Figured it out - Press & hold 'A' then press 'D'. THEN press 'B' to toggle through the selections to set T1. T2 (for another time zone) is up or down in the offset. Good luck!

btw - A, B buttons are from top to bottom on left and C, D are top to bottom right

Ok so all you need to do is make sure youre on the 'time' screen then press the 'A' button aka the 'light' button and hold it down then you'll get into the settings. From there the ''mode" button or 'B' button changes modes and the other 2 buttons change the settings. If this doesn't work it will probably say OFFSET. Which means you're in the time 2 mode, as seen on your screen as t2. So you need to hold the start/stop button to get into T1 mode, then follow the steps above.

Iran's offset is +4:30. I can't set this in T2 mode because it doesn't have half offsets. Help.