I believe no one else mentioned this but… China is a case study of why this is a terrible idea
The entire PRC uses the same time zone, even though in any other parts of the world, China should have been split to at least 3 different timezones
It is very disorienting to try and go for breakfast in Tibet at 9 am to find that nothing is open and the sun is just out… So yeah. Imagine if this is extended to 12-hr differences
I believe no one else mentioned this but… China is a case study of why this is a terrible idea
The entire PRC uses the same time zone, even though in any other parts of the world, China should have been split to at least 3 different timezones
It is very disorienting to try and go for breakfast in Tibet at 9 am to find that nothing is open and the sun is just out… So yeah. Imagine if this is extended to 12-hr differences
Wikipedia has a nice summary of this