> Every place you go you'll have to find out the local time when stores close, or when a tv show is on.
You actually have to find that out for specific stores even with local time, and TV showtimes actually vary by location now (sometimes because they shown at constant universal time, sometimes because they are shown at region-specific time that doesn't happen to equate to a constant either in local or universal time), so neither of those is an additional cost.
Sure, but you can make a reasonable assumption that they're open in between certain hours of the day. I can make a reasonable assumption and say stores are open 11am-4pm everywhere, and I'd be right more times than not.
With a universal time, you'd need to keep track of what "11am-4pm" translates to in your local area and determine it that way.
You actually have to find that out for specific stores even with local time, and TV showtimes actually vary by location now (sometimes because they shown at constant universal time, sometimes because they are shown at region-specific time that doesn't happen to equate to a constant either in local or universal time), so neither of those is an additional cost.