This is true, I stand corrected. I would also like to note that, in my opinion, these time zones are WEIRD.
I offer as proof of this the "Iran Standard Time" zone, which is UTC +3:30, and which only happens in Iran, even though there are other nations that essentially surround it that don't do something like this, several of which are small enough that they're "inside" the width of Iran(although, obviously, not inside Iran as such).
The only reason I can think of for this is that they're, well, Iran.

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Stoke Mandeville, Esq & The Victorian Ballsmiths
"Nobody Want Verdigris-Covered Balls!"