Not observed here in AZ… no muss, no fuss 
Surely you knew it’s only to stop the curtains fading?
'Cept on Navajo Rez.
Brutal, considering last nights World Series went extra innings, which unfortunately did not fare well to the Toronto Blue Jays. I’m lazing about with 5 hrs of sleep and seriously contemplating a morning nap.
it confuses the cows, thats why we dont have it in Qld, which makes it bloomin awkward for those that live at Coolangatta and work in Tweed Heads 
Indeed - it’s been 30+ years since I drove around there, what happens on the mobile/cell when you criss-cross the Dark Side, does the time keep adjusting?
What happens when the cellphone picks up base stations (towers) on both sides?
The mobile phone radio network has a system time and the phones sync their
internal time to the towers and the towers stay in sync with each other.
This is necessary to coordinate the hand-overs from tower to tower when the phone
moves (usually along a road).
The (courtesy) time displayed to the user is not important for the system.
This time can even be incorrect as far as the system is concerned.
I’ve driven down to Tweed Heads to go diving during the mismatch. The phone jumps from one time to another as you drive down the different roads to the river