Horological Meandering

Bought it on my trip to Singapore where I had the honour of meeting Mr Genta and Mr Roth when both brands were under the wings of the Hour Glass Company . The meet was so inspirational that I had acquired my first Roth and also GG Gefica Safari ... Brings...  

but haven't figured out the timezone complication, How do you know the time in Karachi or Denver?

Thanks for sharing