| Millennium: | 2nd millennium |
|---|---|
| Centuries: | 15th century – 16th century – 17th century |
| Decades: | 1550s 1560s 1570s – 1580s – 1590s 1600s 1610s |
| Years: | 1579 1580 1581 – 1582 – 1583 1584 1585 |
| 1582 by topic | |
| Arts and science | |
| Architecture - Art - Literature - Music - Science | |
| Lists of leaders | |
| Colonial governors - State leaders | |
| Birth and death categories | |
| Births - Deaths | |
| Establishments and disestablishments categories | |
| Establishments - Disestablishments | |
| Works category | |
| Works | |
| Gregorian calendar | 1582 MDLXXXII |
| Ab urbe condita | 2335 |
| Armenian calendar | 1031 ԹՎ ՌԼԱ |
| Assyrian calendar | 6332 |
| Bahá'í calendar | -262–-261 |
| Bengali calendar | 989 |
| Berber calendar | 2532 |
| English Regnal year | 24 Eliz. 1 – 25 Eliz. 1 |
| Buddhist calendar | 2126 |
| Burmese calendar | 944 |
| Byzantine calendar | 7090–7091 |
| Chinese calendar | 辛巳年十二月初七日 (4218/4278-12-7) — to —
壬午年十二月初七日(4219/4279-12-7) |
| Coptic calendar | 1298–1299 |
| Ethiopian calendar | 1574–1575 |
| Hebrew calendar | 5342–5343 |
| Hindu calendars | |
| - Vikram Samvat | 1638–1639 |
| - Shaka Samvat | 1504–1505 |
| - Kali Yuga | 4683–4684 |
| Holocene calendar | 11582 |
| Iranian calendar | 960–961 |
| Islamic calendar | 989–990 |
| Japanese calendar | Tenshō 10 (天正10年) |
| Korean calendar | 3915 |
| Minguo calendar | 330 before ROC 民前330年 |
| Thai solar calendar | 2125 |
Year 1582 (MDLXXXII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. However, this year also saw the beginning of the Gregorian Calendar switch, when a Papal bull introduced the Gregorian calendar, adopted by Spain, Portugal, the Polish-Lithuanian Commonwealth and most of present-day Italy from the start. In these countries, the year continued as normal until Thursday, October 4. However, the next day became Friday, October 15 (like a common year starting on Friday), in those countries (France followed two months later, letting Sunday, December 9 be followed by Monday, December 20). Other countries continued using the Julian calendar, switching calendars in later years, and the complete conversion of the Gregorian calendar was not entirely done until 1929.