On my iPhone 4S iOS 6.1.3, the Calendar app shows a default city in my time zone that is not where I live. Can I change the default city to my city? It is a recognized city, but is not the current default city.
Mac Pro dual Quad-Core Intel Xeons Early 2008; 16GB RAM; MacOS X 10.11.6, iOS 9.3.5
I have to confess that I'm not familiar with IOS 6.x, but I wonder if you tried to change the default city. AFAICT that can't hurt, and I figure 'the worst' that can happen is that iOS won't recognize your home city.