I was wondering if it was possible for the entire planet to observe the same day of the week simultaneously at any point of time during a day. I did some google searches and found out that the UTC offsets range over a 26 hour time period. If the time taken by earth to complete one rotation is 24 hours, why do we need to have 26 hour range instead of 24? I also saw that the GMT has 24 hour range of offsets. I am pretty confused by all of this.
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There are a handful of places in the Pacific Ocean that normally would be -11 or -12 hours. The problem with those islands is that they have more business relations with Australia and Asia then they do with America. But if you used the time zones as is, 1:00 PM on a Friday on those islands might be 10:00 AM on a Saturday in Australia, and 10 AM on a Monday in Australia is 1:00 PM on a Sunday on that island, so they really only have 4 days a week they can work together. So some of those places decided to just switch to the other side of the date line so that the schedules would line up better.
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