| Created |
| Associated with 暦の基準日 |
| Associated with 元期 |
| Associated with epoch |
| Associated with 紀元 |
| Associated with 暦元 |
| Associated with 零点 |
| Associated with zero point |
| Associated with ゼロ点 |
| Associated with equinox |
| Associated with 曆元 |
| Associated with エポック |
| Associated with 上元 |
| Associated with 元期の一覧 |
| Associated with 元 |
| Associated with 暦上元 |
| Associated with 暦の起点 |