| Created |
| Associated with 元号の選定 |
| Associated with 改元手続き |
| Associated with 改元手続 |
| Associated with 公年号 |
| Associated with 私年号 |
| Associated with 異年号 |
| Associated with 元号の選択 |
| Associated with 元号の制定 |
| Associated with 元号ルール |
| Associated with 偽年号 |
| Associated with 妖僞年號 |
| Associated with 僞年號 |
| Associated with 疑年號 |
| Associated with 疑年号 |
| Associated with 元号らしさ |
| Associated with 起事年号 |
| Associated with 元号制定権 |
| Associated with 官方紀󠄆年 |
| Associated with 民間紀󠄆年 |
| Associated with 民間紀年 |
| Associated with 官方紀年 |
| Associated with 元号名の選定 |
| Associated with 正朔を奉じる |
| Associated with 正朔を奉じ |
| Associated with 私年號 |
| Associated with 新元号案 |
| Associated with 元号名案 |