| 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 – 1 AD – 2 AD 3 AD 4 AD |
| 1 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 1 I |
| Ab urbe condita | 754 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1843 – -1842 |
| Bengali calendar | -592 |
| Berber calendar | 951 |
| Buddhist calendar | 545 |
| Burmese calendar | -637 |
| Byzantine calendar | 5509 – 5510 |
| Chinese calendar | 庚申年 (2637/2697) — to —
辛酉年(2638/2698) |
| Coptic calendar | -283 – -282 |
| Ethiopian calendar | -7 – -6 |
| Hebrew calendar | 3761 – 3762 |
| Hindu calendars | |
| - Vikram Samvat | 56 – 57 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3102 – 3103 |
| Holocene calendar | 10001 |
| Iranian calendar | 621 BP – 620 BP |
| Islamic calendar | 640 BH – 639 BH |
| Japanese calendar | |
| Korean calendar | 2334 |
| Thai solar calendar | 544 |
Year 1 (I) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The preceding year is 1 BC in the widely used Gregorian calendar or in its predecessor, the Julian calendar, neither of which has a "year zero".
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