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Millennium: 1st millennium
622 in various calendars
Gregorian calendar622
Ab urbe condita1375
Armenian calendar71
Assyrian calendar5372
Balinese saka calendar543–544
Bengali calendar29
Berber calendar1572
Buddhist calendar1166
Burmese calendar−16
Byzantine calendar6130–6131
Chinese calendar辛巳年 (Metal Snake)
3319 or 3112
    — to —
壬午年 (Water Horse)
3320 or 3113
Coptic calendar338–339
Discordian calendar1788
Ethiopian calendar614–615
Hebrew calendar4382–4383
Hindu calendars
 - Vikram Samvat678–679
 - Shaka Samvat543–544
 - Kali Yuga3722–3723
Holocene calendar10622
Iranian calendar0–1
Islamic calendar0–1
Japanese calendarN/A
Javanese calendar512–513
Julian calendar622
Korean calendar2955
Minguo calendar1290 before ROC
Nanakshahi calendar−846
Seleucid era933/934 AG
Thai solar calendar1164–1165
Tibetan calendar阴金蛇年
(female Iron-Snake)
748 or 367 or −405
    — to —
(male Water-Horse)
749 or 368 or −404
Muhammad's tomb (Green Dome) in Medina

Year 622 (DCXXII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar, the 622nd year of the Common Era (CE) and Anno Domini (AD) designations, the 622nd year of the 1st millennium, the 22nd year of the 7th century, and the 3rd year of the 620s decade. The denomination 622 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.


By place[edit]

Byzantine Empire[edit]


Central America[edit]

By topic[edit]


  • September 9[2] or June 17[3] – The Islamic prophet Muhammad, after being warned of a plot to assassinate him, secretly leaves his home in Mecca to make the Hijrah (emigrate) to Yathrib (later renamed by him Medina), along with his companion Abu Bakr. They take refuge in the Cave of Thawr south of Mecca for three days, departing on September 13 or June 21.
  • September 20[2] or June 28[3] – Muhammad does not enter Yathrib directly, but stops at its outlying environs of Quba. He establishes the Quba Mosque here, the first mosque of Islam. On July 2 (or September 24) he makes his first visit to Yathrib for Friday prayers.
  • October 4[2] or July 13 – After a fourteen days' stay in Quba, Muhammad finally moves from Quba to Yathrib, and is greeted cordially by its people. Here he drafts the Constitution of Medina, an agreement between the various Muslim, Jewish, Christian and pagan tribal communities in the city, forming the basis of a multi-religious Islamic state, and begins construction of the Al-Masjid an-Nabawi Mosque. Later during the caliphate of Umar in 638, the lunar year during which the emigration to Medina occurred (Friday 16 July 622 – 4 July 623) is designated "Year One" of the new Hijri era (Anno Hegirae – AH).
  • Xuanzang is fully ordained as a Buddhist monk at the age of 20.[4]




  1. ^ Kaegi 2003, p. 116.
  2. ^ a b c Shamsi, F. A. (1984). "The Date of Hijrah". Islamic Studies. 23: 189–224, 289–323.
  3. ^ a b Shaikh, Fazlur Rehman (2001). Chronology of Prophetic Events. London: Ta-Ha Publishers. pp. 51–52.
  4. ^ Howgego, Raymond John (2003). Encyclopedia of Exploration to 1800. Hordern House. p. 522. ISBN 978-1-875567-36-2.
  5. ^ Illustrated Dictionary of the Muslim World. Marshall Cavendish. 2010. pp. 122–123. ISBN 978-0-7614-7929-1.
  6. ^ DeBlasi, Anthony (2002). Reform in the balance: the defense of literary culture in mid-Tang China. SUNY Press. p. 170. ISBN 978-0-7914-5436-7.
  7. ^ The New Encyclopædia Britannica: Micropædia (15th ed.). 1991. p. 765. ISBN 978-0-85229-529-8.
  8. ^ Holtzclaw, R. Fulton (1980). The Saints Go Marching In. Keeble Press. p. 24. ISBN 9780933144002.
  9. ^ Woo, X. L. (2008). "622&pg=PA19 Empress Wu the Great: Tang Dynasty China. Algora Publishing. p. 19. ISBN 978-0-87586-660-4.