Kapan kamu datang ke rumahku?
When are you coming to my house?

Aku lagi tidur waktu kamu telpon.
I was sleeping when you called.

Kapan kamu mulai belajar bahasa Indonesia?
When did you start learning Indonesian?

Kita makan malam bersama waktu liburan.
We had dinner together during the holidays.

Aku tidak tahu kapan dia pergi.
I don’t know when he/she left.