Es la una menos cuarto.It is a quarter to one.
in numbers is this 12:45With digital times.   Do people do like 2:05   or 2:55  some how.Pondering...  I would guess people have usual ways they do it.    I don't think I have ever said 15 to 2... always  145.    ... and you have appointment at say 2.    The person might say you appointment is in 10 minutes if the time is 1:50.   I think digital clocks have changed things.   I wonder if children growing up now know what clockwise means and counter clockwise. ???   Spanish prolly has words for that too.