Can you change different texts by hours automatically?

Hello everyone, I have a problem and I don’t know how to set a time for a text for a radio app that I’m doing.

The question is:
How to make a text appear in the notifications for a certain time of hours?
Since I want the name of the program that is running at a certain time to appear in the app, but I don’t know how to place the text so that it automatically appears at the same time the program is broadcast. Help me please?

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If I understood you correctly, the app will be open there will be no problem.
Just create a clock that check for the time at each 60 seconds for example. If time = the time you want, show whatever you want.