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Title: 20  
Author: World Heritage Encyclopedia
Language: English
Subject: 12, 17, 11, 15, 10
Publisher: World Heritage Encyclopedia


Millennium: 1st millennium
Centuries: 1st century BC1st century2nd century
Decades: 0s BC  0s  10s  – 20s –  30s  40s  50s
Years: 17 18 192021 22 23
20 by topic
State leadersSovereign states
Birth and death categories
Establishment and disestablishment categories
20 in other calendars
Gregorian calendar 20
Ab urbe condita 773
Armenian calendar N/A
Assyrian calendar 4770
Bahá'í calendar −1824 – −1823
Bengali calendar −573
Berber calendar 970
English Regnal year N/A
Buddhist calendar 564
Burmese calendar −618
Byzantine calendar 5528–5529
Chinese calendar 己卯(Earth Rabbit)
2716 or 2656
    — to —
庚辰年 (Metal Dragon)
2717 or 2657
Coptic calendar −264 – −263
Discordian calendar 1186
Ethiopian calendar 12–13
Hebrew calendar 3780–3781
Hindu calendars
 - Vikram Samvat 76–77
 - Shaka Samvat N/A
 - Kali Yuga 3121–3122
Holocene calendar 10020
Igbo calendar −980 – −979
Iranian calendar 602 BP – 601 BP
Islamic calendar 621 BH – 619 BH
Japanese calendar N/A
Juche calendar N/A
Julian calendar 20
Korean calendar 2353
Minguo calendar 1892 before ROC
Thai solar calendar 563

Year 20 (XX) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Marcus Valerius Messalla Barbatus and Cotta (or, less frequently, year 773 Ab urbe condita). The denomination 20 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.


By place

Roman Empire


  • First year of Dihuang era of the Chinese Xin Dynasty.

By topic

Arts and sciences



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