Transcription
A map of the world with vertical lines marking the time zones from UTC-12 to UTC+12. It has a legend:
Wrong Time
"Natural time zones" are 15° in longitude. Land in red observes a time other than the zone it lies within. Smaller islands depict their 12 nautical mile territorial sea, for visual effect. In some cases this includes a state's archipelagic waters.
Plate Carrée projection, WGS-84 datum. December 2018 © International Mapping, all rights reserved.
Problem with a single time zone is working across them. They're a huge pain in the ass, but it would be even worse without them. Keeping track of who is in what time zone is difficult, but keeping track of everyone's schedule without using them as a placeholder would be horrible. 'what time is a good time for breakfast where you are' and then doing the math anyway just isn't as convenient as 'oh, it's already 5pm where you are'