The timezone meeting planner is a free tool to find the best time for everyone across timezones. The tool works by showing the working hours for each timezone and color coating them. So working hours are in green, awake hours are in light gray, and sleeping hours are in dark gray. To find the best meeting time, simply look for a column that has the most green or light gray boxes. The tool is free, online and does not require a login.

I am working on improvements so any feedback is greatly appreciated. Thanks.