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"AD 1" redirects here. For other uses, see AD 1 (disambiguation).
This article is about the year 1. For the number, see 1 (number). For other uses, see 1 (disambiguation).
Millennium: 1st millennium
Centuries: 1st century BC1st century2nd century
Decades: 20s BC  10s BC  0s BC  – 0s –  10s  20s  30s
1 by topic
State leadersSovereign states
Birth and death categories
Establishment and disestablishment categories
1 in other calendars
Gregorian calendar 1
Ab urbe condita 754
Assyrian calendar 4751
Bengali calendar −592
Berber calendar 951
Buddhist calendar 545
Burmese calendar −637
Byzantine calendar 5509–5510
Chinese calendar 庚申(Metal Monkey)
2697 or 2637
    — to —
辛酉年 (Metal Rooster)
2698 or 2638
Coptic calendar −283 – −282
Discordian calendar 1167
Ethiopian calendar −7 – −6
Hebrew calendar 3761–3762
Hindu calendars
 - Vikram Samvat 57–58
 - Shaka Samvat N/A
 - Kali Yuga 3102–3103
Holocene calendar 10001
Iranian calendar 621 BP – 620 BP
Islamic calendar 640 BH – 639 BH
Javanese calendar N/A
Julian calendar 1
Korean calendar 2334
Minguo calendar 1911 before ROC
Nanakshahi calendar −1467
Seleucid era 312/313 AG
Thai solar calendar 543–544
The world in 1 AD
The eastern hemisphere in 1 AD
Germanic tribes in Europe in 1 AD

Year 1 (I) was a common year starting on Saturday or Sunday (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 Saturday of the proleptic Julian calendar. It is a common year starting on Monday, in the proleptic Gregorian calendar system. At the time, it was known as the Year of the Consulship of Caesar and Paullus (or, less frequently, year 754 Ab urbe condita). The denomination 1 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. It was the first year of the Christian/Common era. The preceding year is 1 BC in the widely used Julian calendar, which does not have a "year zero". The Julian calendar also is probably the first calendar that was used frequently.


By place[edit]

Roman Empire[edit]




  • Moxos ceases to be a significant religious area in South America (approximate date).
  • The Teotihuacan culture in Mesoamerica begins (approximate date).
  • The Olmec 2 phase of the Olmec civilization begins; San Lorenzo and La Venta grow in population.

By topic[edit]

Arts and sciences[edit]


  • Birth of Jesus, as assigned by Dionysius Exiguus in his anno Domini era according to at least one scholar.[1][2] However, most scholars think Dionysius placed the birth of Jesus in the previous year, 1 BC.[1][2] Furthermore, most modern scholars do not consider Dionysius' calculations authoritative, placing the event several years earlier (see Chronology of Jesus).[3]





  • Declercq, Georges (2000). Anno Domini: The origins of the Christian Era. Turnhout, Belgium: Brepols. pp. 143–147. ISBN 978-2503510507. 
  • Declercq, Georges (2002). "Dionysius Exiguus and the introduction of the Christian Era". Sacris Erudiri. Brussels: Brepols. 41: 165–246. doi:10.1484/J.SE.2.300491. ISSN 0771-7776. Annotated version of a portion of Anno Domini 
  • Dunn, James D. G. (2003). Jesus Remembered. Christianity in the Making. 1. Eerdmans Publishing. p. 324. ISBN 978-0802839312.