Enjoy the video
I don't know about the rest of the earth, but time zones certainly do exist on our many trips in the USA from Dallas to Los Angeles by car on the highways.
When you go west from Texas to California :
You set your clocks and watches back 1 hour. when you cross from Texas into New Mexico and go from Central Daylight Time Zone to Mountain Daylight Time Zone.
Arizona stays on Mountain Standard Time the entire year, so you change to Mountain Standard Time when you cross from New Mexico to Arizona part of the year.
Arizona is on Mountain Standard Time Zone and California is on Pacific Daylight Time Zone part of the year so you don't reset your watches and clocks part of the year.
Otherwise you set your watches and clocks back 1 hour when you cross from Arizona to California from Mountain Standard Time to Pacific Standard Time.
That might seem a bit complicated and confusing to an outsider but that's how it works.
I don't know if you are just joking......
But time zones DO exist.😁
How many time zones are there in your country ?
Just some trivia on time zones.:
The old Concorde SST airplanes went so fast you got to New York before you left Paris according the local times in New York and Paris when going west.
Back in the old days of transatlantic steamships , in particular the Titanic, clocks were set ahead or back so many minutes according to how many miles you were in that time zone each night rather than just setting them ahead or back 1 hour when you go from one time zone to another. This has caused a lot of confusion to the Titanic Historians.
For example if you were going west and passed through half of a time zone the ship's clocks would be set back 30 minutes instead of 1 hour. This setting of the clocks was usually done at midnight. Of course GMT (Greenwch Mean Time) as it was called in Titanic's time is now called UTC ( Universal Time Coordinated ) remains the same wherever you are in the world. You just convert this to local time by the difference in hours such as UTC + 2 or UTC - 2 for example for your time zone.
You can check your time in your time zone and compare it with the times in other time zones time on www time gov .
It might be interesting to compare local times of all the users on line on this forum of those in different parts of the world.
At UTC or GMT of 01:08 AM or 01:08 hours just after midnight on the morning of Friday, July 19, 2018 in London, England, UK
Here in Irving, Texas, USA it is 8:08 PM or 20:08 hours Central Daylight Savings Time (CDST) on the evening of Thursday, July 18, 2019
Any others ?