1 BC

Year 1 BC was a common year starting on Friday or Saturday (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 Thursday of the Proleptic Julian calendar. It is also a leap year starting on Saturday, in the Proleptic Gregorian calendar. At the time, it was known as the Year of the Consulship of Lentulus and Piso (or, less frequently, year 753 Ab urbe condita). The denomination 1 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. The following year is 1 AD in the widely used Julian calendar, which does not have a "year zero".

Millennium:	1st millennium BC
Centuries:	2nd century BC 1st century BC 1st century
Decades:	20s BC 10s BC 0s BC 0s 10s
Years:	4 BC 3 BC 2 BC 1 BC AD 1 AD 2 AD 3

1 BC in various calendars

Gregorian calendar	1 BC N
Ab urbe condita	753
Ancient Greek era	194th Olympiad, year 4
Assyrian calendar	4750
Balinese saka calendar	N/A
Bengali calendar	−593
Berber calendar	950
Buddhist calendar	544
Burmese calendar	−638
Byzantine calendar	5508–5509
Chinese calendar	己未年 (Earth Goat) 2696 or 2636     — to — 庚申年 (Metal Monkey) 2697 or 2637
Coptic calendar	−284 – −283
Discordian calendar	1166
Ethiopian calendar	−8 – −7
Hebrew calendar	3760–3761
Hindu calendars
- Vikram Samvat	56–57
- Shaka Samvat	N/A
- Kali Yuga	3100–3101
Holocene calendar	10000
Iranian calendar	622 BP – 621 BP
Islamic calendar	641 BH – 640 BH
Javanese calendar	N/A
Julian calendar	1 BC N
Korean calendar	2333
Minguo calendar	1912 before ROC 民前1912年
Nanakshahi calendar	−1468
Seleucid era	311/312 AG
Thai solar calendar	542–543
Tibetan calendar	阴土羊年 (female Earth-Goat) 126 or −255 or −1027     — to — 阳金猴年 (male Iron-Monkey) 127 or −254 or −1026

Events

By place

China

• Emperor Ai of Han dies and is succeeded by his 8-year-old cousin Ping of Han. Wang Mang is appointed regent by Grand Empress Dowager Wang Zhengjun, who is also his aunt.
• Former regent Dong Xian, who was previously Emperor Ai of Han's lover, commits suicide with his wife.

By topic

Religion

• Estimated birth of Jesus, in the Christian religion, as assigned by Dionysius Exiguus in his Anno Domini era; according to most scholars, Dionysius used the word "incarnation", but it is not known whether he meant conception or birth.[1][2] However, at least one scholar thinks Dionysius placed the incarnation of Jesus in the next year, AD 1.[1][2] Most modern scholars do not consider Dionysius' calculations authoritative, themselves placing the event several years earlier (see Chronology of Jesus).[3]

Deaths

• August 15 – Ai of Han, Chinese emperor of the Han Dynasty (b. 27 BC)
• Dong Xian, Chinese politician and commander-in-chief (b. 23 BC)
• Xiaoai, Chinese empress and wife of Ai of Han
• Zhao Feiyan, Chinese empress and wife of Cheng of Han (b. 45 BC)

See also

• Year zero for the different conventions that historians and astronomers use for "BC" years

References

1. Georges Declercq, Anno Domini: The origins of the Christian Era (Turnhout, Belgium: Brepols, 2000), pp.143–147.
2. G. Declercq, "Dionysius Exiguus and the introduction of the Christian Era", Sacris Erudiri 41 (2002) 165–246, pp.242–246. Annotated version of a portion of Anno Domini.
3. James D. G. Dunn, Jesus Remembered, Eerdmans Publishing (2003), page 324.