Questions & Answers about Kalkış saati yaklaşıyor.
• kalkış is a noun meaning “departure.”
• It comes from the verb kalkmak (to get up; to depart) plus the nominalizing suffix -ış, which turns a verb into the noun denoting the action or event.
• Here -i is the 3rd-person singular possessive suffix, not an accusative marker. It shows “the time of departure.”
• In context you know saati is the head of a compound (noun 1 + possessive noun 2), so it’s a possessive form, not a direct-object case.
• In strict Genitive-Possessive constructions you’d say kalkışın saati (“the departure’s time”).
• However, Turkish often forms noun-noun compounds by dropping the genitive ending on the first noun, especially in fixed expressions. In announcements and timetables you typically see kalkış saati.
• yaklaşıyor is the present-continuous form of yaklaşmak (to approach).
• It literally means “(it) is approaching” and conveys that the departure time is getting close right now.