When we sold our chometz in previous years, the Rov included on his form ARE YOU Going to a different time zone for Pesach? If so, he made sure to take care of selling the chometz before the zman in Israel.
Simcha, I hope you used a false name, as it is not safe to advertise that you are leaving the house for yom tov. You don’t want robbers to invade your home, chas v’ shalom.