Kenkyū Era
建久 (けんきゅう)
| Japanese Year | Western Year |
|---|---|
| Kenkyū 1 | 1190 |
| Kenkyū 2 | 1191 |
| Kenkyū 3 | 1192 |
| Kenkyū 4 | 1193 |
| Kenkyū 5 | 1194 |
| Kenkyū 6 | 1195 |
| Kenkyū 7 | 1196 |
| Kenkyū 8 | 1197 |
| Kenkyū 9 | 1198 |
| Kenkyū 10 | 1199 |
| Japanese Year | Western Year |
|---|---|
| Kenkyū 1 | 1190 |
| Kenkyū 2 | 1191 |
| Kenkyū 3 | 1192 |
| Kenkyū 4 | 1193 |
| Kenkyū 5 | 1194 |
| Kenkyū 6 | 1195 |
| Kenkyū 7 | 1196 |
| Kenkyū 8 | 1197 |
| Kenkyū 9 | 1198 |
| Kenkyū 10 | 1199 |