1643 (MDCXLIII) was a common year starting on Thursday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1643rd year of the Common Era (CE) and Anno Domini (AD) designations, the 643rd year of the 2nd millennium, the 43rd year of the 17th century, and the 4th year of the 1640s decade. As of the start of 1643, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.

Millennium: 2nd millennium
Centuries: 16th century17th century18th century
Decades: 1610s  1620s  1630s  – 1640s –  1650s  1660s  1670s
Years: 1640 1641 164216431644 1645 1646
1643 in other calendars
Gregorian calendar1643
MDCXLIII
Ab urbe condita2396
Armenian calendar1092
ԹՎ ՌՂԲ
Assyrian calendar6393
Balinese saka calendar1564–1565
Bengali calendar1050
Berber calendar2593
English Regnal year18 Cha. 1 – 19 Cha. 1
Buddhist calendar2187
Burmese calendar1005
Byzantine calendar7151–7152
Chinese calendar壬午(Water Horse)
4339 or 4279
    — to —
癸未年 (Water Goat)
4340 or 4280
Coptic calendar1359–1360
Discordian calendar2809
Ethiopian calendar1635–1636
Hebrew calendar5403–5404
Hindu calendars
 - Vikram Samvat1699–1700
 - Shaka Samvat1564–1565
 - Kali Yuga4743–4744
Holocene calendar11643
Igbo calendar643–644
Iranian calendar1021–1022
Islamic calendar1052–1053
Japanese calendarKan'ei 20
(寛永20年)
Javanese calendar1564–1565
Julian calendarGregorian minus 10 days
Korean calendar3976
Minguo calendar269 before ROC
民前269年
Nanakshahi calendar175
Thai solar calendar2185–2186
Tibetan calendar阳水马年
(male Water-Horse)
1769 or 1388 or 616
    — to —
阴水羊年
(female Water-Goat)
1770 or 1389 or 617

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Deaths

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