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Millennium: 2nd millennium
1242 in various calendars
Gregorian calendar 1242
Ab urbe condita 1995
Armenian calendar 691
Assyrian calendar 5992
Balinese saka calendar 1163–1164
Bengali calendar 649
Berber calendar 2192
English Regnal year 26  Hen. 3   27  Hen. 3
Buddhist calendar 1786
Burmese calendar 604
Byzantine calendar 6750–6751
Chinese calendar 辛丑(Metal  Ox)
3938 or 3878
壬寅年 (Water  Tiger)
3939 or 3879
Coptic calendar 958–959
Discordian calendar 2408
Ethiopian calendar 1234–1235
Hebrew calendar 5002–5003
Hindu calendars
 - Vikram Samvat 1298–1299
 - Shaka Samvat 1163–1164
 - Kali Yuga 4342–4343
Holocene calendar 11242
Igbo calendar 242–243
Iranian calendar 620–621
Islamic calendar 639–640
Japanese calendar Ninji 3
Javanese calendar 1151–1152
Julian calendar 1242
Korean calendar 3575
Minguo calendar 670 before ROC
Nanakshahi calendar −226
Thai solar calendar 1784–1785
Tibetan calendar 阴金牛年
(female Iron-Ox)
1368 or 987 or 215
(male Water-Tiger)
1369 or 988 or 216

Year 1242 ( MCCXLII ) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.

Roman numerals Numbers in the Roman numeral system

The numeric system represented by Roman numerals originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet. Roman numerals, as used today, employ seven symbols, each with a fixed integer value, as follows:

A common year starting on Wednesday is any non-leap year that begins on Wednesday, 1 January, and ends on Wednesday, 31 December. Its dominical letter hence is E. The most recent year of such kind was 2014, and the next one will be 2025 in the in the Gregorian calendar or, likewise, 2015 and 2026 in the obsolete Julian calendar. The century year, 1800, was also a common year starting on Wednesday in the Gregorian calendar, see below for more. Any common year that starts on Wednesday, Friday or Saturday has only one Friday the 13th; The only Friday the 13th in this common year occurs in June. Leap years starting on Tuesday share this characteristic.

The Julian calendar, proposed by Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on 1 January 45 BC, by edict. It was the predominant calendar in the Roman world, most of Europe, and in European settlements in the Americas and elsewhere, until it was refined and gradually replaced by the Gregorian calendar, promulgated in 1582 by Pope Gregory XIII.



By area


Ifriqiya historic country in Northern Africa

Ifriqiya or Ifriqiyah or el-Maghrib el-Adna was the area during medieval history comprising what is today Tunisia, Tripolitania and the Constantinois — all part of what was previously included in the Africa Province of the Roman Empire.

Kingdom of Tlemcen

The Kingdom of Tlemcen or Zayyanid Kingdom of Tlemcen was a Berber kingdom in what is now the northwest of Algeria. Its territory stretched from Tlemcen to the Chelif bend and Algiers, and reached at its zenith the Moulouya River to the west, Sijilmasa to the south and the Soummam river to the east.


Emperor Go-Saga Emperor of Japan

Emperor Go-Saga was the 88th emperor of Japan, according to the traditional order of succession. This reign spanned the years 1242 through 1246.

Batu Khan Mongol Khan

Batu Khan, also known as Sain Khan and Tsar Batu, was a Mongol ruler and founder of the Golden Horde, a division of the Mongol Empire. Batu was a son of Jochi and grandson of Genghis Khan. His ulus was the chief state of the Golden Horde, which ruled Rus', Volga Bulgaria, Cumania, and the Caucasus for around 250 years, after also destroying the armies of Poland and Hungary. "Batu" or "Bat" literally means "firm" in the Mongolian language. After the deaths of Genghis Khan's sons, he became the most respected prince called agha in the Mongol Empire.

Golden Horde Mongol Khanate

The Golden Horde was originally a Mongol and later Turkicized khanate established in the 13th century and originating as the northwestern sector of the Mongol Empire. With the fragmentation of the Mongol Empire after 1259 it became a functionally separate khanate. It is also known as the Kipchak Khanate or as the Ulus of Jochi.


  • April 5 During a battle on the ice of Lake Peipus, Russian forces, led by Alexander Nevsky, rebuff an invasion attempt by the Teutonic Knights.
  • Cleves, Germany is chartered as a city.
  • Kiel, Germany is chartered as a town.
  • The Archbishop of Mainz conquers the city of Wiesbaden, from the House of Nassau.
  • King Sancho II of Portugal conquers the cities of Tavira, Alvor and Paderne, in his continuing effort against the Muslims, known as Reconquista. [2]
  • Mongol invasions
    Bratislava Capital city in Slovakia

    Bratislava is the capital of Slovakia. With a population of about 425,000, it is one of the smaller capitals of Europe but still the country's largest city. The greater metropolitan area is home to more than 650,000 people. Bratislava is in southwestern Slovakia, occupying both banks of the River Danube and the left bank of the River Morava. Bordering Austria and Hungary, it is the only national capital that borders two sovereign states.

    The Mongols are an East-Central Asian ethnic group native to Mongolia and to China's Inner Mongolia Autonomous Region. They also live as minorities in other regions of China, as well as in Russia. Mongolian people belonging to the Buryat and Kalmyk subgroups live predominantly in the Russian federal subjects of Buryatia and Kalmykia.

    Volga Bulgaria former country

    Volga Bulgaria or Volga–Kama Bulghar, was a historic Bulgar state that existed between the 7th and 13th centuries around the confluence of the Volga and Kama River, in what is now European Russia.

April 5 is the 95th day of the year in the Gregorian calendar. There are 270 days remaining until the end of the year.

Lake Peipus lake in Estonia and Russia

Lake Peipus is the largest transboundary lake in Europe, lying on the border between Estonia and Russia.

Alexander Nevsky political and military figure of the medieval Rus

St. Alexander Yaroslavich Nevsky served as Prince of Novgorod, Grand Prince of Kiev (1236–52) and Grand Prince of Vladimir (1252–63) during some of the most difficult times in Kievan Rus' history.

By topic


Timeline of the history of medicine and medical technology.

Ventricle (heart) chamber of the heart

A ventricle is one of two large chambers toward the bottom of the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs. The atrium primes the pump. Interventricular means between the ventricles, while intraventricular means within one ventricle.


  • The diocese of Warmia, Poland is created.



Emperor Shijo Emperor Shijo.jpg
Emperor Shijō
Emperor Juntoku Emperor Juntoku large.jpg
Emperor Juntoku

Related Research Articles

Year 1282 (MCCLXXXII) was a common year starting on Thursday of the Julian calendar.

The 1380s was a decade of the Julian Calendar which began on January 1, 1380, and ended on December 31, 1389.

Year 1226 (MCCXXVI) was a common year starting on Thursday of the Julian calendar.

1234 Year

Year 1234 (MCCXXXIV) was a common year starting on Sunday of the Julian calendar.

1394 Year

Year 1394 (MCCCXCIV) was a common year starting on Thursday of the Julian calendar.

The 1250s decade ran from January 1, 1250, to December 31, 1259.

1055 Year

Year 1055 (MLV) was a common year starting on Sunday of the Julian calendar.

The 1220s was a decade of the Julian Calendar which began on January 1, 1220, and ended on December 31, 1229.

The 1240s was a decade of the Julian Calendar which began on January 1, 1240, and ended on December 31, 1249.

Year 1358 (MCCCLVIII) was a common year starting on Monday of the Julian calendar.

Year 1385 (MCCCLXXXV) was a common year starting on Sunday of the Julian calendar.

Year 1399 (MCCCXCIX) was a common year starting on Wednesday of the Julian calendar.

Year 1291 (MCCXCI) was a common year starting on Monday of the Julian calendar.

Year 1218 (MCCXVIII) was a common year starting on Monday of the Julian calendar.

Year 1160 (MCLX) was a leap year starting on Friday of the Julian calendar.

Year 1249 (MCCXLIX) was a common year starting on Friday of the Julian calendar.

1259 Year

Year 1259 (MCCLIX) was a common year starting on Wednesday of the Julian calendar. Dating year of the 1257 major volcanic anomaly, to be found in (polar) ice cores, supposed to be the Samalas eruption https://en.wikipedia.org/wiki/1257_Samalas_eruption

1260 Year

Year 1260 (MCCLX) was a leap year starting on Thursday of the Julian calendar.

Golden bull Byzantine legal decrees

A golden bull or chrysobull was a decree issued by Byzantine Emperors and later by monarchs in Europe during the Middle Ages and Renaissance, most notably by the Holy Roman Emperors. The term was originally coined for the golden seal, attached to the decree, but came to be applied to the entire decree. Such decrees were known as golden bulls in western Europe and chrysobullos logos, or chrysobulls, in the Byzantine Empire.

Mongol invasion of Europe 13th century conquests

The Mongol invasion of Europe in the 13th century was the conquest of Europe by the Mongol Empire, by way of the destruction of East Slavic principalities, such as Kiev and Vladimir. The Mongol invasions also occurred in Central Europe, which led to warfare among fragmented Poland, such as the Battle of Legnica and in the Battle of Mohi in the Kingdom of Hungary.


  1. Gilbert Meynier (2010) L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658-1518). Paris: La Découverte; pp.38.
  2. Picard, Christophe (2000). Le Portugal musulman (VIIIe-XIIIe siècle. L'Occident d'al-Andalus sous domination islamique. Paris: Maisonneuve & Larose. p. 110. ISBN   2-7068-1398-9.