1521

Millennium:	2nd millennium
Centuries:	15th century – 16th century – 17th century
Decades:	1490s  1500s  1510s  – 1520s –  1530s  1540s  1550s
Years:	1518 1519 1520 – 1521 – 1522 1523 1524

1521 in other calendars

Gregorian calendar	1521 MDXXI
Ab urbe condita	2274
Armenian calendar	970 ԹՎ ՋՀ
Assyrian calendar	6271
Balinese saka calendar	1442–1443
Bengali calendar	928
Berber calendar	2471
English Regnal year	12 Hen. 8 – 13 Hen. 8
Buddhist calendar	2065
Burmese calendar	883
Byzantine calendar	7029–7030
Chinese calendar	庚辰年 (Metal Dragon) 4217 or 4157     — to — 辛巳年 (Metal Snake) 4218 or 4158
Coptic calendar	1237–1238
Discordian calendar	2687
Ethiopian calendar	1513–1514
Hebrew calendar	5281–5282
Hindu calendars
- Vikram Samvat	1577–1578
- Shaka Samvat	1442–1443
- Kali Yuga	4621–4622
Holocene calendar	11521
Igbo calendar	521–522
Iranian calendar	899–900
Islamic calendar	927–928
Japanese calendar	Eishō 18 / Daiei 1 (大永元年)
Javanese calendar	1438–1439
Julian calendar	1521 MDXXI
Korean calendar	3854
Minguo calendar	391 before ROC 民前391年
Nanakshahi calendar	53
Thai solar calendar	2063–2064
Tibetan calendar	阳金龙年 (male Iron-Dragon) 1647 or 1266 or 494     — to — 阴金蛇年 (female Iron-Snake) 1648 or 1267 or 495

1521 (MDXXI) was a common year starting on Tuesday of the Julian calendar, the 1521st year of the Common Era (CE) and Anno Domini (AD) designations, the 521st year of the 2nd millennium, the 21st year of the 16th century, and the 2nd year of the 1520s decade. As of the start of 1521, the Gregorian calendar was 10 days ahead of the Julian calendar, which was the dominant calendar of the time.

Events

• April 17 – Martin Luther speaks to the assembly at the Diet of Worms, refusing to recant his teachings.
• May 17 – Edward Stafford, 3rd Duke of Buckingham, is executed for treason.
• August 13 – The ruler of the Aztec Empire surrenders to Spanish conquistadors. This ends the Aztec Empire.
• August 29 – The Ottoman Turks capture Nándorfehérvár, now known as Belgrade

Births

• July – Juan Ponce Enrile (b. 1460)
• August 4 – Pope Urban VII (d. 1590)

Deaths

• April 21 – Ferdinand Magellan (b. 1480)