622 (DCXXII) was a common year starting on Friday 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. As of the start of 622, the Gregorian calendar was 3 days ahead of the Julian calendar, which was the dominant calendar of the time.

Millennium: 1st millennium
Centuries: 6th century7th century8th century
Decades: 590s  600s  610s  – 620s –  630s  640s  650s
Years: 619 620 621622623 624 625
622 in other calendars
Gregorian calendar622
DCXXII
Ab urbe condita1375
Armenian calendar71
ԹՎ ՀԱ
Assyrian calendar5372
Balinese saka calendar543–544
Bengali calendar29
Berber calendar1572
Buddhist calendar1166
Burmese calendar−16
Byzantine calendar6130–6131
Chinese calendar辛巳(Metal Snake)
3318 or 3258
    — to —
壬午年 (Water Horse)
3319 or 3259
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
DCXXII
Korean calendar2955
Minguo calendar1290 before ROC
民前1290年
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 —
阳水马年
(male Water-Horse)
749 or 368 or −404

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