| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 20s BC 10s BC 0s BC – 0s – 10s 20s 30s |
| Years: | 3 BC 2 BC 1 BC – AD 1 – AD 2 AD 3 AD 4 |
| Gregorian calendar | AD 1 I |
| 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 | 庚申年 (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 I |
| Korean calendar | 2334 |
| Minguo calendar | 1911 before ROC 民前1911年 |
| 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 — 阴金鸡年 (female Iron-Rooster) 128 or −253 or −1025 |
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.
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.
- ↑ "CalendarHome.com - 1". calendarhome.com. 2011. Retrieved August 3, 2011.
- ↑ "year 1 - Wolfram|Alpha". wolframalpha.com. 2011. Retrieved August 4, 2011.