691
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 691 DCXCI |
| Ab urbe condita | 1444 |
| Armenian calendar | 140 ԹՎ ՃԽ |
| Assyrian calendar | 5441 |
| Bengali calendar | 98 |
| Berber calendar | 1641 |
| Buddhist calendar | 1235 |
| Burmese calendar | 53 |
| Byzantine calendar | 6199–6200 |
| Chinese calendar |
庚寅年 (Metal Tiger) 3387 or 3327 — to — 辛卯年 (Metal Rabbit) 3388 or 3328 |
| Coptic calendar | 407–408 |
| Discordian calendar | 1857 |
| Ethiopian calendar | 683–684 |
| Hebrew calendar | 4451–4452 |
| Hindu calendars | |
| - Vikram Samvat | 747–748 |
| - Shaka Samvat | 612–613 |
| - Kali Yuga | 3791–3792 |
| Holocene calendar | 10691 |
| Iranian calendar | 69–70 |
| Islamic calendar | 71–72 |
| Japanese calendar | N/A |
| Javanese calendar | 583–584 |
| Julian calendar | 691 DCXCI |
| Korean calendar | 3024 |
| Minguo calendar | 1221 before ROC 民前1221年 |
| Nanakshahi calendar | −777 |
| Seleucid era | 1002/1003 AG |
| Thai solar calendar | 1233–1234 |
Year 691 (DCXCI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 691 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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