Start time,End time
"2012-08-16 11:55:00","2012-08-16 12:30:00"
"2012-08-16 13:10:00","2012-08-16 13:45:00"
"2012-08-16 14:30:00","2012-08-16 15:30:00"
"2012-08-16 16:10:00","2012-08-16 16:55:00"
"2012-08-16 17:45:00","2012-08-16 18:00:00"
"2012-08-16 19:15:00","2012-08-16 20:15:00"
"2012-08-16 21:15:00","2012-08-16 22:45:00"
"2012-08-16 23:45:00","2012-08-17 00:40:00"