schedule


 * Period || Start || End || Minutes ||
 * Avd. || 9:30 || 10:15 || 45 ||
 * 1st || 10:20 || 11:05 || 45 ||
 * 2nd || 11:10 || 11:57 || 47 ||
 * Lunch || 12:00 || 12:35 || 35 ||
 * 4th || 12:40 || 1:30 || 50 ||
 * 5th || 1:35 || 2:10 || 45 ||
 * 6th || 2:15 || 3:15 || 60 ||