Who Invented The Calendar ?
The Calendar is a system
for arranging the year into
days, weeks and months.
Ancient Calendar
Lunar Calendar
Historians donot know who or when mankind invented the first calendar, probably early man when he first carved a notch into a stick or a bone which marked the passing of each full moon.
Notched bones used to record moon phases have been found in Africa and Europe dating back to about 20,500 BC.
What is the Origin or Etymology
of the word Calendar
Kalendae or calends
was the first day of each month
in the ancient Roman calendar
Middle English and Anglo-French calender .
Medieval Latin kalendarium,
from the Latin word for accounting books.
•The Gregorian & Julian Calendar
The Gregorian is the Calendar in use today
THE DAY
The civil day in ancient cultures was made up of "Watches". The length of the watch varied with the season, and were called seasonal or temporal hours. They were related to the length of the Suns time above the horizon. This method was known as far back as 1800 BC and was used until the end of the 13th century AD in Europe. At that time it became inconvenient to use because of the invention of the mechanical clock. The seasonal method was uneven and the mechanical clock had an even 12 hours for day and 12 hours for night.
The 12 comes from Babylonian
2 x 12 = 24 (5 x 12 = 60).
They did this rather than using the base 10. This is known as the
Sumerian Sexagesimal System.
based on the number 60.
And it has carried to this day.
We use 60 SECONDS in a MINUTE
60 minutes in an HOUR.
The civil day now begins at midnight local time. However the Julian day still starts at noon. From the 2nd century AD until 1925 astronomers counted days from noon to noon. Primitive tribes used dawn to dawn for a day. The Babylonians, Jews and Greeks counted a day from dawn to sunset and sunset to dawn. The Hindus and Egyptians day began at dawn. The Romans and Teutons began their day at midnight.
Today the system used for the calendar is the MEAN SOLAR DAY.
Mean Solar Day is the average of a solar day because the length of the day varies slightly during the year as the Earth rotates around the Sun. The orbit of the Earth makes the Sun appear to move eastward each day relative to the Stars.
The Solar Day is about 4 minutes longer than the Sidereal Day.
A Mean Solar day is
24 hours 3 minutes 56.55 seconds
of mean sidereal time.
A Sidereal Day is
23 hours 56 minutes 4.1 seconds
of mean solar time.
Dear Duckbutt Robertson, contrary to your misguided belief system, your 'Jesus' did Not invent the calendar, nor was it ever based on your "Jesus Christ". In fact the 'calendar' in one form or another has been around much longer than the 6 thousand years you believe the Earth has been in existence. Get your calculator out duckboy! I know you don't get much 'press' anymore since your 'reality' show flopped over dead, but stop it with the evangelical showboating, you had your day in the sun, now crawl back under your rock like a good slug and go back to sleep. People are dealing with the Truth, and Science out here, you Silly boy!
The Calendar is a system
for arranging the year into
days, weeks and months.
Ancient Calendar
Lunar Calendar
Historians donot know who or when mankind invented the first calendar, probably early man when he first carved a notch into a stick or a bone which marked the passing of each full moon.
Notched bones used to record moon phases have been found in Africa and Europe dating back to about 20,500 BC.
What is the Origin or Etymology
of the word Calendar
Kalendae or calends
was the first day of each month
in the ancient Roman calendar
Middle English and Anglo-French calender .
Medieval Latin kalendarium,
from the Latin word for accounting books.
•The Gregorian & Julian Calendar
The Gregorian is the Calendar in use today
THE DAY
The civil day in ancient cultures was made up of "Watches". The length of the watch varied with the season, and were called seasonal or temporal hours. They were related to the length of the Suns time above the horizon. This method was known as far back as 1800 BC and was used until the end of the 13th century AD in Europe. At that time it became inconvenient to use because of the invention of the mechanical clock. The seasonal method was uneven and the mechanical clock had an even 12 hours for day and 12 hours for night.
The 12 comes from Babylonian
2 x 12 = 24 (5 x 12 = 60).
They did this rather than using the base 10. This is known as the
Sumerian Sexagesimal System.
based on the number 60.
And it has carried to this day.
We use 60 SECONDS in a MINUTE
60 minutes in an HOUR.
The civil day now begins at midnight local time. However the Julian day still starts at noon. From the 2nd century AD until 1925 astronomers counted days from noon to noon. Primitive tribes used dawn to dawn for a day. The Babylonians, Jews and Greeks counted a day from dawn to sunset and sunset to dawn. The Hindus and Egyptians day began at dawn. The Romans and Teutons began their day at midnight.
Today the system used for the calendar is the MEAN SOLAR DAY.
Mean Solar Day is the average of a solar day because the length of the day varies slightly during the year as the Earth rotates around the Sun. The orbit of the Earth makes the Sun appear to move eastward each day relative to the Stars.
The Solar Day is about 4 minutes longer than the Sidereal Day.
A Mean Solar day is
24 hours 3 minutes 56.55 seconds
of mean sidereal time.
A Sidereal Day is
23 hours 56 minutes 4.1 seconds
of mean solar time.
Dear Duckbutt Robertson, contrary to your misguided belief system, your 'Jesus' did Not invent the calendar, nor was it ever based on your "Jesus Christ". In fact the 'calendar' in one form or another has been around much longer than the 6 thousand years you believe the Earth has been in existence. Get your calculator out duckboy! I know you don't get much 'press' anymore since your 'reality' show flopped over dead, but stop it with the evangelical showboating, you had your day in the sun, now crawl back under your rock like a good slug and go back to sleep. People are dealing with the Truth, and Science out here, you Silly boy!
Progressive Secular Humanist Examiner shared a link.
Duck Dynasty star Si Robertson claims there’s no such a thing as an atheist because “our calendars are based on Jesus Christ.”
patheos.com|By Progressive Secular Humanist Examiner
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