an onscreen TV guide saying what 'all channels now' are showing.
A TV guide on the tv showing DIY on Sunday is on channel 814 at 9:00.
The TV guide is displayed on a TV monitor that shows what is on now and what is next.
A TV displays the TV Guide menu listing the programs on "now" and "next" on channels 813 through 820.
Screen that says DIY on Sunday on the screen.