President Barack Obama's speech on Syria will start at 9 p.m. Tuesday across many channels.

Those channels will include the broadcast networks ABC, CBS, Fox and NBC as well as cable news channels CNN, Fox News Channel, MSNBC, Fox Business Network and CNBC. WUCF-Channel 24, Orlando's PBS station, will carry the speech.

The speech will affect two reality series. "America's Got Talent" will begin after the speech on NBC.

The season finale of "So You Think You Can Dance" will start at 8 p.m. on Fox, take a break for Obama, then resume. In an alert to viewers, Fox urged them to record the dance finale till 10:30 p.m. so as not to miss out on the end.