I was talking with a friend about an event that was going to happen in the future. He asked me "What time?" referring, as I discovered after a while, to the day this event was going to happen.
I didn't know that "time" could be used instead of "day". I thought it could be used instead of "hour", or "minute", asking for the time of the event. But my friend meant to ask me the day.
Is this common usage? If two people are talking about something in the future, can one ask the other "what time", meaning the day of the event, not the actual time?