| Created |
| Associated with 夏時刻法 |
| Associated with Summer-time Law |
| Associated with Summer-Time Law |
| Associated with 夏時刻法の一部を改正する法律 |
| Associated with Law for Partial Amendment to the Summer-Time Law |
| Associated with 夏時刻法を廃止する法律 |
| Associated with Law for Abolition of Summer-Time Law |
| Associated with サンマータイム法 |