Can I Have Two Time Zones/Clocks Displayed On Lock Screen?

I wondered if I can have two time zones within easy reach of my fingers? Either on the lock screen, or at the top of the screen once I have unlocked my iPod. I often have to check between two timezones, and though I can open the clock App, I'd quite like to be able to look at the two times by simply dipping my hand into my pokcet and glancing.