| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1420 by topic |
|---|
| Arts and science |
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Art and literature |
| 1420 in poetry |
| Gregorian calendar | 1420 MCDXX |
| Ab urbe condita | 2173 |
| Armenian calendar | 869 ԹՎ ՊԿԹ |
| Assyrian calendar | 6170 |
| Balinese saka calendar | 1341–1342 |
| Bengali calendar | 827 |
| Berber calendar | 2370 |
| English Regnal year | 7 Hen. 5 – 8 Hen. 5 |
| Buddhist calendar | 1964 |
| Burmese calendar | 782 |
| Byzantine calendar | 6928–6929 |
| Chinese calendar | 己亥年 (Earth Pig) 4117 or 3910 — to — 庚子年 (Metal Rat) 4118 or 3911 |
| Coptic calendar | 1136–1137 |
| Discordian calendar | 2586 |
| Ethiopian calendar | 1412–1413 |
| Hebrew calendar | 5180–5181 |
| Hindu calendars | |
| - Vikram Samvat | 1476–1477 |
| - Shaka Samvat | 1341–1342 |
| - Kali Yuga | 4520–4521 |
| Holocene calendar | 11420 |
| Igbo calendar | 420–421 |
| Iranian calendar | 798–799 |
| Islamic calendar | 822–823 |
| Japanese calendar | Ōei 27 (応永２７年) |
| Javanese calendar | 1334–1335 |
| Julian calendar | 1420 MCDXX |
| Korean calendar | 3753 |
| Minguo calendar | 492 before ROC 民前492年 |
| Nanakshahi calendar | −48 |
| Thai solar calendar | 1962–1963 |
| Tibetan calendar | 阴土猪年 (female Earth-Pig) 1546 or 1165 or 393 — to — 阳金鼠年 (male Iron-Rat) 1547 or 1166 or 394 |
Year 1420 (MCDXX) was a leap year starting on Monday (link will display the full calendar) of the Julian calendar.