NavList:

Brad, you wrote:
"Amazingly, it shows 24 time zones."

It's just a question of terminology. You can certainly legitimately say that there are 24 nautical time zones. The time changes by one hour as you go from one to the next at precisely defined boundaries of longitude. But there are 25 nautical zone descriptors. This happens because the zone straddling 180° longitude is split into two zone descriptors by the nautical dateline. If we make an identification of time zones to zone descriptors, then there are 25 time zones because there are 25 zone descriptors. But if the nautical time zones are kept as a distinct concept, then there are 24 time zones --but still 25 zone descriptors.

-FER

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