Clock-changing only even remotely makes sense in a very narrow latitudinal range. It is pointless for the latitudes that have the vast majority of the world's population. With Europe dropping DST, the US is essentially the odd man out on the clock-changing nonsense.So, I have been working with our development team in India. They are on IST year-around. DST is nonsense to them.
As CB mentioned up-thread: at least we don't shift our rulers to the left in March, and make all of our distance measurements longer. You know, to save length.