1646
| 1646 in altris calendaris | |
| Calendari gregorian | 1646 |
| Ab urbe condita | 2399 |
| Calendari armen | 1095 |
| Calendari cinês | 4342 — 4343 |
| Calendari ebraic | 5405 — 5406 |
| Calendari hindu - Vikram Samvat - Shaka Samvat - Kali Yuga |
1701 — 1702 1568 — 1569 4747 — 4748 |
| Calendari iranian | 1024 — 1025 |
| Calendari islamic | 1066 — 1067 |
| Calendari runic | 1896 |