| Millennium: | 1st millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| Gregorian calendar | 828 DCCCXXVIII |
| Ab urbe condita | 1581 |
| Armenian calendar | 277 ԹՎ ՄՀԷ |
| Assyrian calendar | 5578 |
| Balinese saka calendar | 749–750 |
| Bengali calendar | 235 |
| Berber calendar | 1778 |
| Buddhist calendar | 1372 |
| Burmese calendar | 190 |
| Byzantine calendar | 6336–6337 |
| Chinese calendar |
丁未年 (Fire Goat) 3524 or 3464 — to — 戊申年 (Earth Monkey) 3525 or 3465 |
| Coptic calendar | 544–545 |
| Discordian calendar | 1994 |
| Ethiopian calendar | 820–821 |
| Hebrew calendar | 4588–4589 |
| Hindu calendars | |
| - Vikram Samvat | 884–885 |
| - Shaka Samvat | 749–750 |
| - Kali Yuga | 3928–3929 |
| Holocene calendar | 10828 |
| Iranian calendar | 206–207 |
| Islamic calendar | 212–213 |
| Japanese calendar |
Tenchō 5 (天長5年) |
| Javanese calendar | 724–725 |
| Julian calendar | 828 DCCCXXVIII |
| Korean calendar | 3161 |
| Minguo calendar | 1084 before ROC 民前1084年 |
| Nanakshahi calendar | −640 |
| Seleucid era | 1139/1140 AG |
| Thai solar calendar | 1370–1371 |
Year 828 (DCCCXXVIII) was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar.