1630 (MDCXXX) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Friday of the Julian calendar, the 1630th year of the Common Era (CE) and Anno Domini (AD) designations, the 630th year of the 2nd millennium, the 30th year of the 17th century, and the 1st year of the 1630s decade. As of the start of 1630, 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: 1627 1628 162916301631 1632 1633
1630 in other calendars
Gregorian calendar1630
MDCXXX
Ab urbe condita2383
Armenian calendar1079
ԹՎ ՌՀԹ
Assyrian calendar6380
Balinese saka calendar1551–1552
Bengali calendar1037
Berber calendar2580
English Regnal yearCha. 1 – 6 Cha. 1
Buddhist calendar2174
Burmese calendar992
Byzantine calendar7138–7139
Chinese calendar己巳(Earth Snake)
4326 or 4266
    — to —
庚午年 (Metal Horse)
4327 or 4267
Coptic calendar1346–1347
Discordian calendar2796
Ethiopian calendar1622–1623
Hebrew calendar5390–5391
Hindu calendars
 - Vikram Samvat1686–1687
 - Shaka Samvat1551–1552
 - Kali Yuga4730–4731
Holocene calendar11630
Igbo calendar630–631
Iranian calendar1008–1009
Islamic calendar1039–1040
Japanese calendarKan'ei 7
(寛永7年)
Javanese calendar1551–1552
Julian calendarGregorian minus 10 days
Korean calendar3963
Minguo calendar282 before ROC
民前282年
Nanakshahi calendar162
Thai solar calendar2172–2173
Tibetan calendar阴土蛇年
(female Earth-Snake)
1756 or 1375 or 603
    — to —
阳金马年
(male Iron-Horse)
1757 or 1376 or 604

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