1591

1591 (MDXCI) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1591st year of the Common Era (CE) and Anno Domini (AD) designations, the 591st year of the 2nd millennium, the 91st year of the 16th century, and the 2nd year of the 1590s decade. As of the start of 1591, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium:	2nd millennium
Centuries:	15th century – 16th century – 17th century
Decades:	1560s  1570s  1580s  – 1590s –  1600s  1610s  1620s
Years:	1588 1589 1590 – 1591 – 1592 1593 1594

1591 in other calendars

Gregorian calendar	1591 MDXCI
Ab urbe condita	2344
Armenian calendar	1040 ԹՎ ՌԽ
Assyrian calendar	6341
Balinese saka calendar	1512–1513
Bengali calendar	998
Berber calendar	2541
English Regnal year	33 Eliz. 1 – 34 Eliz. 1
Buddhist calendar	2135
Burmese calendar	953
Byzantine calendar	7099–7100
Chinese calendar	庚寅年 (Metal Tiger) 4287 or 4227     — to — 辛卯年 (Metal Rabbit) 4288 or 4228
Coptic calendar	1307–1308
Discordian calendar	2757
Ethiopian calendar	1583–1584
Hebrew calendar	5351–5352
Hindu calendars
- Vikram Samvat	1647–1648
- Shaka Samvat	1512–1513
- Kali Yuga	4691–4692
Holocene calendar	11591
Igbo calendar	591–592
Iranian calendar	969–970
Islamic calendar	999–1000
Japanese calendar	Tenshō 19 (天正１９年)
Javanese calendar	1511–1512
Julian calendar	Gregorian minus 10 days
Korean calendar	3924
Minguo calendar	321 before ROC 民前321年
Nanakshahi calendar	123
Thai solar calendar	2133–2134
Tibetan calendar	ལྕགས་ཕོ་སྟག་ལོ་ (male Iron-Tiger) 1717 or 1336 or 564     — to — ལྕགས་མོ་ཡོས་ལོ་ (female Iron-Hare) 1718 or 1337 or 565

Events

• August 30 – The Battle of Flores begins
• November 11 – King Henry IV of France begins the siege of Rouen.