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| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1040 by topic |
|---|
| Leaders |
| Birth and death categories |
| Births – Deaths |
| Establishments and disestablishments categories |
| Establishments – Disestablishments |
| Gregorian calendar | 1040 MXL |
| Ab urbe condita | 1793 |
| Armenian calendar | 489 ԹՎ ՆՁԹ |
| Assyrian calendar | 5790 |
| Balinese saka calendar | 961–962 |
| Bengali calendar | 447 |
| Berber calendar | 1990 |
| English Regnal year | N/A |
| Buddhist calendar | 1584 |
| Burmese calendar | 402 |
| Byzantine calendar | 6548–6549 |
| Chinese calendar | 己卯年 (Earth Rabbit) 3737 or 3530 — to — 庚辰年 (Metal Dragon) 3738 or 3531 |
| Coptic calendar | 756–757 |
| Discordian calendar | 2206 |
| Ethiopian calendar | 1032–1033 |
| Hebrew calendar | 4800–4801 |
| Hindu calendars | |
| - Vikram Samvat | 1096–1097 |
| - Shaka Samvat | 961–962 |
| - Kali Yuga | 4140–4141 |
| Holocene calendar | 11040 |
| Igbo calendar | 40–41 |
| Iranian calendar | 418–419 |
| Islamic calendar | 431–432 |
| Japanese calendar | Chōryaku 4 / Chōkyū 1 (長久元年) |
| Javanese calendar | 943–944 |
| Julian calendar | 1040 MXL |
| Korean calendar | 3373 |
| Minguo calendar | 872 before ROC 民前872年 |
| Nanakshahi calendar | −428 |
| Seleucid era | 1351/1352 AG |
| Thai solar calendar | 1582–1583 |
| Tibetan calendar | 阴土兔年 (female Earth-Rabbit) 1166 or 785 or 13 — to — 阳金龙年 (male Iron-Dragon) 1167 or 786 or 14 |
Year 1040 (MXL) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar.