You can answer the question by saying "It is on" and then the date and/or time. Examples: It is on tonight at 7pm. It is on tomorrow. It is on in two days. It is on today at 1pm. There isn't a difference between a TV show and a TV program. Americans use the terms interchangeably. Hope that helps! Mark

'It's on at 5 o'clock' or 'It's on in five minutes.' As for your second question, I'll give you an answer from a British English perspective. Apart from films, news and weather reports, most things you see on TV can be called TV programmes. For example, documentaries, dramas, discussions, soap operas and so on, are all TV programmes. In British English, 'TV show' suggests light entertainment - music, dance and celebrity interviews, for example, often with a celebrity host. In American English, the meaning of the word 'show' is much broader, and can be used to cover many of the things that British English would not call a 'show'. A soap opera or drama series, for example, would be a 'TV programme' in GBE but a 'TV show' in AE. I hope that helps.

“when is it" is refering to the time the show airs on a station. So just tell the person what time the show will be on T. V. Also there is no difference, Television show is just the informal way of saying Television program.

It means which chanel or perhaps now days which media

A TV show is the same as a TV program. If someone asks you "When is it on?" they want to know the day and time, so a proper answer would be something like "Thursdays at 8:00 p.m." or whatever the correct information would be.