The length of one's stay at a place—used for trips, business trips, study abroad, etc.; usually expressed by start and end dates.
滞在期間は一週間を予定しています。
I plan to stay for one week.
観光ビザの滞在期間は最長90日です。
The maximum stay permitted on a tourist visa is 90 days.
出張の滞在期間中はホテルに滞在する予定だ。
During the business trip, I plan to stay at a hotel.