A Map of the World Constructed from Time Zones

I want 16:9 version of this for my new Desktop Background.

What's this bit in south America about?

Could be Falkland islands? They're 3 hours behind UTC, but that time zone band it's in would be for -4 Amazon time

Note how you can't easily see the US because we don't try to bend time to our will

Except for the two thirds of the year where you pretend the entire country (apart from Hawai'i and parts of Arizona) is 1300 km (that's 800 miles for those living in the 17th century) east of where it actually is.
edit: closing bracket
- Yeah, and there are totally US state borders on this map. Just like in Russia for example.
  The only big recognizable country here is China.
We literally do though lol

I can't see our Australian coast. We are girt by sea so it should show up and there's space on the map for it.
But yeah regardless this is a very cool map.
- Yeah but none of our coast is the edge of a time zone (unless it showed daylight saving), so we're invisible. Kind of cool.
- It took me quite a while to find, because it's a lot further north than you'd expect.
  But you can see the NT and SA coastlines, as well as the western edge of Cape York Peninsula, and the slightly shifted time zone between western and central time, and the kinked border of Queensland with NT/SA.
  The massive wide Chinese time zone is the same zone as WA, and Australia is just south of the narrowest part of that time zone.

This would have been a really cool album cover in the late 90's.

Is this based purely on UTC offsets?

Are there polygons available for the tz database?

Is this based purely on UTC offsets?
I'm not sure how else it would be done?
Are there polygons available for the tz database?
I presume they are, somewhere. But I didn't make this, and the place I found it wasn't the original source either.

If you make me ruler of the world, I promise I will make it one big time zone and no daylight saving time. Some people will have to adjust that 15:00 is the middle of the night, where they live, but after that it's smooth sailing for everyone.

I'd settle for just no daylight saving time, but that would be great.

Imagine if the first things aliens received from Earth was something like this. They'd have a really fucked up perception of our landmasses, if they even managed to figure out what the hell this was.