We should get rid of time zones entirely. They cause problems to no end while providing no real benefit. People would get used to the fact that the sun usually rises at 11PM in New Delhi, for example.
Seriously, though, time zones do not help with that. The sun sets at nine in the evening in Leicester in July. Can't be helped, the length of the day is different.
The earth's axis is tilted so in addition to needing to know the timezone and the date in a solar sense, you also need to know the latitude and need to be able to combine those three things in your head... in practice you just look it up instead.
Time zone info doesn't just pop into your head. You have to look that up too, or at least receive it somehow. Sunrise data could be obtained the same way. The difference being, of course, that you wouldn't need to look up anything that didn't care about the sun, while time zone info needs to be known to make sense of any time.
In fact, I think the general level of confusion and annoyance at a change like that far outweighs the annoyance of dealing with time zones.
Most people in the world don't ever leave their time zone, so why should we get to inflict these changes on them because we're bored with programming them?
(not much of a point there, but somewhat instructive as to just how easy it would be to get used to it...)