Some Longitudinal Lines

I have a soft spot for the unintentional readers of Twelve Mile Circle. Search engines send them randomly to my domain like pollen blowing in the wind. They aren’t consciously trying to arrive at my site. In fact they never even knew it existed. Simply, the all-knowing search engines told these mystery readers that I could satisfy their curiosity. These are all false positives and the volume increases as I publish more pages.

I love the search engines. I suspect most of you arrived here originally from a search engine query too. That’s how I’ve been able to build a nice audience of like-minded geo-oddity enthusiasts over the last couple of years. It’s nice to have people that return regularly, read my simple articles and post their thoughts. However, most false positives generate nothing but a single digital fingerprint. Those people will click over to the next promising link and I will lose them forever.

For the next few entries I’m going to focus on legitimate search engine queries rather than the questionable ones for once. I hope you enjoy the topics even though I’m pandering blatantly to the search engine crowd.

Two questions I’ve noticed in my web logs deal with lines of longitude. So let’s take a closer look at them.


Why Aren’t Time Zones Straight Lines?

This question comes up all the time as I review my user statistics. So let’s focus on it directly. It does have a certain appeal on the surface, doesn’t it? Think of how this would simplify maps. That’s certainly true although it would also create a bunch of unintended consequences. I’m going to examine a situation that could conceivably cause problems in Europe if we followed that method.

Europe Time Zones Map. Image by Goran, CC BY-SA 3.0, via Wikimedia Commons

Let’s pick on the boundary between UTC+1 (Central European Time) and UTC+2 (Eastern European Time). The zones here respect international boundaries. Now let’s draw a line straight down a major longitude, 20° east in this example, and replicate the current time zone boundary as closely as possible.

It creates the blue line on this map.

This provides a good pictorial reason why time zones are not straight lines. Countries would be split. Towns and cities would split. Even individual neighborhoods would be split. Imagine the nightmare of trying to figure out the proper time in any borderland area. Watches would have to come with GPS chips to flip back-and-forth to the proper time as one moved across an arbitrary line. People would be early or late for their appointments, shopping or transportation connections. The line looks pretty on a map but it has no realistic connection to the ground.

It’s much better to let each country decide how to apply time zones that meet the needs of its citizenry.


Is Any Part of Wisconsin Further East than Florida?

I’m endlessly fascinated by longitudes. Seriously. They play all sorts of sneaky tricks on one’s mind, like: which location is further west, Reno or Los Angeles, Glasgow or Madrid, UC Berkeley or Stanford?

I must admit that I’d never thought about the Wisconsin-Florida situation before. Even so, it seems to be something that multiple people want to understand and it’s easy enough to figure out. I think the question should probably be rephrased: Is any part of Wisconsin further east than any part of Florida?

The easternmost point of Wisconsin is found within Lake Michigan northwest of Manitou Island (approximately 86.25° west longitude). The westernmost point of Florida is located within the Perdido River about seven miles east of Bay Minette, Alabama (approximately 87.63° west longitude). That right there tells us that some portion of Wisconsin is further east than some portion of Florida. Let’s draw a couple of lines on the map above along the longitudes of easternmost Wisconsin and westernmost Florida.

The part of Wisconsin further east than some of Florida falls within the shaded area, as does the part of Florida further west than some of Wisconsin. It’s a bigger overlap than I expected. Thank you, anonymous lurkers, for asking.


Posted

in

, , ,

by

Comments

3 responses to “Some Longitudinal Lines”

  1. Mike Lowe Avatar

    Cool work on the Wisconsin section. My parents are from Milwaukee so I like WI.

  2. Joshua Avatar
    Joshua

    It’s interesting that Russia has a small bit in Eastern European Time zone at Kaliningrad. Then again since the fall of the USSR, Kaliningrad is an interesting detached remnant from the rest of Russia.

  3. twitchard Avatar

    A Snapple fact brought me here. “Wisconsin had parts farther east than parts of Florida”

Leave a Reply

Your email address will not be published. Required fields are marked *

Latest Comments

  1. Clint, 24 March 2021. I’m 89 years old and have traveled the 100th Meridian for years between Uvalde, TX and…

  2. Many of these comments are very interesting, have enjoyed reading. We cross several times a year as well going from…