A conversation from class:
Student: When does the afternoon finish and the evening begin?
Me: About four thirty, five.
Student: Wow, you’re so precise about these things in English!
Me: No, not 4.35, it’s around four thirty or five o’clock.
Student: ah, okay.
Do you know when to use one or the other?
Here’s a quick reminder:
Morning until 12 noon: Good morning
12 noon until around four thirty to five o’clock (16:30-17:00): Good afternoon
Alternative for morning and afternoon until five o’clock: Good day (less common)
Five o’clock (17:00) onwards, for the rest of the day to say hello: Good evening
At the end of the day, saying goodbye or going to bed: Good night
From the film The Truman Show
Try this little quiz to see if you have the right idea.