The five prayers and their times are:
1- The Noon Prayer (Dhuhr): Its time begins when the sun declines westward from the middle of the sky. It ends when the shadow of an object becomes equal to the length of that object plus the length of its shadow when the sun was at its zenith (dhilul-istiwa' ). The object may be a straight wooden stick that is plunged upright into the ground. If the sun moves westward from its zenith, the person will notice that the shadow will elongate and lean eastward. This is the sign that the Noon Prayer is in.
2- The Afternoon Prayer (^Asr): Its time begins after the time of Dhuhr ends, and it ends with the setting of the sun. Hence, if the shadow of an object becomes equal to the length of that object plus its length when the sun was at its zenith, then the time of Dhuhr ends and the ^Asr time begins.