Jōgan Era
貞観 (じょうがん)
| Japanese Year | Western Year |
|---|---|
| Jōgan 1 | 859 |
| Jōgan 2 | 860 |
| Jōgan 3 | 861 |
| Jōgan 4 | 862 |
| Jōgan 5 | 863 |
| Jōgan 6 | 864 |
| Jōgan 7 | 865 |
| Jōgan 8 | 866 |
| Jōgan 9 | 867 |
| Jōgan 10 | 868 |
| Jōgan 11 | 869 |
| Jōgan 12 | 870 |
| Jōgan 13 | 871 |
| Jōgan 14 | 872 |
| Jōgan 15 | 873 |
| Jōgan 16 | 874 |
| Jōgan 17 | 875 |
| Jōgan 18 | 876 |
| Jōgan 19 | 877 |