1421

1421 (MCDXXI) was a common year starting on Wednesday of the Julian calendar, the 1421st year of the Common Era (CE) and Anno Domini (AD) designations, the 421st year of the 2nd millennium, the 21st year of the 15th century, and the 2nd year of the 1420s decade. As of the start of 1421, the Gregorian calendar was 9 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium:	2nd millennium
Centuries:	14th century – 15th century – 16th century
Decades:	1390s  1400s  1410s  – 1420s –  1430s  1440s  1450s
Years:	1418 1419 1420 – 1421 – 1422 1423 1424

1421 in other calendars

Gregorian calendar	1421 MCDXXI
Ab urbe condita	2174
Armenian calendar	870 ԹՎ ՊՀ
Assyrian calendar	6171
Balinese saka calendar	1342–1343
Bengali calendar	828
Berber calendar	2371
English Regnal year	8 Hen. 5 – 9 Hen. 5
Buddhist calendar	1965
Burmese calendar	783
Byzantine calendar	6929–6930
Chinese calendar	庚子年 (Metal Rat) 4117 or 4057     — to — 辛丑年 (Metal Ox) 4118 or 4058
Coptic calendar	1137–1138
Discordian calendar	2587
Ethiopian calendar	1413–1414
Hebrew calendar	5181–5182
Hindu calendars
- Vikram Samvat	1477–1478
- Shaka Samvat	1342–1343
- Kali Yuga	4521–4522
Holocene calendar	11421
Igbo calendar	421–422
Iranian calendar	799–800
Islamic calendar	823–824
Japanese calendar	Ōei 28 (応永２８年)
Javanese calendar	1335–1336
Julian calendar	1421 MCDXXI
Korean calendar	3754
Minguo calendar	491 before ROC 民前491年
Nanakshahi calendar	−47
Thai solar calendar	1963–1964
Tibetan calendar	阳金鼠年 (male Iron-Rat) 1547 or 1166 or 394     — to — 阴金牛年 (female Iron-Ox) 1548 or 1167 or 395

Events

• March 21 – Battle of Baugé. A small French force surprises and defeats a smaller English force under Thomas, Duke of Clarence, a brother of Henry V of England, in Normandy.
• May 26 – Mehmed I, Sultan of the Ottoman Empire dies and is succeeded by his son Murad II.
• November 17–19 – St. Elizabeth flood. The coastal area near Dordrecht in the Netherlands was flooded due to an extremely high tide of the North Sea. 72 villages were drowned, killing about 10,000 people.
• John III of Dampierre, Marquis of Namur, sells his estates to Philip the Good, Duke of Burgundy.
• The first patent is issued by the Republic of Florence.
• In a theory proposed by Gavin Menzies, supposedly the year that Chinese explorer Hong Bao and Zhou Wen discovered the Americas, beating Columbus by about 70 years.

1421 in other calendars

Gregorian calendar	1421 MCDXXI
Ab urbe condita	2174
Armenian calendar	870 ԹՎ ՊՀ
Assyrian calendar	6171
Balinese saka calendar	1342–1343
Bengali calendar	828
Berber calendar	2371
English Regnal year	8 Hen. 5 – 9 Hen. 5
Buddhist calendar	1965
Burmese calendar	783
Byzantine calendar	6929–6930
Chinese calendar	庚子年 (Metal Rat) 4117 or 4057     — to — 辛丑年 (Metal Ox) 4118 or 4058
Coptic calendar	1137–1138
Discordian calendar	2587
Ethiopian calendar	1413–1414
Hebrew calendar	5181–5182
Hindu calendars
- Vikram Samvat	1477–1478
- Shaka Samvat	1342–1343
- Kali Yuga	4521–4522
Holocene calendar	11421
Igbo calendar	421–422
Iranian calendar	799–800
Islamic calendar	823–824
Japanese calendar	Ōei 28 (応永２８年)
Javanese calendar	1335–1336
Julian calendar	1421 MCDXXI
Korean calendar	3754
Minguo calendar	491 before ROC 民前491年
Nanakshahi calendar	−47
Thai solar calendar	1963–1964
Tibetan calendar	阳金鼠年 (male Iron-Rat) 1547 or 1166 or 394     — to — 阴金牛年 (female Iron-Ox) 1548 or 1167 or 395

Births

• July 25 – Henry Percy, 3rd Earl of Northumberland, English politician (died 1461)
• December 6 – King Henry VI of England (died 1471)
• date unknown
  • Sogi, Buddhist priest and Japanese poet (died 1502)
  • Agnès Sorel, mistress of Charles VII of France
  • Ponhea Yat, ruler of the Khmer Empire (died 1467)

Deaths

• January 21 – Niccolò I Trinci, lord of Foligno (assassinated)
• March 22 – Thomas of Lancaster, 1st Duke of Clarence, second son of Henry IV of England (killed in battle) (born 1388)
• May – Balša III, ruler of Zeta
• May 26 – Mehmed I, Ottoman Sultan (b. 1389)
• date unknown – John FitzAlan, 13th Earl of Arundel (born 1385)