What to reply to a person saying "Good Morning" when my time zone is different? [closed]

Solution 1:

The person saying the greeting is wishing something good for the other.

So if it's morning where you are, I should wish you a "good morning", regardless of my local timezone.

Likewise, if it's afternoon where I am, you should wish me a "good afternoon", regardless of your local timezone.

However, if they're already greeted you but used the wrong part of day, it doesn't really matter, the intention is the same. I would still reply with the appropriate greeting for their local timezone.

Solution 2:

If someone greets you according to their time zone like good morning/evening/afternoon, I think we should wish them the same, rather than explaining them the time zone difference. These would also make them feel comfortable that there is no gap between you people.