Is it okay to say "how is your day?" This is not a natural thing to say. You could say eg 'How is your day going?', as long as there is some part of the day left. It would sound a bit odd in the evening. and "have a nice day!" This is usually said as a form of 'good-bye'. Again. OK
"How is your day?" is not right unless you add "going?" at the end, but "How was your day?" works without the "going?" part at the end. Am I correct in thinking this way?
How about "How was your day going?" Would it make it wrong if you added "going?" (I'm just trying to see other possibilities here)
"How is your day?" is not right Don't think of it as 'not right'. Think of it as not a natural thing to say. unless you add "going?" at the end, but "How was your day?" works without the "going?" part at the end. Am I correct in thinking this way?