![]() Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory located in Greenwich, London, considered to be located at a longitude of zero degrees. ![]() They are often based on the boundaries of countries or lines of longitude. (That is, the " Time zones world multi polygon" shape file.)Īll I had to do was to Import into Google Earth Pro and I found I had this.Related Time Calculator | Date CalculatorĪ time zone is a region on Earth that uses a uniform time. Once I downloaded the data file and unzipped them, I had a 33.9Mb tz_world_mp.shp file. The data source page also says that "The geometries are primarily derived from the fip10s data (itself derived from the VMAP0 data, provided by the US National Imagery and Mapping Agency-aka NIMA), and then augmented with data presented in the pages for the maps of the United States, Canada, Russia and China. While there are many, I especially liked the tz_world_mp shapefile (which was labeled as having ALL of the timezones worldwide, from 2013. So I downloaded a bunch (trying to look for ones with fairly recent dates), and ended up just importing them into Google Earth Pro to plot them on the globe. Once you do that search, you'll find there area a TON of data sets. Since I know that Google Earth and Google Maps accept KML (as well as KMZ or SHP files), I did a search for: (In particular: ne_10m_time_zones.shp, from the 1:10m cultural vectors.) He also said that NaturalEarth is an amazing collection of map data-he's right.īut that motivated me to look around a bit for other time zone data. When I asked him, Brandon kindly replied that he got the data from and created it from that. I ran across this map before I wrote this Challenge and liked it so much that it led me to re-cast his map as the Challenge. (He has a great blog-highly recommended if you're into maps.) I really like the map that CartographerWithoutBorders author Brandon Rishel made. Can you create your own time zone map by finding data that gives the actual boundary lines for each zone? (If you do make your own map, please share the URL for your creation! We'd all love to see it.) There are many ways to do this. (Which also, by the way, gives the Newfoundland TV station the ability to run "Television World Premiere" as a bumper when it shows some new TV show.)Ģ. It fits better with the local time, and the locals like it. In 1963, the Newfoundland government attempted to bring the province into conformity with the other Atlantic provinces, but withdrew in the face of stiff public opposition." John's, the province's capital and largest city. ![]() While the entire province lies west of the standard meridian for a half-hour time zone, 52.5 degrees west longitude, this is also the near exact meridian of St. Since it was separate from Canada, it had the right to adopt its own time zone. ![]() The island of Newfoundland lies squarely in the eastern half of the Atlantic Time Zone, exactly three and a half hours from Greenwich. The NTZ entry on Wikipedia tells us that "This time zone exists because of the location of the island and the fact that it was a separate dominion when the time zones were established. (Unlike, say, the Pacific Daylight Time Zone, where I live, which is GMT - 7 hours or the Atlantic Standard Time Zone (which PEI follows defined as GMT - 3). Yes, it's NOT an integer number of hours different than GMT. It's pretty straightforward to find out what time it is in Newfoundland-the query:Īnd learn that the time in Newfoundland is GMT-2:30. What time is it in Newfoundland (Canada)? And why is it different than the time in Prince Edward island (which is due south of Newfoundland)? Let's look at our questions one at a time.
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