How does MotionMail deal with time zones?

One of the important benefits of using MotionMail is that you no longer have to worry about sending emails to people in different time zones.  No calculations needed on your side or by the person opening your email. All you have to do is indicate which time zone the timer should use and we do all the math for you. The recipient
sees how much time is left based on the end date and time in the time
zone you select.