In a state of perpetual evening

Probably one of the weirder language things I’m having trouble adjusting to are the greetings for the time of day. This may not seem like such a big deal, but people in Côte d’Ivoire are quite gregarious. Everyone greets everyone. While in the US, a nod, or depending on the setting, just eye contact can be acceptable, if you don’t verbally respond back, it’s considered offensive and people will repeat their greeting to you as they assume you simply didn’t hear it because everyone responds. I don’t really mind this and on a great many levels, it’s quite enjoyable to engage with people in a country, as opposed to just being an outsider unsure of how to interact.
The one thing that gets me though is the actual greeting. In the US, traditionally we’ve done away with “good morning”, “good afternoon”, “good evening”, and “good night” to use one size fits all phrases such as, “hey”. The art of linguistic articulation is not one of America’s finer points…
In Spanish, I’ve gotten used to “buenos días”, “buenas tardes”, and “buenas noches” as well as the respective times of day in which they’re used. Croatian took a bit more getting used to with “dobro jutro” until about 10, “dobar dan” until about 18 (depending on the time of year), “dobar večer” until about 22, and “laku noć” at the very end of the night, which also works in place of “goodbye” for the evening. The times are surprisingly punctual for these different phrases and people have some kind of very accurate clock in their head to just know when to say them.
As French would have it, there is only “bonjour” and “bonsoir”; “good day” and “good evening”. This probably seems simpler overall, but when one is used to having all the shades of time through the day, it seems blunt. Obviously, you get used to it, although while writing this, I said, “bonsoir” at 10:45 in the morning to a fellow who walked in the door.
In Côte d’Ivoire, probably the hardest thing is getting used to saying these at the right time. The reason that I made such a dumb gaffe with this fellow who walked in is that “bonsoir” starts at noon. Yes, the “evening” starts in the middle of the day and while people tend to get up around 6, they go to bed at 12 (don’t ask me how they do it) and so, evening is making up the vast majority of their day.
I still find it weird and I doubt that I’ll really quite get it at any point, although I’ll just go along with it as that’s the way the day goes here.