421

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Millennium: 1st millennium
Centuries:
Decades:
Years:
421 in various calendars
Gregorian calendar421
CDXXI
Ab urbe condita1174
Assyrian calendar5171
Balinese saka calendar342–343
Bengali calendar−172
Berber calendar1371
Buddhist calendar965
Burmese calendar−217
Byzantine calendar5929–5930
Chinese calendar庚申(Metal Monkey)
3117 or 3057
    — to —
辛酉年 (Metal Rooster)
3118 or 3058
Coptic calendar137–138
Discordian calendar1587
Ethiopian calendar413–414
Hebrew calendar4181–4182
Hindu calendars
 - Vikram Samvat477–478
 - Shaka Samvat342–343
 - Kali Yuga3521–3522
Holocene calendar10421
Iranian calendar201 BP – 200 BP
Islamic calendar207 BH – 206 BH
Javanese calendar305–306
Julian calendar421
CDXXI
Korean calendar2754
Minguo calendar1491 before ROC
民前1491年
Nanakshahi calendar−1047
Seleucid era732/733 AG
Thai solar calendar963–964
Tibetan calendar阳金猴年
(male Iron-Monkey)
547 or 166 or −606
    — to —
阴金鸡年
(female Iron-Rooster)
548 or 167 or −605

Year 421 (CDXXI) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Agricola and Eustathius (or, less frequently, year 1174 Ab urbe condita). The denomination 421 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.

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Roman Empire[edit]

Europe[edit]

Persia[edit]


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References[edit]

  1. ^ "Constantius III | Biography & Facts". Encyclopedia Britannica. Retrieved March 17, 2019.