I’m aware it needs to be triggered by some data, which indeed could be the server’s time(zone).
To be honest I like your offer, however I’d rather see someone create a plugin for this because I know many people are looking for this (it improves your sites usability quite well) and I want to implement this on multiple sites in which case a plug-and-play plug-in would be very efficient.
I don’t see any purpose of this thing. What when you get users from other time zones? And you have for example web shop. He don’t care is on your country day or night he will buy or read some info on your site.
I’m pretty sure this is only for you. Don’t think there’s other people looking for this feature, it’s pretty “personal” request and as @Zaccc stated, it may be different part of the day for some other people
This is quite in ‘huge’ demand, see for example Apple’s ‘night mode’ on iOS devices. Be aware that such functions only come trough when an incredible amount of interest is met - which is the actual case.
I’m even willing to place a bet on the succes of a potential plug-in that will provide day/night features.
I must mention though, in my case it’s only for local visitors/websites. For example, my site is only open to German visitors, only one timezone / switch is needed (per 24H).