[lessnonymous]

So now you have 1 piece of general data (4pm is an OK time to go shopping) and one piece of specific data (not in Spain).

With a global UTC system, you have to remember that in Spain you can shop from 1100 - 1700, but in Melbourne you can shop from 1900 - 0700. In New York you can shop from 0800 - 1600.

Every single place will have it's own data you have to remember, not one piece of general information plus a few specific pieces.