Telling the time.

Telling the time.

In English we often phrases like " quarter past", "five past" , "five to" by themselves when referring to time. Consider the situation when everyone knows it is about say six o'clock and we are all waiting for the bus or the train to arrive. Someone may ask "When is the next bus?" and someone will informally answer "five past". Everyone knows what this means. Is there an equivalent in French? Or do we have to say it formally " (Il est six heures cinq)