到着 とうちゃく予定 よてい時刻 じこくでしょう
tōchakuyotei jikokudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 到着予定時刻

1. Probably arriving around…; Estimated time of arrival.

Polite
Presumptive
Conjecture