1640

Millennium: 2nd millennium
Centuries:
Decades:
Years:
August 28: The Scottish Covenanters defeat the English Army in the Battle of Newburn.
1640 in various calendars
Gregorian calendar1640
MDCXL
Ab urbe condita2393
Armenian calendar1089
ԹՎ ՌՁԹ
Assyrian calendar6390
Balinese saka calendar1561–1562
Bengali calendar1047
Berber calendar2590
English Regnal year15 Cha. 1 – 16 Cha. 1
Buddhist calendar2184
Burmese calendar1002
Byzantine calendar7148–7149
Chinese calendar己卯年 (Earth Rabbit)
4337 or 4130
    — to —
庚辰年 (Metal Dragon)
4338 or 4131
Coptic calendar1356–1357
Discordian calendar2806
Ethiopian calendar1632–1633
Hebrew calendar5400–5401
Hindu calendars
 - Vikram Samvat1696–1697
 - Shaka Samvat1561–1562
 - Kali Yuga4740–4741
Holocene calendar11640
Igbo calendar640–641
Iranian calendar1018–1019
Islamic calendar1049–1050
Japanese calendarKan'ei 17
(寛永17年)
Javanese calendar1561–1562
Julian calendarGregorian minus 10 days
Korean calendar3973
Minguo calendar272 before ROC
民前272年
Nanakshahi calendar172
Thai solar calendar2182–2183
Tibetan calendar阴土兔年
(female Earth-Rabbit)
1766 or 1385 or 613
    — to —
阳金龙年
(male Iron-Dragon)
1767 or 1386 or 614

1640 (MDCXL) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Wednesday of the Julian calendar, the 1640th year of the Common Era (CE) and Anno Domini (AD) designations, the 640th year of the 2nd millennium, the 40th year of the 17th century, and the 1st year of the 1640s decade. As of the start of 1640, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.