623 (DCXXIII) was a common year starting on Saturday of the Julian calendar, the 623rd year of the Common Era (CE) and Anno Domini (AD) designations, the 623rd year of the 1st millennium, the 23rd year of the 7th century, and the 4th year of the 620s decade. As of the start of 623, 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: 620 621 622623624 625 626
623 in other calendars
Gregorian calendar623
DCXXIII
Ab urbe condita1376
Armenian calendar72
ԹՎ ՀԲ
Assyrian calendar5373
Balinese saka calendar544–545
Bengali calendar30
Berber calendar1573
Buddhist calendar1167
Burmese calendar−15
Byzantine calendar6131–6132
Chinese calendar壬午(Water Horse)
3319 or 3259
    — to —
癸未年 (Water Goat)
3320 or 3260
Coptic calendar339–340
Discordian calendar1789
Ethiopian calendar615–616
Hebrew calendar4383–4384
Hindu calendars
 - Vikram Samvat679–680
 - Shaka Samvat544–545
 - Kali Yuga3723–3724
Holocene calendar10623
Iranian calendar1–2
Islamic calendar1–2
Japanese calendarN/A
Javanese calendar513–514
Julian calendar623
DCXXIII
Korean calendar2956
Minguo calendar1289 before ROC
民前1289年
Nanakshahi calendar−845
Seleucid era934/935 AG
Thai solar calendar1165–1166
Tibetan calendar阳水马年
(male Water-Horse)
749 or 368 or −404
    — to —
阴水羊年
(female Water-Goat)
750 or 369 or −403

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Europe

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