YOU SAID:

It’d been two days since he’d arrived in the arctic.

INTO JAPANESE

彼が北極に到着してから2日が経っていた。

BACK INTO ENGLISH

Two days had passed since he had arrived at the North Pole.

INTO JAPANESE

彼が北極に到着してから2日が経過した。

BACK INTO ENGLISH

Two days had passed since he had arrived at the North Pole.