September 12

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September 12 is the 255th day of the year(256th in leap years) in the Gregorian calendar. 110 days remain until the end of the year.

A leap year is a calendar year containing one additional day added to keep the calendar year synchronized with the astronomical or seasonal year. Because seasons and astronomical events do not repeat in a whole number of days, calendars that have the same number of days in each year drift over time with respect to the event that the year is supposed to track. By inserting an additional day or month into the year, the drift can be corrected. A year that is not a leap year is called a common year.

The Gregorian calendar is the calendar used in most of the world. It is named after Pope Gregory XIII, who introduced it in October 1582. The calendar spaces leap years to make the average year 365.2425 days long, approximating the 365.2422-day tropical year that is determined by the Earth's revolution around the Sun. The rule for leap years is:

Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the year 2000 is.

Contents

Events

490 BC Year

Year 490 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Camerinus and Flavus. The denomination 490 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Battle of Marathon 490 BC battle in the Greco-Persian Wars

The Battle of Marathon took place in 490 BC, during the first Persian invasion of Greece. It was fought between the citizens of Athens, aided by Plataea, and a Persian force commanded by Datis and Artaphernes. The battle was the culmination of the first attempt by Persia, under King Darius I, to subjugate Greece. The Greek army decisively defeated the more numerous Persians, marking a turning point in the Greco-Persian Wars.

372 Year

Year 372 (CCCLXXII) was a leap year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Modestus and Arintheus. The denomination 372 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Births

1415 Year

Year 1415 (MCDXV) was a common year starting on Tuesday of the Julian calendar.

Year 1492 (MCDXCII) was a leap year starting on Sunday of the Julian calendar.

Lorenzo de Medici, Duke of Urbino 16th-century Italian nobleman

Lorenzo di Piero de' Medici was the ruler of Florence from 1516 until his death in 1519. He was also Duke of Urbino during the same period. His daughter Catherine de' Medici became Queen Consort of France, while his illegitimate son, Alessandro de' Medici, became the first Duke of Florence.

Deaths

Year 640 (DCXL) was a leap year starting on Saturday of the Julian calendar. The denomination 640 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

973 Year

Year 973 (CMLXXIII) was a common year starting on Wednesday of the Julian calendar.

Nefingus, in French Néfingue, was the bishop of Angers from 966 until his death. His predecessor, Aimo, died on 19 October 966.


Holidays and observances

Calendar of saints Christian liturgical calendar celebrating saints

The calendar of saints is a traditional Christian method of organizing a liturgical year by associating each day with one or more saints and referring to the day as the feast day or feast of said saint. The word "feast" in this context does not mean "a large meal, typically a celebratory one", but instead "an annual religious celebration, a day dedicated to a particular saint".

Ailbe of Emly saint

Saint Ailbe, usually known in English as St Elvis (British/Welsh), Eilfyw or Eilfw, was regarded as the chief 'pre-Patrician' saint of Ireland. He was a bishop, confessor and later saint. Little that can be regarded as reliable is known about Ailbe: in Irish sources from the 8th century he is regarded as the first bishop, and later patron saint of Emly in Munster. Later Welsh sources associate him with Saint David whom he was credited with baptizing and very late sources even give him a local Welsh genealogy making him an Ancient Briton.

Ebontius, also known as Ebon, Pontius, or Ponce, was Bishop of Barbastro, Spain, after its recapture from the Moors. Born in Comminges, Haute Garonne, France, he became a Benedictine and abbot before accepting the See of Babastro.

Related Research Articles

August 8 is the 220th day of the year in the Gregorian calendar. 145 days remain until the end of the year.

April 7 is the 97th day of the year in the Gregorian calendar. 268 days remain until the end of the year.

December 8 is the 342nd day of the year in the Gregorian calendar. 23 days remain until the end of the year.

June 21 is the 172nd day of the year in the Gregorian calendar. 193 days remain until the end of the year.

July 27 is the 208th day of the year in the Gregorian calendar. 157 days remain until the end of the year.

May 14 is the 134th day of the year in the Gregorian calendar. 231 days remain until the end of the year.

November 22 is the 326th day of the year in the Gregorian calendar. 39 days remain until the end of the year.

November 5 is the 309th day of the year in the Gregorian calendar. 56 days remain until the end of the year.

November 7 is the 311th day of the year in the Gregorian calendar. 54 days remain until the end of the year.

November 3 is the 307th day of the year in the Gregorian calendar. 58 days remain until the end of the year.

November 17 is the 321st day of the year in the Gregorian calendar. 44 days remain until the end of the year.

October 1 is the 274th day of the year in the Gregorian calendar. 91 days remain until the end of the year.

October 10 is the 283rd day of the year in the Gregorian calendar. 82 days remain until the end of the year.

October 18 is the 291st day of the year in the Gregorian calendar. 74 days remain until the end of the year.

September 21 is the 264th day of the year in the Gregorian calendar. 101 days remain until the end of the year.

September 16 is the 259th day of the year in the Gregorian calendar. 106 days remain until the end of the year.

September 5 is the 248th day of the year in the Gregorian calendar. 117 days remain until the end of the year.

September 25 is the 268th day of the year in the Gregorian calendar. 97 days remain until the end of the year.

September 29 is the 272nd day of the year in the Gregorian calendar. 93 days remain until the end of the year.

August 20 is the 232nd day of the year in the Gregorian calendar. 133 days remain until the end of the year.

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