At what time: When will we leave? At the time that: in the spring, when the snow melts. As soon as: I'll call you when I get there. Whenever: When the wind blows, all the doors rattle. During the time at which; while: when I was young, I was sick all the time. Whereas; although: She stopped short when she ought to have continued. Considering that; if: How can he get good grades when he won't study? What or which time: Since when has this been going on? The time or date: Have they decided the where and when?