641
| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 641 DCXLI |
| Ab urbe condita | 1394 |
| Armenian calendar | 90 ԹՎ Ղ |
| Assyrian calendar | 5391 |
| Bengali calendar | 48 |
| Berber calendar | 1591 |
| Buddhist calendar | 1185 |
| Burmese calendar | 3 |
| Byzantine calendar | 6149–6150 |
| Chinese calendar |
庚子年 (Metal Rat) 3337 or 3277 — to — 辛丑年 (Metal Ox) 3338 or 3278 |
| Coptic calendar | 357–358 |
| Discordian calendar | 1807 |
| Ethiopian calendar | 633–634 |
| Hebrew calendar | 4401–4402 |
| Hindu calendars | |
| - Vikram Samvat | 697–698 |
| - Shaka Samvat | 562–563 |
| - Kali Yuga | 3741–3742 |
| Holocene calendar | 10641 |
| Iranian calendar | 19–20 |
| Islamic calendar | 20–21 |
| Japanese calendar | N/A |
| Javanese calendar | 531–532 |
| Julian calendar | 641 DCXLI |
| Korean calendar | 2974 |
| Minguo calendar | 1271 before ROC 民前1271年 |
| Nanakshahi calendar | −827 |
| Seleucid era | 952/953 AG |
| Thai solar calendar | 1183–1184 |
Year 641 (DCXLI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 641 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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