What time is 1515 in military time?

1515 hours is

3:15pm. ( 'pm' are the Latin initials for 'post meridian;, which means 'after noon'.

In the spoken language it is said as 'Quarter past three'. or ' Fifteen minutes past three'.

On the analogue clock, the long narrow finger is pointing to '3' and the short /wider finger is pointing to a position slightly below '3' , but not ar '4'.