1634 (MDCXXXIV) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1634th year of the Common Era (CE) and Anno Domini (AD) designations, the 634th year of the 2nd millennium, the 34th year of the 17th century, and the 5th year of the 1630s decade. As of the start of 1634, 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: 1600s  1610s  1620s  – 1630s –  1640s  1650s  1660s
Years: 1631 1632 163316341635 1636 1637
1634 in other calendars
Gregorian calendar1634
Ab urbe condita2387
Armenian calendar1083
Assyrian calendar6384
Balinese saka calendar1555–1556
Bengali calendar1041
Berber calendar2584
English Regnal yearCha. 1 – 10 Cha. 1
Buddhist calendar2178
Burmese calendar996
Byzantine calendar7142–7143
Chinese calendar癸酉(Water Rooster)
4330 or 4270
    — to —
甲戌年 (Wood Dog)
4331 or 4271
Coptic calendar1350–1351
Discordian calendar2800
Ethiopian calendar1626–1627
Hebrew calendar5394–5395
Hindu calendars
 - Vikram Samvat1690–1691
 - Shaka Samvat1555–1556
 - Kali Yuga4734–4735
Holocene calendar11634
Igbo calendar634–635
Iranian calendar1012–1013
Islamic calendar1043–1044
Japanese calendarKan'ei 11
Javanese calendar1555–1556
Julian calendarGregorian minus 10 days
Korean calendar3967
Minguo calendar278 before ROC
Nanakshahi calendar166
Thai solar calendar2176–2177
Tibetan calendar阴水鸡年
(female Water-Rooster)
1760 or 1379 or 607
    — to —
(male Wood-Dog)
1761 or 1380 or 608

Events change

Deaths change