| Created |
| Associated with 紀年法 |
| Associated with 紀元 |
| Disassociated from 紀元 |
| Associated with 紀元 |
| Associated with 紀年 |
| Associated with 循環型紀年法 |
| Associated with 独自紀元 |
| Associated with 外国からの公文書における年の表示方法 |
| Associated with year numbering |
| Associated with Calendar era |
| Associated with calendar era |
| Associated with calendar |
| Associated with calendar systems |
| Associated with calendar system |
| Associated with 循環紀年法 |
| Associated with 積年紀年法 |
| Associated with 通年紀年法 |
| Associated with 法定紀年法 |
| Disassociated from 外国からの公文書における年の表示方法 |
| Disassociated from 法定紀年法 |
| Associated with 年紀 |
| Associated with 年記 |
| Disassociated from 年紀 |
| Associated with 年表示の方法 |
| Associated with 年の表示 |
| Associated with 年表示 |
| Associated with year numbering system |
| Associated with 纪年 |
| Associated with 纪元 |
| Associated with 整数型紀年法 |
| Associated with Year numbering |
| Associated with 年代表記 |
| Associated with 記年法 |
| Associated with 循環式紀年法 |
| Associated with 기년법 |
| Associated with year naming scheme |
| Associated with 纪年法 |