1582 (MDLXXXII) was a common year starting on Monday of the Julian calendar, the 1582nd year of the Common Era (CE) and Anno Domini (AD) designations, the 582nd year of the 2nd millennium, the 82nd year of the 16th century, and the 3rd year of the 1580s decade. As of the start of 1582, the Gregorian calendar was 10 days ahead of the Julian calendar, which had previously been the universally accepted calendar in Christian nations. However, this year saw the beginning of the Gregorian Calendar switch, when the Papal bull known as Inter gravissimas introduced the Gregorian calendar, adopted by Spain, Portugal, the Polish–Lithuanian Commonwealth and most of present-day Italy from the start. In these countries, the year continued as normal until Thursday, October 4. However, the next day became Friday, October 15 (like a common year starting on Friday), in those countries (France followed two months later, letting Sunday, December 9 be followed by Monday, December 20). Other countries continued using the Julian calendar for decades or, in some cases, centuries. The complete conversion of the Gregorian calendar was not entirely done until 1923. In the Proleptic Gregorian calendar, 1582 is a common year starting on Friday (link will display the full calendar).

Millennium: 2nd millennium
1582 in various calendars
Gregorian calendar1582
Ab urbe condita2335
Armenian calendar1031
Assyrian calendar6332
Balinese saka calendar1503–1504
Bengali calendar989
Berber calendar2532
English Regnal year24 Eliz. 1 – 25 Eliz. 1
Buddhist calendar2126
Burmese calendar944
Byzantine calendar7090–7091
Chinese calendar辛巳(Metal Snake)
4278 or 4218
    — to —
壬午年 (Water Horse)
4279 or 4219
Coptic calendar1298–1299
Discordian calendar2748
Ethiopian calendar1574–1575
Hebrew calendar5342–5343
Hindu calendars
 - Vikram Samvat1638–1639
 - Shaka Samvat1503–1504
 - Kali Yuga4682–4683
Holocene calendar11582
Igbo calendar582–583
Iranian calendar960–961
Islamic calendar989–990
Japanese calendarTenshō 10
Javanese calendar1501–1502
Julian calendarGregorian minus 10 days
Korean calendar3915
Minguo calendar330 before ROC
Nanakshahi calendar114
Thai solar calendar2124–2125
Tibetan calendar阴金蛇年
(female Iron-Snake)
1708 or 1327 or 555
    — to —
(male Water-Horse)
1709 or 1328 or 556




Date unknown




  1. ^ Moody, Michael E. (2004). "Browne, Robert (1550?–1633)". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/3695. Retrieved 2011-10-10. (subscription or UK public library membership required)
  2. ^ Walton, Timothy (2002). The Spanish Treasure Fleets. Sarasota, FL: Pineapple Press. p. 80. ISBN 1-56164-049-2.
  3. ^ "MS. Sloane 3188". The Magickal Review. Archived from the original on April 10, 2012.
1580s in Denmark

Events from the year 1580s in Denmark.

1582 in India

Events from the year 1582 in India.

1582 in Ireland

Events from the year 1582 in Ireland.

1582 in Scotland

Events from the year 1582 in the Kingdom of Scotland.

Adoption of the Gregorian calendar

The adoption of the Gregorian Calendar was an event in the modern history of most nations and societies, marking a change from their traditional (or old style) dating system to the modern (or new style) dating system that is widely used around the world today. Some countries adopted the new calendar from 1582, some did not do so before the early twentieth century, and others did so at various dates between; however a number continue to use a different civil calendar. For many the new style calendar is only used for civil purposes and the old style calendar remains used in religious contexts. Today, the Gregorian calendar is the world's most widely used civil calendar. During – and for some time after – the change between systems, it has been common to use the terms Old Style and New Style when giving dates, to indicate which calendar was used to reckon them.

The Gregorian calendar was decreed in 1582 by the papal bull Inter gravissimas by Pope Gregory XIII, to correct a divergence in the canonical date of the [northern] spring equinox from observed reality (due to an error in the Julian system) that affected the calculation of the date of Easter. Although Gregory's reform was enacted in the most solemn of forms available to the Church, the bull had no authority beyond the Catholic Church and the Papal States. The changes he was proposing were changes to the civil calendar, over which he had no formal authority. They required adoption by the civil authorities in each country to have legal effect.

The bull became the canon law of the Catholic Church in 1582, but it was not recognised by Protestant churches, Eastern Orthodox Churches, and a few others. Consequently, the days on which Easter and related holidays were celebrated by different Christian churches again diverged.

Akechi Mitsuhide

Akechi Mitsuhide (明智 光秀, March 10, 1528 – July 2, 1582), first called Jūbei from his clan and later Koretō Hyūga no Kami (惟任日向守) from his title, was a samurai and general who lived during the Sengoku period of Feudal Japan. His full name was thus Akechi Jūbei Minamoto-no-Mitsuhide (明智 十兵衛 源の光秀).

Mitsuhide was a general under daimyō Oda Nobunaga, who then became famous for his rebellion against Nobunaga in 1582, which led to Nobunaga's death at Honnō-ji.

Archduchess Eleanor of Austria (1582–1620)

Eleanor of Austria (25 September 1582 – 28 January 1620), was an Austrian princess and a member of the House of Habsburg.

She was the daughter of Archduke Charles II of Austria, the son of Emperor Ferdinand I; and of Maria Anna of Bavaria. Her elder brother Archduke Ferdinand succeeded as Holy Roman Emperor in 1619.

Battle of Ponta Delgada

The naval Battle of Ponta Delgada, Battle of São Miguel or specifically the Battle of Vila Franca do Campo took place on 26 July 1582, off the coast of the island of São Miguel in the Portuguese archipelago of the Azores, during the War of the Portuguese Succession. A combined corsair expedition, mainly French (an Anglo-French fleet with Portuguese forces included), sailed against a Spanish naval force made up of Portuguese and Castilian ships, to preserve control of the Azores under pretender António, Prior of Crato and to defend the islands from incorporation into the Iberian Union—the largest French force sent overseas before the age of Louis XIV.In the first engagement between large fleets of carracks and galleons operating at great distances from the mainland, the mercenary fleet under Filippo di Piero Strozzi was severely defeated by a squadron under Álvaro de Bazán. The Spanish victory resulted in the rapid Spanish conquest of the Azores, completing the incorporation of Portugal into the Spanish Empire.


The Camillians or Clerics Regular, Ministers to the Sick (Latin: Clerci Regulari Ministeri Infirmaribus) are a Roman Catholic religious order, founded in 1582 by St. Camillus de Lellis (1550-1614). A large red cross was chosen by the founder as the distinguishing badge for the members of the Order to wear upon their black cassocks, which was later adopted as the international symbol of medical care. As of 2018, 1080 Camillians serve in 35 countries. They use the postnominal initials of M.I. (Ministri degli Infermi).

Diego, Prince of Asturias

Diego Félix of Austria, Prince of Asturias and Portugal (August 15, 1575 – November 21, 1582) was the fourth son of Philip II of Spain, and also his third son by his fourth wife Anna of Austria.

Gregorian calendar

The Gregorian calendar is the most widely used civil calendar in 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.

The calendar was developed as a correction to the Julian calendar, shortening the average year by 0.0075 days to stop the drift of the calendar with respect to the equinoxes. To deal with the 10 days' difference (between calendar and reality) that this drift had already reached, the date was advanced so that 4 October 1582 was followed by 15 October 1582. There was no discontinuity in the cycle of weekdays or of the Anno Domini calendar era. The reform also altered the lunar cycle used by the Church to calculate the date for Easter (computus), restoring it to the time of the year as originally celebrated by the early Church.

The reform was adopted initially by the Catholic countries of Europe and their overseas possessions. Over the next three centuries, the Protestant and Eastern Orthodox countries also moved to what they called the Improved calendar, with Greece being the last European country to adopt the calendar in 1923. To unambiguously specify a date during the transition period, dual dating is sometimes used to specify both Old Style and New Style dates. Due to globalization in the 20th century, the calendar has also been adopted by most non-Western countries for civil purposes. The calendar era carries the alternative secular name of "Common Era".

Ii Naotora

Ii Naotora (井伊 直虎, d. 12 September 1582) was a daimyō of the Sengoku period. She was the daughter and only child of Ii Naomori, the eighteenth head of their clan.

John Williams (archbishop of York)

John Williams (22 March 1582 – 25 March 1650) was a Welsh clergyman and political advisor to King James I. He served as Bishop of Lincoln 1621–1641, Lord Keeper of the Great Seal 1621–1625, and Archbishop of York 1641–1646. He was the last bishop to serve as lord chancellor.

Livonian campaign of Stephen Báthory

The Livonian campaign of Stephen Báthory (referred to as the Russo-Polish War among Polish historians) took place in the final stage of the Livonian War, between 1577 and 1582. Polish-Lithuanian forces led by Stephen Báthory (Batory), king of Poland and Grand Duke of Lithuania, successfully fought against the army of Ivan IV "the Terrible", tsar of Russia, over the Duchy of Livonia and Polotsk. Russian forces were expelled from Livonia before the campaign was concluded by the Truce of Jam Zapolski.

Oda Nobunaga

Oda Nobunaga (織田 信長, Oda Nobunaga, listen; June 23, 1534 – June 21, 1582) was a powerful daimyō (feudal lord) of Japan in the late 16th century who attempted to unify Japan during the late Sengoku period, and successfully gained control over most of Honshu. Nobunaga is regarded as one of three unifiers of Japan along with his retainers Toyotomi Hideyoshi and Tokugawa Ieyasu. During his later life, Nobunaga was widely known for most brutal suppression of determined opponents, eliminating those who by principle refused to cooperate or yield to his demands. His reign was noted for innovative military tactics, fostering free trade, and encouraging the start of the Momoyama historical art period. He was killed when his retainer Akechi Mitsuhide rebelled against him at Honnō-ji.

Proleptic Gregorian calendar

The proleptic Gregorian calendar is produced by extending the Gregorian calendar backward to dates preceding its official introduction in 1582. In countries that adopted the Gregorian calendar later, dates occurring in the interim (between 1582 and the local adoption) are sometimes "Gregorianized" as well. For example, George Washington was born on February 11, 1731 (Old Style), as Great Britain and its possessions were using the Julian calendar with English years starting on March 25 until September 1752. After the switch, that day became February 22, 1732, which is the date commonly given as Washington's birthday.

Siege of Lier (1582)

The Siege of Lier of 1582, also known as the Capture of Lier or Betrayal of Lier, took place between 1 and 2 August 1582 at Lier, near Antwerp (present-day in the Belgian province of Antwerp, Flemish Region, Belgium), during the Eighty Years' War and the Anglo-Spanish War (1585–1604). On 2 August the Spanish army commanded by Governor-General Don Alexander Farnese, Prince of Parma (Spanish: Alejandro Farnesio), supported by part of the States garrison (a discontent group of Scottish troops led by Captain William Semple), captured and seized the town, defeating the rest of the Dutch, English and German troops under Governor of Lier. All garrison was killed or captured. The news of the Spanish success at Lier produced a great shock to the States-General at Antwerp, where the sense of insecurity was obvious, and many of the Protestant citizens sold their houses, fleeing to the north of Flanders.

The consequences of Semple's action were considerable because Liere was a strategic position, regarded as "the bulwark of Antwerp and the key of the Duchy of Brabant". The betrayal of Bruges in the following year by Colonel Boyd was probably prompted by his countryman's example. After a short visit to Prince Alexander Farnese at Namur, Semple was sent to Spain with a strong recommendation to King Philip II of Spain, who according to the Italian Jesuit Famiano Strada, handsomely rewarded him.The next Spanish success was on 17 November, when the Spaniards led by Johann Baptista von Taxis (Spanish: Juan Baptista de Taxis) captured Steenwijk (taken by Dutch States forces on 23 February 1581) forcing the Protestant troops to surrender.

Siege of Lochem (1582)

The Siege of Lochem also known as the Relief of Lochem was a siege that took place in the Dutch city of Lochem during the Eighty Years' War and the Anglo–Spanish War. The city was relieved by a States army composing of English and French Huguenot troops under Count Philip of Hohenlohe-Neuenstein and William Louis of Nassau-Dillenburg and John Norreys on September 24, 1582. This marked the end of the Spanish siege of the city by the Spanish general Francisco Verdugo.

University of Würzburg

The Julius Maximilian University of Würzburg (also referred to as the University of Würzburg, in German Julius-Maximilians-Universität Würzburg) is a public research university in Würzburg, Germany. The University of Würzburg is one of the oldest institutions of higher learning in Germany, having been founded in 1402. The university initially had a brief run and was closed in 1415. It was reopened in 1582 on the initiative of Julius Echter von Mespelbrunn. Today, the university is named for Julius Echter von Mespelbrunn and Maximilian Joseph.

The University of Würzburg is part of the U15 group of research-intensive German universities. The university is also a member of the Coimbra Group.Adolf-Wuerth-Center for the History of Psychology is a scientific institution of the University

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