20 is a year in the 1st century. It was a leap year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Marcus Valerius Messalla Barbatus and Cotta.

Millennium: 1st millennium
Centuries: 1st century BC1st century2nd century
Decades: 0s BC  0s  10s  – 20s –  30s  40s  50s
Years: 17 18 192021 22 23
AD 20 in other calendars
Gregorian calendarAD 20
XX
Ab urbe condita773
Assyrian calendar4770
Balinese saka calendarN/A
Bengali calendar−573
Berber calendar970
Buddhist calendar564
Burmese calendar−618
Byzantine calendar5528–5529
Chinese calendar己卯(Earth Rabbit)
2716 or 2656
    — to —
庚辰年 (Metal Dragon)
2717 or 2657
Coptic calendar−264 – −263
Discordian calendar1186
Ethiopian calendar12–13
Hebrew calendar3780–3781
Hindu calendars
 - Vikram Samvat76–77
 - Shaka SamvatN/A
 - Kali Yuga3120–3121
Holocene calendar10020
Iranian calendar602 BP – 601 BP
Islamic calendar621 BH – 619 BH
Javanese calendarN/A
Julian calendarAD 20
XX
Korean calendar2353
Minguo calendar1892 before ROC
民前1892年
Nanakshahi calendar−1448
Seleucid era331/332 AG
Thai solar calendar562–563
Tibetan calendar阴土兔年
(female Earth-Rabbit)
146 or −235 or −1007
    — to —
阳金龙年
(male Iron-Dragon)
147 or −234 or −1006

Events

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Deaths

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