What is the discretionary time for each prayer in minutes?

Prayer times are determined by cosmic signs, and the questioner can refer to reliable calendars to pinpoint them by hour and minute.

As for the preferred (Ikhtiyari) times for prayers, they are as follows: - Fajr (Dawn) Prayer: From the appearance of true dawn until al-Isfar (the widespread lightness before sunrise). - Dhuhr (Noon) Prayer: From the sun's zenith until the shadow of everything becomes equal to its length. - Asr (Afternoon) Prayer: From the point where the shadow of a thing exceeds its length until the beginning of the sun's yellowing or until the shadow of everything becomes twice its length. - Maghrib (Sunset) Prayer: From sunset, and the preferred time ends with the duration required to perform the prayer and its conditions. - Isha (Night) Prayer: From the disappearance of the red twilight until the first third or half of the night.

These are the preferred times, beyond which prayer should not be delayed except for a valid excuse.