Year 840 (DCCCXL) was a leap year starting on Thursday in the Julian calendar, the 840th year of the Common Era (CE) and Anno Domini (AD) designations, the 840th year of the 1st millennium, the 40th year of the 9th century, and the 1st year of the 840s decade.

Millennium: 1st millennium
Centuries:
Decades:
Years:
840 in various calendars
Gregorian calendar840
DCCCXL
Ab urbe condita1593
Armenian calendar289
ԹՎ ՄՁԹ
Assyrian calendar5590
Balinese saka calendar761–762
Bengali calendar247
Berber calendar1790
Buddhist calendar1384
Burmese calendar202
Byzantine calendar6348–6349
Chinese calendar己未年 (Earth Goat)
3537 or 3330
    — to —
庚申年 (Metal Monkey)
3538 or 3331
Coptic calendar556–557
Discordian calendar2006
Ethiopian calendar832–833
Hebrew calendar4600–4601
Hindu calendars
 - Vikram Samvat896–897
 - Shaka Samvat761–762
 - Kali Yuga3940–3941
Holocene calendar10840
Iranian calendar218–219
Islamic calendar225–226
Japanese calendarJōwa 7
(承和7年)
Javanese calendar737–738
Julian calendar840
DCCCXL
Korean calendar3173
Minguo calendar1072 before ROC
民前1072年
Nanakshahi calendar−628
Seleucid era1151/1152 AG
Thai solar calendar1382–1383
Tibetan calendar阴土羊年
(female Earth-Goat)
966 or 585 or −187
    — to —
阳金猴年
(male Iron-Monkey)
967 or 586 or −186
Emperor Lothair I (795–855)

Events

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By place

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Europe

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Britain

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Asia

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By topic

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Religion

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Births

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Deaths

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References

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  1. ^ Zaluckyj & Zaluckyj, "Decline"
  2. ^ History of Central Asia.
  3. ^ Guidoboni, Traina, 1995, p. 121

Sources

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  • Guidoboni, Emanuela; Traina, Giusto (1995), "A new catalogue of earthquakes in the historical Armenian area from antiquity to the 12th century", Annals of Geophysics, 38, doi:10.4401/ag-4134