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| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1221 by topic |
|---|
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Art and literature |
| 1221 in poetry |
| Gregorian calendar | 1221 MCCXXI |
| Ab urbe condita | 1974 |
| Armenian calendar | 670 ԹՎ ՈՀ |
| Assyrian calendar | 5971 |
| Balinese saka calendar | 1142–1143 |
| Bengali calendar | 628 |
| Berber calendar | 2171 |
| English Regnal year | 5 Hen. 3 – 6 Hen. 3 |
| Buddhist calendar | 1765 |
| Burmese calendar | 583 |
| Byzantine calendar | 6729–6730 |
| Chinese calendar | 庚辰年 (Metal Dragon) 3918 or 3711 — to — 辛巳年 (Metal Snake) 3919 or 3712 |
| Coptic calendar | 937–938 |
| Discordian calendar | 2387 |
| Ethiopian calendar | 1213–1214 |
| Hebrew calendar | 4981–4982 |
| Hindu calendars | |
| - Vikram Samvat | 1277–1278 |
| - Shaka Samvat | 1142–1143 |
| - Kali Yuga | 4321–4322 |
| Holocene calendar | 11221 |
| Igbo calendar | 221–222 |
| Iranian calendar | 599–600 |
| Islamic calendar | 617–618 |
| Japanese calendar | Jōkyū 3 (承久３年) |
| Javanese calendar | 1129–1130 |
| Julian calendar | 1221 MCCXXI |
| Korean calendar | 3554 |
| Minguo calendar | 691 before ROC 民前691年 |
| Nanakshahi calendar | −247 |
| Thai solar calendar | 1763–1764 |
| Tibetan calendar | 阳金龙年 (male Iron-Dragon) 1347 or 966 or 194 — to — 阴金蛇年 (female Iron-Snake) 1348 or 967 or 195 |
Year 1221 (MCCXXI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.