Viertel sechs
... German for a quarter past five (time of the day) (externer Link)
In German "viertel sechs" and "viertel vor sechs" must not be confused. The first version means: a quarter on the way from five to six o'clock, which is either 5.15 or 17.15. The latter means: a quarter still before us on the way from five to six o'clock, which can either mean 5.45 or 17.45.