| Created |
| Associated with ハンキ・ヘンリー永久暦 |
| Associated with Hanke-Henry Calendar |
| Associated with Hanke–Henry Permanent Calendar |
| Associated with Hanke-Henry calendar |
| Associated with HHPC |
| Associated with ハンキ=ヘンリー・パーマネント・カレンダー |
| Associated with HH Calendar |
| Associated with HH |
| Associated with HHPC Date |
| Associated with Hanke-Henry Date |
| Associated with ハンキヘンリーパーマネントカレンダー |
| Associated with HHPC改定案 |