I have been poking around Google trying to learn some C# for NinjaTrader and pieced together something to remind me when Opt Expry is. I'm not a coder, so it may be ugly code-wise, but since the whole DateTime thing is pretty confusing to me, I am hacking a bit trying to understand it better. I actually don't know if this would work globally, but it seems to work for me so far in my time zone... (it might still need adjustments...)