Kenchō Era
建長 (けんちょう)
| Japanese Year | Western Year |
|---|---|
| Kenchō 1 | 1249 |
| Kenchō 2 | 1250 |
| Kenchō 3 | 1251 |
| Kenchō 4 | 1252 |
| Kenchō 5 | 1253 |
| Kenchō 6 | 1254 |
| Kenchō 7 | 1255 |
| Kenchō 8 | 1256 |
| Japanese Year | Western Year |
|---|---|
| Kenchō 1 | 1249 |
| Kenchō 2 | 1250 |
| Kenchō 3 | 1251 |
| Kenchō 4 | 1252 |
| Kenchō 5 | 1253 |
| Kenchō 6 | 1254 |
| Kenchō 7 | 1255 |
| Kenchō 8 | 1256 |