| Millennium: | 1st millennium |
|---|---|
| Centuries: | 6th century – 7th century – 8th century |
| Decades: | 590s 600s 610s – 620s – 630s 640s 650s |
| Years: | 617 618 619 – 620 – 621 622 623 |
| 620 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 620 DCXX |
| Ab urbe condita | 1373 |
| Armenian calendar | 69 ԹՎ ԿԹ |
| Bahá'í calendar | -1224 – -1223 |
| Bengali calendar | 27 |
| Berber calendar | 1570 |
| Buddhist calendar | 1164 |
| Burmese calendar | -18 |
| Byzantine calendar | 6128 – 6129 |
| Chinese calendar | 己卯年十一月廿一日 (3256/3316-11-21) — to —
庚辰年十二月初三日(3257/3317-12-3) |
| Coptic calendar | 336 – 337 |
| Ethiopian calendar | 612 – 613 |
| Hebrew calendar | 4380 – 4381 |
| Hindu calendars | |
| - Bikram Samwat | 676 – 677 |
| - Shaka Samvat | 542 – 543 |
| - Kali Yuga | 3721 – 3722 |
| Holocene calendar | 10620 |
| Iranian calendar | 2 BP – 1 BP |
| Islamic calendar | 2 BH – 1 BH |
| Japanese calendar | |
| Korean calendar | 2953 |
| Thai solar calendar | 1163 |