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Year 815 (DCCCXV) was a common year starting on Monday of the Julian calendar, the 815th year of the Common Era (CE) and Anno Domini (AD) designations, the 815th year of the 1st millennium, the 15th year of the 9th century, and the 6th year of the 810s decade.
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byzantine approximate date dcccxv julian calendar era emperor muslim empire constantinople 896 armenian chinese 810s leo ruler king july 13
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| 815 | - Kali Yuga | 3915–3916 | 1.00 | infobox |
| 815 | - Shaka Samvat | 736–737 | 1.00 | infobox |
| 815 | - Vikram Samvat | 871–872 | 1.00 | infobox |
| 815 | Ab urbe condita | 1568 | 1.00 | infobox |
| 815 | Armenian calendar | 264 ԹՎ ՄԿԴ | 1.00 | infobox |
| 815 | Assyrian calendar | 5565 | 1.00 | infobox |
| 815 | Balinese saka calendar | 736–737 | 1.00 | infobox |
| 815 | Bengali calendar | 221–222 | 1.00 | infobox |
| 815 | Berber calendar | 1765 | 1.00 | infobox |
| 815 | Buddhist calendar | 1359 | 1.00 | infobox |
| 815 | Burmese calendar | 177 | 1.00 | infobox |
| 815 | Byzantine calendar | 6323–6324 | 1.00 | infobox |
| 815 | Chinese calendar | 甲午年 (Wood Horse) 3512 or 3305 — to — 乙未年 (Wood Goat) 3513 or 3306 | 1.00 | infobox |
| 815 | Coptic calendar | 531–532 | 1.00 | infobox |
| 815 | Discordian calendar | 1981 | 1.00 | infobox |
| 815 | Ethiopian calendar | 807–808 | 1.00 | infobox |
| 815 | Gregorian calendar | 815 DCCCXV | 1.00 | infobox |
| 815 | Hebrew calendar | 4575–4576 | 1.00 | infobox |
| 815 | Holocene calendar | 10815 | 1.00 | infobox |
| 815 | Iranian calendar | 193–194 | 1.00 | infobox |
| 815 | Islamic calendar | 199–200 | 1.00 | infobox |
| 815 | Japanese calendar | Kōnin 6 (弘仁６年) | 1.00 | infobox |
| 815 | Javanese calendar | 711–712 | 1.00 | infobox |
| 815 | Julian calendar | 815 DCCCXV | 1.00 | infobox |
| 815 | Korean calendar | 3148 | 1.00 | infobox |
| 815 | Minguo calendar | 1097 before ROC 民前1097年 | 1.00 | infobox |
| 815 | Nanakshahi calendar | −653 | 1.00 | infobox |
| 815 | Seleucid era | 1126/1127 AG | 1.00 | infobox |
| 815 | Thai solar calendar | 1357–1358 | 1.00 | infobox |
| 815 | Tibetan calendar | ཤིང་ཕོ་རྟ་ལོ་ (male Wood-Horse) 941 or 560 or −212 — to — ཤིང་མོ་ལུག་ལོ་ (female Wood-Sheep) 942 or 561 or −211 | 1.00 | infobox |
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