how long is a quarter of an hour?

best answer
A time measurement is referred to as a “quarter of an hour.” To symbolize a quarter of an hour the minute needle of an analogue clock is rotated 90 degrees. A quarter-hour is 15 minutes long. A quarter-hour is an example. The quarter hour begins at 630 p.m. and ends at 645 p.m. from 630 p.m. to 645 p.m. I’ll be there in 15 minutes not 30.