AD 1

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Millennium: 1st millennium
AD 1 in various calendars
Gregorian calendar AD 1
Ab urbe condita 754
Assyrian calendar 4751
Balinese saka calendar N/A
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 3101–3102
Holocene calendar 10001
Iranian calendar 621 BP – 620 BP
Islamic calendar 640 BH – 639 BH
Javanese calendar N/A
Julian calendar AD 1
Korean calendar 2334
Minguo calendar 1911 before ROC
Nanakshahi calendar −1467
Seleucid era 312/313 AG
Thai solar calendar 543–544
Tibetan calendar 阳金猴年
(male Iron-Monkey)
127 or −254 or −1026
    — to —
(female Iron-Rooster)
128 or −253 or −1025
The world in AD 1
The eastern hemisphere in AD 1
Germanic tribes in Europe in AD 1

AD 1 (I), 1 AD or 1 CE is the epoch year for the Anno Domini calendar era. It was a common year starting on Saturday or Sunday,[note 1] a common year starting on Saturday by the proleptic Julian calendar, and a common year starting on Monday by the proleptic Gregorian calendar. In its time, year 1 was known as the Year of the Consulship of Caesar and Paullus, named after Roman consuls Gaius Caesar and Lucius Aemilius Paullus, and less frequently, as year 754 AUC (ab urbe condita) within the Roman Empire. The denomination "AD 1" for this year has been in consistent use since the mid-medieval period when the anno Domini (AD) calendar era became the prevalent method in Europe for naming years. It was the beginning of the Christian/Common era. The preceding year is 1 BC; there is no year 0 in this numbering scheme. The Anno Domini dating system was devised in AD 525 by Dionysius Exiguus.

The Julian calendar, a 45 BC reform of the Roman calendar, was the calendar used by Rome in AD 1.


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. ISSN 0771-7776. doi:10.1484/J.SE.2.300491. 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. 


  1. ^ Sources disagree regarding the starting day of Julian year AD 1, (see leap year error for further information).