Even countries that are on UTC don't save you from this. I had no idea until very recently but there is a time that simply never existed in Iceland!
Wednesday January 2st 1908 00:00 clocks were turned forward 28 minutes to 00:28. So an entire 28 minutes of time never eexisted in Iceland even thought today they are on UTC year round and one might think they are the best and easiest country to handle timezone wise.
Wednesday January 2st 1908 00:00 clocks were turned forward 28 minutes to 00:28. So an entire 28 minutes of time never eexisted in Iceland even thought today they are on UTC year round and one might think they are the best and easiest country to handle timezone wise.
https://mm.icann.org/pipermail/tz/1993-November/009236.html