| Created |
| Associated with 天平の遡及年号 |
| Associated with 天平 |
| Associated with 天平18年閏7月 |
| Associated with 天平18年閏七月 |
| Associated with 天平聖曆 |
| Associated with 天平聖暦 |
| Associated with 聖暦 |
| Associated with 聖曆 |
| Associated with 天平正曆 |
| Associated with 天平正暦 |
| Associated with 天平正歴 |
| Disassociated from 聖暦 |
| Disassociated from 聖曆 |
| Associated with 聖暦 |
| Associated with 聖曆 |
| Associated with 天平聖歴 |