840

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This article is about the year 840. For the number, see 840 (number).
Millennium: 1st millennium
Centuries: 8th century9th century10th century
Decades: 810s  820s  830s  – 840s –  850s  860s  870s
Years: 837 838 839840841 842 843
840 by topic
Politics
State leadersSovereign states
Birth and death categories
BirthsDeaths
Establishment and disestablishment categories
EstablishmentsDisestablishments
840 in other calendars
Gregorian calendar 840
DCCCXL
Ab urbe condita 1593
Armenian calendar 289
ԹՎ ՄՁԹ
Assyrian calendar 5590
Bahá'í calendar −1004 – −1003
Bengali calendar 247
Berber calendar 1790
English Regnal year N/A
Buddhist calendar 1384
Burmese calendar 202
Byzantine calendar 6348–6349
Chinese calendar 己未(Earth Goat)
3536 or 3476
    — to —
庚申年 (Metal Monkey)
3537 or 3477
Coptic calendar 556–557
Discordian calendar 2006
Ethiopian calendar 832–833
Hebrew calendar 4600–4601
Hindu calendars
 - Vikram Samvat 896–897
 - Shaka Samvat 762–763
 - Kali Yuga 3941–3942
Holocene calendar 10840
Igbo calendar −160 – −159
Iranian calendar 218–219
Islamic calendar 225–226
Japanese calendar Jōwa 7
(承和7年)
Juche calendar N/A
Julian calendar 840
DCCCXL
Korean calendar 3173
Minguo calendar 1072 before ROC
民前1072年
Thai solar calendar 1383

Year 840 (DCCCXL) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar.

Events[edit]

By Place[edit]

Europe[edit]

Asia[edit]


Births[edit]

Deaths[edit]