisible for four.
1700, 1800, 1900 were not bissextile, it will be 2000, 2400.
Also this system however is affection from error regarding
the seasons, quantify in 1 every day 3300 years. This system
of calendar came immediately adopted from the countries
of catholic religion, and later on also from the other nations:
in 1700 in Norway and Denmark in 1752 in England in 1918 in Russia in 1932 in Greece |
bissextile
year
| The bissextile year (366 days) servants exactly to recover the 6 hours approximately, of which the calendar year it differs from that solar one. It was introduced for before the time from the Julian reform, came called therefore why the Roman, not wanting for superstition to modify the month, they thought about to make the added one, even to the end of the year, after the sixth antecedent day the calends of March (23 February) that in such a way it came repeated two times, therefore " bis sextus ". |
year
zero respect b.C. & a.C.
| 3760 b.C. for the Hebrew
the creation of the man. 622 a.C. for the Muslims, Maometto emigrated from the Mecca to Medina. 551 b.C. for the confucianist Chinese, nacque Confucius. 660 b.C. for the Japanese the king Jimmutenno founded the Japanese empire. 284 a.C. for the copti (Christian of Abyssinia, Egypt and Sudan), advent to the throne of Diocletian. |
year
definition
| SIDEREAL
YEAR:
exact time that the Earth employs in order to complete an
entire one turn of revolution around to the Sun; solar 365
gg 6h 9 ' 13 ". SOLAR YEAR OR TROPICO: interval that passes between two successive ones spring equinoxes; 365 gg 5h 48 ' 46 ". CALENDAR YEAR: 365 gg. YEAR BISSEXTILE: 366 gg. YEAR LITURGICAL or ECCLESIASTIC: considered for the ceremonies of church; it begins with the Advent (from the come Latin adventus = of the Getlteman). JUDICIAL YEAR: 1 January - 31 Decembers. PLANETARY YEAR: time that employs a planet in order to complete one turn of revolution around the Sun. |
unit
of time reports from 1 second
| medium solar day (d) | = 8.64*104 |
| sideral day | = 8.616409*104 |
| medium solar minute (min) | = 60 |
| sideral minute | = 59.83617 |
| medium standard time (h) | = 3.6*103 |
| sideral hour | = 3.59017*103 |
| sideral second | = 0.9972696 |
| shake | = 1*10-8 |
dates
of Easter
| The
Christian Easter
is Sunday that follows the 1° plenilune that one verification
after the of spring equinox, and is inclusive between March
22 and April 25. Such rule has stayed established from the
Council of Nicea (325). The Passover commemorates the liberation from the slavery from Egypt, and has lasted 8 days beginning from the plenilune of March |
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