| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 880 DCCCLXXX |
| Ab urbe condita | 1633 |
| Armenian calendar | 329 ԹՎ ՅԻԹ |
| Assyrian calendar | 5630 |
| Bengali calendar | 287 |
| Berber calendar | 1830 |
| Buddhist calendar | 1424 |
| Burmese calendar | 242 |
| Byzantine calendar | 6388–6389 |
| Chinese calendar |
己亥年 (Earth Pig) 3576 or 3516 — to — 庚子年 (Metal Rat) 3577 or 3517 |
| Coptic calendar | 596–597 |
| Discordian calendar | 2046 |
| Ethiopian calendar | 872–873 |
| Hebrew calendar | 4640–4641 |
| Hindu calendars | |
| - Vikram Samvat | 936–937 |
| - Shaka Samvat | 801–802 |
| - Kali Yuga | 3980–3981 |
| Holocene calendar | 10880 |
| Iranian calendar | 258–259 |
| Islamic calendar | 266–267 |
| Japanese calendar |
Gangyō 4 (元慶4年) |
| Javanese calendar | 778–779 |
| Julian calendar | 880 DCCCLXXX |
| Korean calendar | 3213 |
| Minguo calendar | 1032 before ROC 民前1032年 |
| Nanakshahi calendar | −588 |
| Seleucid era | 1191/1192 AG |
| Thai solar calendar | 1422–1423 |
Year 880 (DCCCLXXX) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar.