The year 1 AD (I) was a common year starting on Saturday[1] in the Julian calendar. The year started on a Monday[2] in the Gregorian calendar. It was the first year of the 1st century and 1st millennium.

Millennium:
Centuries: – '
Decades:       – –      
Years: – '
AD 1 in other calendars
Gregorian calendarAD 1
I
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
I
Korean calendar2334
Minguo calendar1911 before ROC
民前1911年
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 —
阴金鸡年
(female Iron-Rooster)
128 or −253 or −1025

It is one of only seven years to use just one Roman numeral. The seven are 1 AD (I), 5 AD (V), 10 AD (X), 50 AD (L), 100 AD (C), 500 AD (D), and 1000 AD (M).

At the time, it was known as the Year of the Consulship of Caesar and Paullus. The denomination 1 for this year has been used since the early medieval period, when the Anno Domini calendar era became the main method in Europe for naming years. The year before this is 1 BC in the widely used Julian calendar.

Events

change

By place

change

Roman Empire

change
 
A bust of Tiberius.
 
The World in year one.

Africa

change

Americas

change

By topic

change

Arts and sciences

change

Religion

change

Births

change

Deaths

change

References

change
  1. "CalendarHome.com - 1". calendarhome.com. 2011. Retrieved August 3, 2011.
  2. "year 1 - Wolfram|Alpha". wolframalpha.com. 2011. Retrieved August 4, 2011.
  3. The silkroad foundation's silk road chronology Archived 2008-10-14 at the Wayback Machine
  4. 4.0 4.1 Georges Declercq, Anno Domini: The origins of the Christian Era (Turnhout, Belgium: Brepols, 2000), pp.143–147.
  5. 5.0 5.1 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.