1620
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1620 by topic: | |
| Arts and Science | |
| Architecture - Art - Literature - Music - Science | |
| Lists of leaders | |
| State leaders – Colonial governors – Religious leaders | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Works category | |
| Works | |
| Gregorian calendar | 1620 MDCXX |
| Ab urbe condita | 2373 |
| Armenian calendar | 1069 ԹՎ ՌԿԹ |
| Assyrian calendar | 6370 |
| Balinese saka calendar | 1541–1542 |
| Bengali calendar | 1027 |
| Berber calendar | 2570 |
| English Regnal year | 17 Ja. 1 – 18 Ja. 1 |
| Buddhist calendar | 2164 |
| Burmese calendar | 982 |
| Byzantine calendar | 7128–7129 |
| Chinese calendar |
己未年 (Earth Goat) 4316 or 4256 — to — 庚申年 (Metal Monkey) 4317 or 4257 |
| Coptic calendar | 1336–1337 |
| Discordian calendar | 2786 |
| Ethiopian calendar | 1612–1613 |
| Hebrew calendar | 5380–5381 |
| Hindu calendars | |
| - Vikram Samvat | 1676–1677 |
| - Shaka Samvat | 1541–1542 |
| - Kali Yuga | 4720–4721 |
| Holocene calendar | 11620 |
| Igbo calendar | 620–621 |
| Iranian calendar | 998–999 |
| Islamic calendar | 1029–1030 |
| Japanese calendar |
Genna 6 (元和６年) |
| Javanese calendar | 1540–1542 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 3953 |
| Minguo calendar | 292 before ROC 民前292年 |
| Nanakshahi calendar | 152 |
| Thai solar calendar | 2162–2163 |
1620 (MDCXX) was a leap year starting on Wednesday (dominical letter ED) of the Gregorian calendar and a leap year starting on Saturday (dominical letter BA) of the Julian calendar, the 1620th year of the Common Era (CE) and Anno Domini (AD) designations, the 620th year of the 2nd millennium, the 20th year of the 17th century, and the 1st year of the 1620s decade. As of the start of 1620, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
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