When did Leon Rom die?

Leon Rom was a fictional character from the Star Wars universe. He was a human male who served as the Imperial governor of the planet Ryloth during the reign of the Galactic Empire. He was killed by the Twi'lek rebel leader Hera Syndulla during the events of the animated series Star Wars Rebels.

Leon Rom died sometime between 19 BBY and 5 BBY, during the early years of the Galactic Empire. The specific date is not explicitly stated in the Star Wars canon.