These are the late night schedules for the four United States broadcast networks that offer programming during this time period, starting September 2018. All times are Eastern or Pacific. Affiliates will fill non-network schedule with local, syndicated, or paid programming. Affiliates also have the option to preempt or delay network programming at their discretion. Schedule New series are highlighted in bold. All times correspond to U.S. Eastern and Pacific Time scheduling (except for some live sports or events). Except where affiliates slot certain programs outside their network-dictated timeslots, subtract one hour for Central, Mountain, Alaska, and Hawaii-Aleutian times. Local schedules may differ, as affiliates have the option to pre-empt or delay network programs, and fill timeslots not allocated to network programs with local, syndicated, or paid programming at their discretion. Such scheduling may be limited to preemptions caused by local or national breaking news or weather coverage (which may force stations to tape delay certain programs in overnight timeslots or defer them to a co-operated station or a digital subchannel in their regular timeslot) and any overrunning major sports events scheduled to air in a weekday timeslot (mainly during major holidays). Stations may air shows at other times at their preference. All sporting events air live in all time zones in correspondence to U.S. Eastern Time scheduling; in situations in which a scheduled sporting event overruns into the late night time period (as with telecasts of NBC Sunday Night Football during Fall, ABC’s Saturday Night Football during Fall and NBA Saturday Primetime during Spring, and Fox’s Thursday Night Football during Fall, all of which typically ran into the 11:00 p.m. ET hour), local late-night programming will start or be joined in progress on owned and affiliated stations (particularly in the Mountain, Central and Eastern Time Zones) after the game’s completion. Sunday–Friday overnights Notes: Early morning newscasts air Sunday–Thursday overnights; late night talk shows air Monday–Friday overnights. ABC, CBS and NBC affiliates offer their rebroadcasts of the network evening newscasts to accommodate local scheduling in selecting markets that do not offer encores of the local late news; some stations with encores of local late news will air alongside the network evening news rebroadcasts leading in to the networks' overnight newscasts, or with syndicated and time-lease programs. ABC, NBC and CBS offer their early morning newscasts via a looping feed (usually running as late as 10:00 a.m. Pacific Time) to accommodate local