18 BC

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Millennium: 1st millennium BC
Centuries: 2nd century BC1st century BC1st century
Decades: 40s BC  30s BC  20s BC  – 10s BC –  0s BC  0s  10s
Years: 21 BC 20 BC 19 BC18 BC17 BC 16 BC 15 BC
18 BC by topic
State leadersSovereign states
Birth and death categories
Establishments and disestablishments categories
18 BC in other calendars
Gregorian calendar 18 BC
Ab urbe condita 736
Armenian calendar N/A
Assyrian calendar 4733
Bahá'í calendar −1861 – −1860
Bengali calendar −610
Berber calendar 933
English Regnal year N/A
Buddhist calendar 527
Burmese calendar −655
Byzantine calendar 5491–5492
Chinese calendar 壬寅(Water Tiger)
2679 or 2619
    — to —
癸卯年 (Water Rabbit)
2680 or 2620
Coptic calendar −301 – −300
Discordian calendar 1149
Ethiopian calendar −25 – −24
Hebrew calendar 3743–3744
Hindu calendars
 - Vikram Samvat 39–40
 - Shaka Samvat N/A
 - Kali Yuga 3084–3085
Holocene calendar 9983
Igbo calendar −1017 – −1016
Iranian calendar 639 BP – 638 BP
Islamic calendar 659 BH – 658 BH
Japanese calendar N/A
Juche calendar N/A
Julian calendar 18 BC
Korean calendar 2316
Minguo calendar 1929 before ROC
Thai solar calendar 526

Year 18 BC was either a common year starting on Friday, Saturday or Sunday or a leap year starting on Saturday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Thursday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Lentulus and Lentulus (or, less frequently, year 736 Ab urbe condita). The denomination 18 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]


  • Onjo becomes the first ruler of the Korean kingdom of Baekje (traditional date).