Relics of the Stone Age
Looking at astronomical calendar, we find there comprehensive information on the situation of the planets in the sky at one time or the other day about the upcoming solar and lunar eclipses, of the sunrise and sunset points and the moon, and much more.And, of course, each calendar informs the reader about when his hemisphere spring begins (summer, fall, winter), resulting in moments of passage of the Sun through the vernal equinox, and so on. D. The ability to calculate all these phenomena with high accuracy and at dozensyears ahead indicates a high level of astronomical culture, which has reached our earthly civilization.
But many of these issues, interested people on Earth and three, and six thousand years ago, despite the fact that in various parts of its people to live, speak and think in different ways.For example, tillers needed to know whether the accident will come warming or it's time to sowing: it'll be late, or, on the contrary, you start sowing too early - can be left without bread.If herder
About begins when one or the other season (as a whole- the new annual cycle), ancient people could learn to change the form of the sky throughout the year.The answer to this question could also be obtained by measuring the height of the sun above the horizon at noon, or that much easier to do - watching the continuous movement of the point of sunrise (and sunset) the sun to the north and to the south with respect to some of its middle position.And if at some point to establish guidelines indicating the direction to the sunrise point at the moment of the vernal equinox, summer and winter solstice, in the future for many decades would have been possible to solve the inverse problem: watching the sunrise over one or the other guide, you canit was to establish the beginning of a particular season, the beginning of the new year.The study of material culture monuments of many nations leads to the conclusion that in this way in the past people used quite often.
define the day of the week, coming on January 1, 1987 Pre-we find that for this year's E = 5. Next, for December Mi = 4, there are also P = 1 and D = 1. Substituting these values we find q = 4 -Thursday.
noteworthy gap throughout the years, "the turn" centuries than the monthly table of coefficients and different from the same table for the Julian calendar.If a century year - simple, the 28-year cycle, it can not take place immediately following the 99th.After previous - 99th (28 = 100) 72-th year was a leap year, and the transition from February to March in it Mi ratio increased by 1. On the other hand, a one-year amendment (solar Epact) E in the transition from one year toby secular increases by 1. Therefore, a century year moves forward position on X, where X is determined from the ratio
he takes his place immediately after the leap second as acceptable value for X is X = 6. The plate painted for 28 years, the age-old year becomes around 77 year.In turn, the 01 th year of the new century should be the first to 4th, a leap year.This means that Epact the transition from year 00 to year 01 should also be increased by 1. From the same conditions recorded above 01 years we find a shift towards the value X = 12: the beginning of the next century correspond to the same Ki as the year 89 th centuryprevious.However, in the case where the secular leap year (as 2000 minutes), during this gap period would not.
For example, April 25, 1983 we have E = 0, for Mi = April 3, so that q = 0 - Sunday.
In accordance with the above, in the Julian calendar monthly coefficients Ki = E + Mi completely repeated after 28 and 700 years.Here's the chain has no discontinuities.