YOU SAID:

The lake will overflow on the same day that lightning strikes my cat

INTO JAPANESE

猫が落雷したその日に湖が溢れる

BACK INTO ENGLISH

The lake overflows on the day the cat is struck by lightning

INTO JAPANESE

猫が落雷した日に湖が溢れる

BACK INTO ENGLISH

The lake overflows on the day the cat is struck by lightning