1084

1084 in various calendars
Gregorian calendar	1084; MLXXXIV
Ab urbe condita	1837
Armenian calendar	533; ԹՎ ՇԼԳ
Assyrian calendar	5834
Balinese saka calendar	1005–1006
Bengali calendar	490–491
Berber calendar	2034
English Regnal year	18 Will. 1 – 19 Will. 1
Buddhist calendar	1628
Burmese calendar	446
Byzantine calendar	6592–6593
Chinese calendar	癸亥年 (Water Pig); 3781 or 3574; — to —; 甲子年 (Wood Rat); 3782 or 3575
Coptic calendar	800–801
Discordian calendar	2250
Ethiopian calendar	1076–1077
Hebrew calendar	4844–4845
Hindu calendars
- Vikram Samvat	1140–1141
- Shaka Samvat	1005–1006
- Kali Yuga	4184–4185
Holocene calendar	11084
Igbo calendar	84–85
Iranian calendar	462–463
Islamic calendar	476–477
Japanese calendar	Eihō 4 / Ōtoku 1; (応徳元年)
Javanese calendar	988–989
Julian calendar	1084; MLXXXIV
Korean calendar	3417
Minguo calendar	828 before ROC; 民前828年
Nanakshahi calendar	−384
Seleucid era	1395/1396 AG
Thai solar calendar	1626–1627
Tibetan calendar	阴水猪年; (female Water-Pig); 1210 or 829 or 57; — to —; 阳木鼠年; (male Wood-Rat); 1211 or 830 or 58

Millennium:	2nd millennium
Centuries:	10th century; 11th century ; 12th century;
Decades:	1060s; 1070s; 1080s ; 1090s; 1100s;
Years:	1081; 1082; 1083; 1084 ; 1085; 1086; 1087;
	v; t; e;

Events

March 31 – Emperor Henry IV besieges Rome and enters the city. He is crowned Holy Roman Emperor by Antipope Clement III in Rome and receives the patrician authority.^[1]
May – Sack of Rome: Duke Robert Guiscard leads a Norman army (36,000 men) north and enters Rome; the city is sacked, and Henry IV is forced to retreat.
Robert Guiscard returns with 150 warships in Illyria (modern Albania), and occupies Corfu and Kefalonia with the support of Ragusa and the Dalmatian city-states.
King Halsten Stenkilsson is killed and his brother Inge the Elder is deposed in Svealand (modern Sweden). Inge is replaced by his brother-in-law Blot-Sweyn.

The Seljuk Turks under Sultan Malik-Shah I conquer Byzantine Antioch, held by Philaretos Brachamios, an Armenian general, who seizes power as a usurper.

Sima Guang, Chinese chancellor and historian, with a group of scholars, completes the Zizhi Tongjian, a chronicle of universal history of China.
April 21 – King Kyansittha begins his reign as ruler of the Pagan Kingdom in Burma (modern Myanmar).^[2]

Pope Gregory VII, who has been forced by the presence in Rome of Henry IV to retreat to the Castel Sant'Angelo, is freed by Robert Guiscard and restores papal authority in Rome.
Bruno of Cologne founds the Carthusian Order which includes both monks and nuns. He builds a hermitage in the French Alps.^[3]
Building work starts on Worcester Cathedral in England, orchestrated by Bishop Wulfstan.

^ "Henry IV, Holy Roman Emperor". Encyclopedia Britannica. Retrieved August 8, 2018.
^ E, Harvey G. (2000). History of Burma. Asian Educational Services. p. 36. ISBN 9788120613652.
^ "Carthusian religious order". Encyclopedia Britannica. Retrieved August 8, 2018.