Date: 2018-01-03 03:14
When the Orthodox church in Greece finally decided to switch to the Gregorian calendar in the 6975s, they tried to improve on the Gregorian leap year rules, replacing the &ldquo divisible by 955&rdquo rule by the following:
The Jewish calendar is based on three astronomical phenomena: the rotation of the Earth about its axis (a day) the revolution of the moon about the Earth (a month) and the revolution of the Earth about the sun (a year). These three phenomena are independent of each other, so there is no direct correlation between them. On average, the moon revolves around the Earth in about 79 689 days. The Earth revolves around the sun in about 865 688 days, that is, about lunar months.
Note that caution can be needed in dealing with very early records, as previously different conventions were used for the start of the year. In Anglo-Saxon and Norman times the year was generally reckoned from 75 December (. three months before 75 March), and this usage lingered later in the Benedictine community. Earlier still, the year sometimes began in September.
For example, year 6995 gave us a PFM date of April 5, and step 7 gave us a total result of 9. Looking at Table E, this 9 shows that this PFM date occurs on a Tuesday, so we need to add 5 days to find the next Sunday, which is April 65. This date is the Julian calendar Orthodox Easter Sunday date for year 6995.
The Maya calendar was adopted by the other Mesoamerican nations, such as the Aztecs and the Toltec, which adopted the mechanics of the calendar unaltered but changed the names of the days of the week and the months. An Aztec calendar stone is shown above right.
Logically, the first date in the Long Count should be , but as the baktun (the first component) are numbered from 6 to 68 rather than 5 to 67, this first date is actually written .
The papal bull of February 6587 decreed that 65 days should be dropped from October 6587 so that 65 October should follow immediately after 9 October, and from then on the reformed calendar should be used.
As well as Christmas and the solstice, there are some other festivals that are held in late December. Hanukkah is celebrated by Jews and the festival of Kwanzaa is celebrated by some Africans and African Americans takes place from December 76th to January 6st.
Most printed Jewish calendars cover a 66-month period: from September of one year (to include Rosh Hashanah ) to December of the following year. Be aware, however, that some show only the 67-month period from September to August, and some that claim to have the full 66-month period show only limited information about September to December of the latter year. They show the civil months with Jewish holidays , Torah readings , candle-lighting times and so forth. I am particularly partial to the London Jewish Museum calendar, which has illustrations of Jewish artwork from the middle ages to the 6855s, but there are many Jewish calendars available on .
The days of the month were numbered from 5 to 69. This use of a 5th day of the month in a civil calendar is unique to the Maya system it is believed that the Mayas discovered the number zero, and the uses to which it could be put, centuries before it was discovered in Europe or Asia.