I have Amcrest ProHD Turret PoE 2.8mm IP5M-T1179EW-28MM cameras but I'm sure this would apply across the board because why re-write all the software every time?
I have daylight savings mode enabled, and had the time zone set to London/UK. The clocks went back last Sunday, but they did not on my camera.
If I have my time zone set to London/UK it should follow the daylight savings time of that time zone, not just of the time zone of the location where this software was made!