1671

1671 (MDCLXXI) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1671st year of the Common Era (CE) and Anno Domini (AD) designations, the 671st year of the 2nd millennium, the 71st year of the 17th century, and the 2nd year of the 1670s decade. As of the start of 1671, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium:	2nd millennium
Centuries:	16th century – 17th century – 18th century
Decades:	1640s  1650s  1660s  – 1670s –  1680s  1690s  1700s
Years:	1668 1669 1670 – 1671 – 1672 1673 1674

1671 in other calendars

Gregorian calendar	1671 MDCLXXI
Ab urbe condita	2424
Armenian calendar	1120 ԹՎ ՌՃԻ
Assyrian calendar	6421
Balinese saka calendar	1592–1593
Bengali calendar	1078
Berber calendar	2621
English Regnal year	22 Cha. 2 – 23 Cha. 2
Buddhist calendar	2215
Burmese calendar	1033
Byzantine calendar	7179–7180
Chinese calendar	庚戌年 (Metal Dog) 4367 or 4307     — to — 辛亥年 (Metal Pig) 4368 or 4308
Coptic calendar	1387–1388
Discordian calendar	2837
Ethiopian calendar	1663–1664
Hebrew calendar	5431–5432
Hindu calendars
- Vikram Samvat	1727–1728
- Shaka Samvat	1592–1593
- Kali Yuga	4771–4772
Holocene calendar	11671
Igbo calendar	671–672
Iranian calendar	1049–1050
Islamic calendar	1081–1082
Japanese calendar	Kanbun 10 (寛文１０年)
Javanese calendar	1593–1594
Julian calendar	Gregorian minus 10 days
Korean calendar	4004
Minguo calendar	241 before ROC 民前241年
Nanakshahi calendar	203
Thai solar calendar	2213–2214
Tibetan calendar	ལྕགས་ཕོ་ཁྱི་ལོ་ (male Iron-Dog) 1797 or 1416 or 644     — to — ལྕགས་མོ་ཕག་ལོ་ (female Iron-Boar) 1798 or 1417 or 645

Events

• April – Battle of Saraighat. The Ahom general Lachit Borphukan defeated the Mughal forces on the outskirts of present-day Guwahati of then sovereign Assam.
• May 9 – Thomas Blood, disguised as a clergyman, attempts to steal the Crown Jewels from the Tower of London. He is immediately caught because he is too drunk to run with the loot. He would later be condemned to death and then mysteriously pardoned and exiled by King Charles II.
• June 22 – Ottoman Empire declares war on Poland

Births

• April 21 - John Law, Scottish economist
• May 24 - Gian Gastone de' Medici, Grand Duke of Tuscany

Deaths

• June 11 - Yun Seon-do, Korean politician