Regular Hours:- PEAK -- Period of four consecutive hours between 6 a.m. and 1 p.m. EST (or EDT) each day, plus a period of four consecutive hours between 3 p.m. and 10 p.m. EST (or EDT) each day, Monday through Friday. - INTERMEDIATE -- Period between the two peak-hour periods, Monday through Friday, plus a period of 13 consecutive hours between the hours of 6 a.m. and 10 p.m. EST (or EDT) on Saturday.