1623
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1623 by topic: | |
| Arts and Science | |
| Architecture - Art - Literature - Music - Science | |
| Lists of leaders | |
| State leaders – Colonial & territorial governors – Religious leaders | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Works category | |
| Works | |
| Gregorian calendar | 1623 MDCXXIII |
| Ab urbe condita | 2376 |
| Armenian calendar | 1072 ԹՎ ՌՀԲ |
| Assyrian calendar | 6373 |
| Bengali calendar | 1030 |
| Berber calendar | 2573 |
| English Regnal year | 20 Ja. 1 – 21 Ja. 1 |
| Buddhist calendar | 2167 |
| Burmese calendar | 985 |
| Byzantine calendar | 7131–7132 |
| Chinese calendar |
壬戌年 (Water Dog) 4319 or 4259 — to — 癸亥年 (Water Pig) 4320 or 4260 |
| Coptic calendar | 1339–1340 |
| Discordian calendar | 2789 |
| Ethiopian calendar | 1615–1616 |
| Hebrew calendar | 5383–5384 |
| Hindu calendars | |
| - Vikram Samvat | 1679–1680 |
| - Shaka Samvat | 1544–1545 |
| - Kali Yuga | 4723–4724 |
| Holocene calendar | 11623 |
| Igbo calendar | 623–624 |
| Iranian calendar | 1001–1002 |
| Islamic calendar | 1032–1033 |
| Japanese calendar |
Genna 9 (元和９年) |
| Javanese calendar | 1544–1545 |
| Julian calendar | Gregorian minus 10 days |
| Korean calendar | 3956 |
| Minguo calendar | 289 before ROC 民前289年 |
| Nanakshahi calendar | 155 |
| Thai solar calendar | 2165–2166 |
1623 (MDCXXIII) was a common year starting on Sunday (dominical letter A) of the Gregorian calendar and a common year starting on Wednesday (dominical letter E) of the Julian calendar, the 1623rd year of the Common Era (CE) and Anno Domini (AD) designations, the 623rd year of the 2nd millennium, the 23rd year of the 17th century, and the 4th year of the 1620s decade. As of the start of 1623, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
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