YOU SAID:

as the time crept on the window sill exploded with light

INTO JAPANESE

窓枠に忍び寄る時間が光で爆発した

BACK INTO ENGLISH

The time to sneak up on the window frame exploded with light

INTO JAPANESE

窓枠に忍び寄る時間は光で爆発した

BACK INTO ENGLISH

The time to sneak up on the window frame exploded with light