#Us time zone map 2019 how to#
#Us time zone map 2019 full#

Canada’s own Newfoundland and Labrador is UTC -3:30 too.Ĥ bonus time zones (around the International Date Line)

#Us time zone map 2019 full#

Second, there are the time zones that are offset by special increments of 30 minutes and 45 minutes (!!!) instead of a nice and even full 1-hour difference (8 have +0:30 and 3 have +0:45).įor example, India is striped red and orange, because its time zone is UTC +5:30 (red is UTC +5, and orange is UTC +6).

Those are the main colors that roughly follow the longitudinal lines (orange, yellow, green, blue, purple, and red - 4 times each).īut of course, some governments didn’t want to keep things easy and follow 1-hour increments, that would be too simple.ġ1 special offset time zones (not in even 1-hour increments) Map of all the time zones in the world (image credit: )įirst, there are the obvious 24 basic 15-degree slices (UTC, UTC +1 to +12, and UTC -1 to -11). You can play around with the full interactive version on too.

#Us time zone map 2019 how to#

So anyway, let’s explain how to see all the time zones in the world on the color-coded map. And as with everything else, they make it worse, unsurprisingly.

Governments love to get involved in every part of our lives, even our sleep schedule. It’s a special offset time zone and a bonus time zone around the International Date Line.īy the way, daylight saving time is obviously very absurd. Yes, 38 is the number of time zones in the world, even though that adds up to 39.īecause of the weird UTC +13:45, which is only for New Zealand’s Chatham Islands (population: 800) and only during daylight saving time, which is counted in both the 2nd and 3rd types. 4 bonus time zones (around the International Date Line).11 special offset time zones (not in even 1-hour increments).There are 3 “types” of time zones, if we can call them that: What explains the number of time zones in the world So let’s look at those slight complications. Those modifications have created quite a few quirks on the time zone map, which I’ll cover in a separate post soon (like the neighboring islands with a 26-hour time difference and how to jump forward 3.5 hours in 1 step, in theory).īut that just explains the weird time zone borders, not the reason there are 38 time zones instead of 24. Other countries are huge and should have multiple time zones, but their government wants everyone to have the same time (like in China, for example). Imagine if major cities had a time zone line right in the middle! That would make no sense. See full-size infographicįirst, time zones don’t just follow the longitudinal lines: they were adapted to follow regional and national borders for convenience. This color-coded map shows them well, but we’ll get back to it in a second. There are in fact 38 time zones in the world, over 50% more than it could be if things were kept simple. Each time zone would measure 15 degrees (360 degrees divided by 24 hours) and would represent a 1-hour difference in solar time.īut it’s not that simple. So, in theory, that would make a nice even 24 time zones if each time zone were just 1 hour apart and were set according to distances only. That rotation process takes 24 hours, so that’s the length of a day. It rotates on its axis, so that gives us night and day periods. The Earth is a sphere, so that’s 360 degrees in longitude.