SpeedyTutor operates on Universal Time Coordinated (UTC). 
 
See the table below for time conversions. 
 
 00:00 12:00 AM
 01:00 1:00 AM
 02:00 2:00 AM
 03:00 3:00 AM 
 04:00 4:00 AM 
 05:00 5:00 AM
 06:00 6:00 AM 
 07:00 7:00 AM 
 08:00 8:00 AM
 09:00 9:00 AM

 10:00 10:00 AM 
 11:00 11:00 AM
 12:00 12:00 PM
 13:00 1:00 PM
 14:00 2:00 PM 
 15:00 3:00 PM 
 16:00  4:00 PM 
 17:00 5:00 PM 
 18:00 6:00 PM
 19:00 7:00 PM 

 20:00 8:00 PM
 21:00 9:00 PM
 22:00 10:00 PM
 23:00 11:00 PM
 00:00 12:00 AM 

Users can select their timezones as well in their profiles. However, it will be in UTC.