On another note, I just realized that my MAC running iOS 10.13.2 High Sierra is doing something weird as well and upon a restart.
I have the timezone set to MANUAL (GMT +3) and i adjust the clock to my local current time (GMT +2) and whenever I restart my computer the clock advances one hour keeping the manual GMT+3 setting but changing the actual clock!
Seems there is a problem with all the latest iOS software for iPhones and MACs when it comes to timezone!
Of course, Apple will not admit this, I know there is a problem and it started happening only when I upgraded to High Sierra 10.13.2 and when I upgraded to 11.2 and started using an iPhone X.
We will have to wait for a new update that will fix this, no use calling Apple they will run you around with Reset All, Reinstall the iOS and perhaps reformat and install fresh ...BS, afterwards when all fails, they will say we will report this to our supervisors!