Scriptwriter notation for 20 seconds, sometimes used to indicate a 20-second broadcast commercial.
| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century BC – 1st century – 2nd century |
| Decades: | 0s BC 0s 10s – 20s – 30s 40s 50s |
| Years: | 17 18 19 – 20 – 21 22 23 |
| 20 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 20 XX |
| Ab urbe condita | 773 |
| Armenian calendar | N/A |
| Assyrian calendar | 4770 |
| Bahá'í calendar | -1824–-1823 |
| Bengali calendar | -573 |
| Berber calendar | 970 |
| English Regnal year | N/A |
| Buddhist calendar | 564 |
| Burmese calendar | -618 |
| Byzantine calendar | 5528–5529 |
| Chinese calendar | 己卯年十二月十七日 (2656/2716-12-17) — to —
庚辰年十二月廿八日(2657/2717-12-28) |
| Coptic calendar | -264–-263 |
| Ethiopian calendar | 12–13 |
| Hebrew calendar | 3780–3781 |
| Hindu calendars | |
| - Vikram Samvat | 76–77 |
| - Shaka Samvat | N/A |
| - Kali Yuga | 3121–3122 |
| Holocene calendar | 10020 |
| Iranian calendar | 602 BP – 601 BP |
| Islamic calendar | 621 BH – 619 BH |
| Japanese calendar | |
| Korean calendar | 2353 |
| Minguo calendar | 1892 before ROC 民前1892年 |
| Thai solar calendar | 563 |
| Wikimedia Commons has media related to: 20 |
Year 20 (XX) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Messala and Cotta (or, less frequently, year 773 Ab urbe condita). The denomination 20 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.
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