621

This article is about the year 621. For other uses, see 621 (disambiguation).

Millennium:	1st millennium
Centuries:	6th century · 7th century · 8th century
Decades:	590s · 600s · 610s · 620s · 630s · 640s · 650s
Years:	618 · 619 · 620 · 621 · 622 · 623 · 624

621 by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishment and disestablishment categories
Establishments – Disestablishments

621 in various calendars
Gregorian calendar	621 DCXXI
Ab urbe condita	1374
Armenian calendar	70 ԹՎ Հ
Assyrian calendar	5371
Bengali calendar	28
Berber calendar	1571
Buddhist calendar	1165
Burmese calendar	−17
Byzantine calendar	6129–6130
Chinese calendar	庚辰年 (Metal Dragon) 3317 or 3257 — to — 辛巳年 (Metal Snake) 3318 or 3258
Coptic calendar	337–338
Discordian calendar	1787
Ethiopian calendar	613–614
Hebrew calendar	4381–4382
Hindu calendars
- Vikram Samvat	677–678
- Shaka Samvat	542–543
- Kali Yuga	3721–3722
Holocene calendar	10621
Iranian calendar	1 BP – 0 BP
Islamic calendar	1 BH – 0 BH
Japanese calendar	N/A
Javanese calendar	511–512
Julian calendar	621 DCXXI
Korean calendar	2954
Minguo calendar	1291 before ROC 民前1291年
Nanakshahi calendar	−847
Seleucid era	932/933 AG
Thai solar calendar	1163–1164

Wikimedia Commons has media related to 621.

King Sisebut of the Visigoths (ca. 565–621)

Year 621 (DCXXI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. The denomination 621 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

Emperor Heraclius concludes a peace agreement (in exchange for an annual tribute) with the Avars on the Balkan Peninsula, giving him free hand to assemble Byzantine forces in Asia Minor for a non-military expenditure against the Persian Empire.^[1]

King Sisebut dies after a 9-year reign and is succeeded by his son Reccared II (just a child).^[2] He is placed on the throne by the Visigothic nobility, but dies after two months. Suintila, half-uncle and regent, becomes king of the Visigothic Kingdom.

Emperor Gaozu delegates control of his military and civil administration in the east to his second son, Li Shimin. He concentrates on reforming coinage and taxation.
May 28 – Battle of Hulao: Li Shimin defeats the numerically superior Chinese army of Dou Jiande near the Hulao Pass.
June 4 – Wang Shichong, self-declared emperor, surrenders to Li Shimin at Luoyang following Dou Jiande's defeat. Gaozu spares his life, but he is later assassinated.

According to the Quran, Muhammad, Islamic prophet, is said to have visited heaven aboard the steed/unicorn with wings or Buraq, in the Isra wal-Miraj, (the Night Journey), from Mecca and then to heaven from Jerusalem's Temple Mount, then back to Mecca.

The Chinese establish an imperial bureau for the manufacture of porcelain. Their technology will advance further under the Tang Dynasty (approximate date).

↑ The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century (1991), John V.A. Fine, Jr, p. 42. ISBN 978-0472-08149-3
↑ Roger Collins, "Visigothic Spain 409–711", p. 76

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