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This article is about the year 40. For the number, see 40 (number). For other uses, see 40 (disambiguation).
Millennium: 1st millennium
Centuries: 1st century BC1st century2nd century
Decades: 10s  20s  30s  – 40s –  50s  60s  70s
Years: 37 38 394041 42 43
40 by topic
State leadersSovereign states
Birth and death categories
Establishment and disestablishment categories
40 in other calendars
Gregorian calendar 40
Ab urbe condita 793
Armenian calendar N/A
Assyrian calendar 4790
Bahá'í calendar −1804 – −1803
Bengali calendar −553
Berber calendar 990
English Regnal year N/A
Buddhist calendar 584
Burmese calendar −598
Byzantine calendar 5548–5549
Chinese calendar 己亥(Earth Pig)
2736 or 2676
    — to —
庚子年 (Metal Rat)
2737 or 2677
Coptic calendar −244 – −243
Discordian calendar 1206
Ethiopian calendar 32–33
Hebrew calendar 3800–3801
Hindu calendars
 - Vikram Samvat 96–97
 - Shaka Samvat N/A
 - Kali Yuga 3141–3142
Holocene calendar 10040
Igbo calendar −960 – −959
Iranian calendar 582 BP – 581 BP
Islamic calendar 600 BH – 599 BH
Japanese calendar N/A
Juche calendar N/A
Julian calendar 40
Korean calendar 2373
Minguo calendar 1872 before ROC
Thai solar calendar 583

Year 40 (XL) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Augustus without colleague (or, less frequently, year 793 Ab urbe condita). The denomination 40 for this year has been used since the Early Middle Ages, when the Anno Domini calendar era became the prevalent method in Europe for naming years.


By place[edit]

Roman Empire[edit]



By topic[edit]

Arts and sciences[edit]

  • Philo teaches that all men are born free.





  1. ^ Fabre, Guilhem; Fiches, Jean-Luc; Paillet, Jean-Louis (1991). "Interdisciplinary Research on the Aqueduct of Nimes and the Pont du Gard". Journal of Roman Archaeology 4: 63–88.