If "good morning" is between 6:00-12:00 PM, and "good afternoon" is between 12:00-6:00 PM then at what time "good day" should be said?
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1In the US, we solve this problem by not ever saying "Good day". It sounds a little foreign and formal to this US English speaker.– stangdonMar 24, 2018 at 13:18
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1@stangdon I live in the US and, while not very common, some people do greet me with "Good day". I know for a fact that some of these people are born, raised, and live in the US.– m_a_sMar 24, 2018 at 17:31
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@m_a_s Fair enough! I was being kind of jocular. I honestly don't hear "good day" very much, compared to "good morning" or "good afternoon" (or "good evening" for that matter).– stangdonMar 24, 2018 at 20:53
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@stangdon I did appreciate the humor there.– m_a_sMar 25, 2018 at 19:05
1 Answer
Anytime "during the day" or "daytime": Oxford / Amer. Heritage / Webster
Generally between sunrise and sunset, if you must put a time for it, usually about 6 AM to 6 PM.
So "good day" can be used instead of "good morning" or "good afternoon" but not instead of "good evening".