RoseOng ChristianCalendar

8/8/2019 RoseOng ChristianCalendar

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Julius Caesar developed the Julian calendar Pope Gregory XIII developed the Christian calendar


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INTRODUCTORY:INTRODUCTORY: The Christian calendar, which is also known as

Gregorian calendar or Western calendar, ismostly used by people around the world today.

Christian calendar was first introduced in 1582by Pope Gregory XIII. Hence, the wordGregorian was named after him.

The calendar is developed as a way to correctthe Julian calendar.


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Julian calendar Christian calendar


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Many years back, Julian calendar was usedinstead of the Christian calendar.

Julian calendar:

There was a minor error and t his causes t he Julian calendar to beinaccurate

Due to a calculation error, leap years occurred once in every t h ree years during t he first 36 years after t he Julian calendar was introduced.

Augustus t hen corrected t he error by c hanging leap years to occurevery four years but many extra days had been added to t he Julian years


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The Julian calendar was longer t

han actual solar years

W hen many centuries had past, t he Julian calendar became more

and more inaccurate as t h

e days were lagging be h

ind

People t hen noticed seasons being appeared earlier in t he year

The date of Easter was also argued t h roug hout t he early C h ristian history


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C h ristian / Gregorian / Western calendar:

Aloysius Lilius was t he first to suggest t he c hanges to t he Juliancalendar

Then, Pope Gregory XIII adopted t he C h ristian calendar inagreement wit h t he instructions from t he Council of T rent

The C h ristian calendar was decided on 24 February 1582

The C h ristian year was taken as 365 days


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W hen of t he extra day was added every four year, oneextra day will be formed

Hence, leap years occurred every four years w hic h followed t he Julian calendar custom

The extra day was moved to t he 29t h of February

T en days were taken out from t he Julian calendar suc h t hatt he following Thursday, 4t h October 1982 would be Friday,

15t h October so as to bring t he Julian calendar back in line

From t hen onwards, t he reformed calendar, called as t heC h ristian calendar, would be used


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A s the Christian calendar was aninnovation of the Catholic Church, the

church accepted the calendarimmediately.

While for the others, they took a longtime accepting it.


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1) One year is divided into twelve months. The twe

January (31 days on first month)

February (28/29 (in leap years) days in second month)

March (31 days in third month)

April (30 days in forth month)

May (31 days in fifth month)

June (30 days in sixth month)


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July (31 days in seventh month)

August (31 days in eighth month)

September (30 days in ninth month)

October (31 days in tenth month)

November (30 days in eleventh month)

December (31 days in twelfth month)


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For every first day of the months, they are alwa numbered as 1. The names of the months are

usually named after people who had contributeto the development of the Christian calendar.

Example, August was named after Augustus w had corrected the error of the leap years.


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2) One month usually has an average of four weeks.


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The days are usually named af stars and planets in the solar sy Example, Sunday is named aft which is a star found in the sol system.


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ADVANTAGES: M ore accurate than Julian calendar

Is very organized

It is widely-known

Very precise, accurate and reliable


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LIMI TAT IO NS: Christian calendar is not perfect

The Christian year is slower than the solaryear by around 30 seconds every year

Christian calendar will be 3 days slowerthan the solar year in every 10, 000 years


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I feel that people should be aware of the origins of the calendarbecause our forefathers had went through thick and thin to developbetter calendars for us. We should not take things for granted. Weshould appreciate our forefathers works because if it were not fortheir effort, better calendars would not be developed and I think wewill still have problems with our dates. Calendars are not easy to becreated. They take up time, patience and effort for them to bedeveloped. It is not only the effort of one person but is the effort of many people who contributes to the development of calendars.

Calculations of the time taken of the solar year will also be neededto be made and I feel that this was the most challenging part for ourforefathers. They did not give up in finding the answer and in theend they still managed to get it. Lastly, I think that calendars cannever be perfect as there will still be some limitations.


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Sources: http://en.wikipedia.org/wiki/Julian_calendar

http://www.tondering.dk/claus/cal/node3.html http://europeanhistory.about.com/od/religionandthought/a/intro http://en.wikipedia.org/wiki/Week-day_names http://www.searchforancestors.com/utility/gregorian.html http://www.abdicate.net/cal.aspx http://ancienthistory.about.com/od/gterms/g/122207Gregorian. http://geography.about.com/od/culturalgeography/a/gregorian.hGoogle Images

Done By: Rose Ong Chew Ling (12) Class: 1R7

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