21 BC

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Millennium: 1st millennium BC
Centuries: 2nd century BC1st century BC1st century
Decades: 50s BC  40s BC  30s BC  – 20s BC –  10s BC  0s BC  0s
Years: 24 BC 23 BC 22 BC21 BC20 BC 19 BC 18 BC
21 BC by topic
State leadersSovereign states
Birth and death categories
Establishments and disestablishments categories
21 BC in other calendars
Gregorian calendar 21 BC
Ab urbe condita 733
Armenian calendar N/A
Assyrian calendar 4730
Bahá'í calendar −1864 – −1863
Bengali calendar −613
Berber calendar 930
English Regnal year N/A
Buddhist calendar 524
Burmese calendar −658
Byzantine calendar 5488–5489
Chinese calendar 己亥(Earth Pig)
2676 or 2616
    — to —
庚子年 (Metal Rat)
2677 or 2617
Coptic calendar −304 – −303
Discordian calendar 1146
Ethiopian calendar −28 – −27
Hebrew calendar 3740–3741
Hindu calendars
 - Vikram Samvat 36–37
 - Shaka Samvat N/A
 - Kali Yuga 3081–3082
Holocene calendar 9980
Igbo calendar −1020 – −1019
Iranian calendar 642 BP – 641 BP
Islamic calendar 662 BH – 661 BH
Japanese calendar N/A
Juche calendar N/A
Julian calendar 21 BC
Korean calendar 2313
Minguo calendar 1932 before ROC
Thai solar calendar 523

Year 21 BC was either a common year starting on Monday, Tuesday or Wednesday or a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a leap year starting on Sunday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Lollius and Lepidus (or, less frequently, year 733 Ab urbe condita). The denomination 21 BC 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[edit]

Roman Empire[edit]