No Arizona time?

Small point, but potentially annoying. When setting the system up (this includes the PSP and PS3) when asked for time zone, there is no option for Arizona time zone (yes we are special and we have our own time zone). Essentially we do not have DST and never change our clocks. Right now we are PST but come October we will be MST. Is there someway to make the system add AZ time? or do i have to keep changing either the time zone twice a year? What have my fellow Arizonians done? My computer and 'the other console' have the option for AZ time.