| Created |
| Associated with 年度と改元の関係 |
| Associated with 新元号元年度 |
| Associated with 新元号年度表記 |
| Associated with 平成31年度はあるのか |
| Associated with 平成31年度はあるのか? |
| Associated with 元年度 |
| Associated with 改元と年度の関係 |
| Associated with 令和元年度 |
| Associated with 平成三十一年度 |
| Associated with 平成31年度 |