Clock Zone Timing

Clock Zone Timing is a scheduling tool for people who regularly need to find a time that works across two different timezones, without doing mental arithmetic. Open the app and you see a strip of twenty-four rows — one for each hour of the day. The left column shows the hours in your city. The right column shows the corresponding time in the other person's city. Every row is the same moment in time, expressed in two different timezone labels. The rows are color-coded: green for the hours when both of you are in working hours, dark for the hours when one of you is asleep, amber for early morning and evening. The overlap is visible in one glance. You do not calculate anything. Tap a green row and a formatted message fills the field below: "Does Thursday 9am London / 5pm Tokyo work for you?" One tap copies it. You paste it into the message thread. The whole process takes under a minute. A…