How did we determine the calender?

Question

i am very curious on how people started the calander? why 365 days. 24 hours a day.

Answer 1

This is a very interesting question, and to answer it we have to begin with a bit of social history, which concerns counting on our fingers. Our system of arithmetic is base 10, which seems very intuitive because we have ten fingers. But in ancient Mesopotamia, people counted to twelve on their fingers. The way they did this is that they used the joints of their fingers as counters, and the thumb as a pointer. There are three joints in each finger, so base 12 was the "natural" counting system. This was the system of arithmetic used until decimals were invented in India about 1500 years ago.

Base 12 arithmetic has leaked through into many of our present measurement systems. We count 12 inches in a foot, 12 in a dozen, 360 degrees in a circle....all measurment systems that find their roots in Mesopotamia.

With that understanding, the development of our time measurement systems becomes easy to understand. There are 24 hours in a day, because the ancient system divided night and day each into 12 equal divisions. (Doing this meant that hours changed lengths with the seasons, and it was only the invention of mechanical clocks that caused the invention of the "standard" hour.)

The year could easily be measured as 365+ days by astronomical observation. What could be easier than dividing the year into 12 equal months, of 30 days each? Ooops...the model doesn't match the reality! Ancient civilizations considered the "extra" days to be an anomaly, and reserved the final five days of the year as feast days. (These are referred to as "intercalary days", literally "days between the calendar." ) Elaborate mythology developed to explain these days, including the Egyptian legend of the birth of Osiris, bits of which come down to us as the story of Christmas:

"Re, unaware, stumbled upon this union of Geb and Nut. Angered at his unfaithful wife, He forced the lovers apart....Though Re's wrath against His wife was not yet complete. He further decreed that Nut, impregnated by Her union with Geb, should never give birth to Her young in any month of any year. Instead, They were to be locked within Her, never to see the light of day. "

"Nut mourned for Her loss; the loss of both Her lover and Her unborn children. Her lamentations reached even unto the ears of Thoth, the Self Created. He rushed to Her side, and dried Her tears. He soothed Her and spoke with Her, discovering the pain which inflicted Her. Thoth, who was the Lord of all magick and spells, knew that Re's decree could not be undone. Yet, he knew also that there was a way in which to relieve great Nut of Her suffering. "

"To this end, Thoth created the game of draughts, and challenged the Moon Goddess Silene; whose light then rivaled that of the sun. Thoth convinced Her to gamble a seventieth part of Her light for each day of the year. Being the Lord of Wisdom, He easily won from Her this light, and to this day the moon dwindles and darkens at certain periods. Thoth pieced together the light he had won- enough to fashion five whole days- and added them to the end of the 360-day lunar year. "

"These days did not rest within any month, nor any year, and thus Nut was able to bear Her children, one on each day. On the first was born Osiris. As he came into the World a Great Voice was heard throughout the heavens proclaiming that the Lord of Creation was born."

The strucuture of our calendar has undergone several major revisions. The first, by Julius Ceasar, aligned the ten-month Roman calendar with the 12 month Egyptian calendar. The names of our months are Roman: July and August are named for Julius and Augustus Ceasar. September, October, November, December, are Latin for seventh month, eighth month, ninth month and tenth month. The earlier month names relate to feast days.

Our current calendar was developed under Pope Gregory in the 16th century. Numerous corrections were made to make the calendar more closely correspond with the actual solar year.

Answer 2

Calendar is the system of dividing Time into days,Weeks, Months, Seasons and Years. Even though numerous systems of Calendars have been devised by different Civilization from Time immemorial, all of them are mainly based on two movements. one the movement of Sun called Solar Cycle and the movement of moon called Lunar Cycle. These are again divided into minutes, hours, days weeks, months and years. One year is the period of Earth's one revolution around the Sun. This has a Three fold system:
1) The Sidereal year has 365 days 6 Hours 9 minutes 9.29 Secs.
2) The Tropical year has 365 days 5 Hours 48 mins. 45.37 Secs.
3) The Anomalistic Year has 365 days 6 Hrs. 13 mins.48.61Secs

Similarly Lunar Calendars are based on movement of Moon.

But for convenience sake we adopt 365 days per year and adjust the difference every fourth year by adding a day on leap year.

This is a vast subject. Ancient Hindus have developed comprehensive systems with minutest division of time and left volumes of information. Ancient Civilizations of Greek, Romans, Jews. The Egyptian, The Incan, The Mayan, The Aztec have also developed sophisticated alternate systems of Calendars. The present Gregorian Calendar that we follow should be credited to Pope Gregory XIII in 1582.

Answer 3

its consistently been incorrect in my case. I actually have a son, each and every person i've got ever checked says the month in the past, throughout and after that i might have conceived him, he replaced into gonna be a woman. nope, he's surely a boy. LOL. and there are diverse variations of the calendar. some say you ought to upload 9 months to the mothers age, so it is going via the chinese language calendar, its a team of hooey. i've got tried all of them, its consistently incorrect. think of approximately it, its consistently 50/50 its gonna be right, soo all the persons who tried it and it replaced into right, of direction its gonna be right the fairly some time. wait till finally your 20 week test and ask. :)

Answer 4

365.25 days is the orbital length of the earth travels about the sun. The Earth rotates at approximately 1,000 mi/hr. and the earth is approximately 8,000 mi in diameter or roughly 24,000 mi. is circumference. 24,000/1,000= 24

NOTE: none of the figures are exact but close enough to understand the reason for the days and hours.

Answer 5

duh. It has to do with the rotation of the earth around the sun and the moon around the earth. the earth is spinning and it takes one day (24 hours) to make one rotation. the moon is circling the earth-about 28 days for one rotation. the earth is circling the sun-about 365 days for one rotation.

Answer 6

Oh, now you have made me curios!!!