In all the previous posts, it doesn't seem to have come out clearly that the standard phrases we are accustomed to are ' on Monday, on Friday' and ' in the morning, in the afternoon'. That's why you are seeing suggestions like "I'm usually available on Monday and Friday afternoons." and "I am available in the afternoon on Monday, Tuesday and Wednesday." They both follow the normal way of ...
in / on> the afternoons of Monday and Friday? - WordReference Forums
12:00 - a little before twilight (depends on the season) = afternoon a little bit before twilight (or 6pm?) - darkness = evening (but usually we just say night) darkness - sunrise = night sunrise - 12:00 = morning. Mostly the end of afternoon and the start of night depends on the season, I think.
de qué hora a qué hora se considera afternoon in the States?
I can't find the previous thread on this topic. Ignore the clock. If it is before lunch, say good morning. If it is after lunch, but before whatever kind of break happens between 4 and 7, say good afternoon. After that say good evening. Only say good night at the end if you said good evening at the beginning.
Can I use Have a good/nice/great day/afternoon/evening t o close an email? I often read and write "Have a nice day/afternoon" but I wonder if, after 5 pm or so, it is appropriate to say "Have a good evening" to close an email. Although the formers read good to me, the latter sounds a bit to colloquial in an office context. Thanks!