I may be the last person in the country to find this place but just in case:

titantv.com

lists TV programming. Big deal, you say? Actually, it is. You have to configure it but its worth the effort.

Choose your source (over the air, cable (the one you use, Time Warner in my case), etc) and location. It will list only the stations available to you with the channel numbers you use. No conversions required as with most listings that include multiple services.

You can suppress listing of channels you never watch (golf, send money to my church, etc). Select the time frame displayed (I like 6 hours), and more.

Point to a program entry and a popup displays a story synopsis, cast, etc).

There is no advertising. Since a local station's web site sent me to TitanTV I assume its a public service of the broadcasters.

You can check schedules from yesterday through several days ahead.