Twitter refuses to anonymously let me read tweets, so I don't know what the arguments are, but multiple studies show that the further west you live within a time zone, the shorter your lifespan. Causes include an increase in cancer rates (
https://aacrjournals.org/cebp/article/26/8/1306/283057/Longi...) and suicide (
https://www.sciencedirect.com/science/article/abs/pii/S01650...).
We'd be better of having time zones every half hour, instead of every hour.