Include option to search through buffered zones

[evansiroky]

While looking up the timezone at a coordinate, it could be useful to also get a list of nearby timezones. A particular use case for this could be a timezone lookup application that would return a best guess of which timezone a user was at based on their history of what timezone they were in. Furthermore, if they made a quick hop into an adjacent timezone (or perhaps received an errant gps coordinate), but then came back to the original timezone, it could be nice to report back the original timezone and not report an unnecessary time change.

This feature is more of an idea, so I'm just going to leave it here and see if it gets any upvotes or comments as to whether it might actually be useful for someone.