AD 1

AD 1 (I), 1 AD or 1 CE is the epoch year for the Anno Domini calendar era. It was the first year of the Common Era (CE), of the 1st millennium and of the 1st century. 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.

Millennium: 1st millennium
AD 1 in various calendars
Gregorian calendarAD 1
Ab urbe condita754
Assyrian calendar4751
Balinese saka calendarN/A
Bengali calendar−592
Berber calendar951
Buddhist calendar545
Burmese calendar−637
Byzantine calendar5509–5510
Chinese calendar庚申(Metal Monkey)
2697 or 2637
    — to —
辛酉年 (Metal Rooster)
2698 or 2638
Coptic calendar−283 – −282
Discordian calendar1167
Ethiopian calendar−7 – −6
Hebrew calendar3761–3762
Hindu calendars
 - Vikram Samvat57–58
 - Shaka SamvatN/A
 - Kali Yuga3101–3102
Holocene calendar10001
Iranian calendar621 BP – 620 BP
Islamic calendar640 BH – 639 BH
Javanese calendarN/A
Julian calendarAD 1
Korean calendar2334
Minguo calendar1911 before ROC
Nanakshahi calendar−1467
Seleucid era312/313 AG
Thai solar calendar543–544
Tibetan calendar阳金猴年
(male Iron-Monkey)
127 or −254 or −1026
    — to —
(female Iron-Rooster)
128 or −253 or −1025
World in 1 CE
The world in AD 1
East-Hem 001ad
The eastern hemisphere in AD 1
Germanic tribes (750BC-1AD)
Germanic tribes in Europe in AD 1


By place

Roman Empire




  • 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

Arts and sciences


  • 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]



  1. ^ a b Declercq 2000.
  2. ^ a b Declercq 2002.
  3. ^ Dunn 2003.


  • 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.


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

The 0s covers the first nine years of the Anno Domini era, which began on January 1st, AD 1 and ended on December 31st, AD 9.

1st century

The 1st century was the century AD 1 to AD 100 according to the Julian calendar. It is often written as the 1st century AD or 1st century CE to distinguish it from the 1st century BC (or BCE) which preceded it. The 1st century is considered part of the Classical era, epoch, or historical period.

During this period, Europe, North Africa and the Near East fell under increasing domination by the Roman Empire, which continued expanding, most notably conquering Britain under the emperor Claudius (AD 43). The reforms introduced by Augustus during his long reign stabilized the empire after the turmoil of the previous century's civil wars. Later in the century the Julio-Claudian dynasty, which had been founded by Augustus, came to an end with the suicide of Nero in AD 68. There followed the famous Year of Four Emperors, a brief period of civil war and instability, which was finally brought to an end by Vespasian, ninth Roman emperor, and founder of the Flavian dynasty. The Roman Empire generally experienced a period of prosperity and dominance in this period and the First Century is remembered as part of the Empire's golden age.

The 1st century saw the appearance of Christianity.

China continued to be dominated by the Han Dynasty, despite a fourteen-year interruption by the Xin dynasty under Wang Mang. Han rule was restored in AD 23; Wang Mang's rule represents the watershed between the Western/Former Han and the Eastern/Later Han. The capital was also moved from Chang'an to Luoyang.

1st millennium

The first millennium was a period of time spanning the years AD 1 to AD 1000 (1st to 10th centuries; in astronomy: JD 1721425.5 – 2086667.5).

World population rose more slowly than during the preceding millennium, from about 200 million in AD 1 to about 300 million in AD 1000.In Western Eurasia (Europe and Near East), the first millennium was a time of great transition from Classical Antiquity to the Middle Ages. The 1st century saw the peak of the Roman Empire, followed by its gradual decline during the period of Late Antiquity, the rise of Christianity and the Great Migrations. The second half of the millennium is characterized as the Early Middle Ages in Europe, and marked by the Viking expansion in the west, the rise of the Byzantine Empire in the east.

Islam expands rapidly from Arabia to western Asia, India, North Africa and the Iberian peninsula, culminating in the Islamic Golden Age (700–1200 AD).

In East Asia, the first millennium was also a time of great cultural advances, notably the spread of Buddhism to East Asia. In China, the Han dynasty is replaced by the Jin dynasty and later the Tang dynasty until the 10th century sees renewed fragmentation in the Five Dynasties and Ten Kingdoms period. In Japan, a sharp increase in population followed when farmers' use of iron tools increased their productivity and crop yields. The Yamato court was established.

In South Asia, the Indian subcontinent was divided among numerous kingdoms throughout the first millennium, until the formation of the Gupta Empire.

In Mesoamerica, the first millennium was a period of enormous growth known as the Classic Era (200–900 AD). Teotihuacan grew into a metropolis and its empire dominated Mesoamerica. In South America, pre-Incan, coastal cultures flourished, producing impressive metalwork and some of the finest pottery seen in the ancient world.

In North America, the Mississippian culture rose at the end of the millennium in the Mississippi and Ohio river valleys. Numerous cities were built; Cahokia, the largest, was based in present-day Illinois. The construction of Monks Mound at Cahokia was begun in 900–950 AD.

In Sub-Saharan Africa, the Bantu expansion reaches Southern Africa by about the 5th century.

The Arab slave trade spans the Sahara and the Swahili coast by the 9th century.

Ab urbe condita

Ab urbe condita (Latin pronunciation: [ab ˈʊrbɛ ˈkɔndɪtaː]), or Anno urbis conditæ (Latin pronunciation: [ˈannoː ˈʊrbɪs ˈkɔndɪtae̯]), often abbreviated as AUC in either case, is a convention that was used in antiquity and by classical historians to refer to a given year in Ancient Rome. Ab urbe condita literally means "from the founding of the City," while anno urbis conditæ means "in the year since the City's founding." Therefore, the traditional year of the foundation of Rome, 753 BC, would be written AUC 1, while AD 1 would be AUC 754. The foundation of the Empire in 27 BC would be AUC 727.

Usage of the term was more common during the Renaissance, when editors sometimes added AUC to Roman manuscripts they published, giving the false impression that the convention was commonly used in antiquity. In reality, the dominant method of identifying years in Roman times was to name the two consuls who held office that year. In late antiquity, regnal years were also in use, as was the Diocletian era in Roman Egypt after AD 293, and in the Byzantine Empire after AD 537, following a decree by Justinian.

Anno Domini

The terms anno Domini (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term anno Domini is Medieval Latin and means "in the year of the Lord", but is often presented using "our Lord" instead of "the Lord", taken from the full original phrase "anno Domini nostri Jesu Christi", which translates to "in the year of our Lord Jesus Christ".

This calendar era is based on the traditionally reckoned year of the conception or birth of Jesus of Nazareth, with AD counting years from the start of this epoch, and BC denoting years before the start of the era. There is no year zero in this scheme, so the year AD 1 immediately follows the year 1 BC. This dating system was devised in 525 by Dionysius Exiguus of Scythia Minor, but was not widely used until after 800.The Gregorian calendar is the most widely used calendar in the world today. For decades, it has been the unofficial global standard, adopted in the pragmatic interests of international communication, transportation, and commercial integration, and recognized by international institutions such as the United Nations.Traditionally, English followed Latin usage by placing the "AD" abbreviation before the year number. However, BC is placed after the year number (for example: AD 2019, but 68 BC), which also preserves syntactic order. The abbreviation is also widely used after the number of a century or millennium, as in "fourth century AD" or "second millennium AD" (although conservative usage formerly rejected such expressions). Because BC is the English abbreviation for Before Christ, it is sometimes incorrectly concluded that AD means After Death, i.e., after the death of Jesus. However, this would mean that the approximate 33 years commonly associated with the life of Jesus would neither be included in the BC nor the AD time scales.Terminology that is viewed by some as being more neutral and inclusive of non-Christian people is to call this the Current or Common Era (abbreviated as CE), with the preceding years referred to as Before the Common or Current Era (BCE). Astronomical year numbering and ISO 8601 avoid words or abbreviations related to Christianity, but use the same numbers for AD years.


A decade is a period of 10 years. The word is derived (via French and Latin) from the Ancient Greek: δεκάς, translit. dekas), which means a group of ten. Other words for spans of years also come from Latin: biennium (2 years), triennium (3 years), quadrennium (4 years), lustrum (5 years), century (100 years), millennium (1000 years).

Douglas A-1 Skyraider

The Douglas A-1 Skyraider (formerly AD Skyraider) is an American single-seat attack aircraft that saw service between the late 1940s and early 1980s. The Skyraider had a remarkably long and successful career; it became a piston-powered, propeller-driven anachronism in the jet age, and was nicknamed "Spad", after the French World War I fighter.It was operated by the United States Navy (USN), the United States Marine Corps (USMC), and the United States Air Force (USAF), and also saw service with the British Royal Navy, the French Air Force, the Republic of Vietnam Air Force (VNAF), and others. It remained in U.S. service until the early 1970s.

East Germanic languages

The East Germanic languages, also called the Oder–Vistula Germanic languages, are a group of extinct Germanic languages family spoken by East Germanic peoples.

The only East Germanic languages of which texts are known are Gothic and its descendant, Crimean Gothic. Other languages that are assumed to be East Germanic include Vandalic and Burgundian, though very few texts in these languages are known. Crimean Gothic, the last remaining East Germanic language, is believed to have survived until the 18th century in isolated areas of Crimea.

Fremont culture

The Fremont culture or Fremont people is a pre-Columbian archaeological culture which received its name from the Fremont River in the U.S. state of Utah, where the culture's sites were discovered by local indigenous peoples like the Navajo and Ute. In Navajo culture, the pictographs are credited to people who lived before the flood. The Fremont River itself is named for John Charles Frémont, an American explorer. It inhabited sites in what is now Utah and parts of Nevada, Idaho and Colorado from AD 1 to 1301 (2,000-700 years ago). It was adjacent to, roughly contemporaneous with, but distinctly different from the Ancestral Pueblo peoples located to their south.

Hohokam Stadium

Hohokam Stadium, also known as Dwight W. Patterson Field and formerly Hohokam Park (1997–2013), is a 10,500-seat baseball park located in Mesa, Arizona. The stadium, named for the Hohokam people who occupied the region from approximately AD 1 to the mid-15th century, was completed in January 1997 after the original Hohokam Stadium was demolished. In 2015, it became the spring training home of Major League Baseball's Oakland Athletics. The 2015 stadium and facility refresh was led by Populous.

Hohokam Stadium has the largest scoreboard in the Cactus League, measuring 12 by 16 feet (3.7 by 4.9 m).

Holocene calendar

The Holocene calendar, also known as the Holocene Era or Human Era (HE), is a year numbering system that adds exactly 10,000 years to the currently dominant (AD/BC or CE/BCE) numbering scheme, placing its first year near the beginning of the Holocene geological epoch and the Neolithic Revolution, when humans transitioned from a hunter-gatherer lifestyle to agriculture and fixed settlements. The year 2019 in the Holocene calendar is 12,019 HE. The HE scheme was first proposed by Cesare Emiliani in 1993.

List of political entities in the 1st century

Political entities in the 1st century BC – Political entities in the 2nd century – Political entities by yearThis is a list of political entities that existed between 1 AD and 100 AD.

List of states by population in 1 CE

This is a list of empires by population in 1 CE. Estimates are for the beginning of the year.

Lucius Junius Gallio Annaeanus

Lucius Junius Gallio Annaeanus or Gallio was a Roman senator and brother of the famous writer Seneca. He is best known for his impartial judgment of a legal case involving Paul the Apostle in Corinth.

Mancos State Park

Mancos State Park is a Colorado state park. It is located near Mesa Verde National Park, the West Mancos Trailhead and the San Juan Skyway. The park is known to have been a dwelling place for Ancestral Puebloans. They lived in the Four Corners area in ancient times from AD 1 to 1300. It was also later controlled by the Spanish for 200 years from the 17th to the 19th century.

In 1948 the U.S. Bureau of Reclamation commissioned the Jackson Gulch Dam, and it was officially included as a part of the Colorado state parks in 1987.


The NASA AD-1 was both an aircraft and an associated flight test program conducted between 1979 and 1982 at the NASA Dryden Flight Research Center, Edwards California, which successfully demonstrated an aircraft wing that could be pivoted obliquely from zero to 60 degrees during flight.

The unique oblique wing was demonstrated on a small, subsonic jet-powered research aircraft called the AD-1 (Ames-Dryden-1). The aircraft was flown 79 times during the research program, which evaluated the basic pivot-wing concept and gathered information on handling qualities and aerodynamics at various speeds and degrees of pivot.

One (disambiguation)

One or 1 is the first natural number.

1, one, or ONE may also refer to:

AD 1, first year of the AD era

1 BC, the year before AD 1

One (pronoun), a pronoun in the English language

Hydrogen, with an atomic number of 1

The month of January

Pisces (astrology)

Pisces (♓️) (; Ancient Greek: Ἰχθύες Ikhthyes) is the twelfth astrological sign in the Zodiac. It spans 330° to 360° of celestial longitude. Under the tropical zodiac the sun transits this area between February 19 and March 20. In Sidereal astrology, the Sun currently transits the constellation of Pisces from approximately March 12 to April 18. In classical interpretations, the symbol of the fish is derived from the ichthyocentaurs, who aided Aphrodite when she was born from the sea.According to some tropical astrologers, the current astrological age is the Age of Pisces, while others maintain that it is the Age of Aquarius.

Year zero

Year zero does not exist in the anno Domini system usually used to number years in the Gregorian calendar and in its predecessor, the Julian calendar. In this system, the year 1 BC is followed by AD 1. However, there is a year zero in astronomical year numbering (where it coincides with the Julian year 1 BC) and in ISO 8601:2004 (where it coincides with the Gregorian year 1 BC) as well as in all Buddhist and Hindu calendars.

This page is based on a Wikipedia article written by authors (here).
Text is available under the CC BY-SA 3.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.