Abstract: A time display device and a method of displaying time in both 12-hour and 24-hour systems and in any time zones are disclosed. The time display device includes a first time display component which may include a 12-hour system circular member, a second time display component which may include a 24-hour system circular member, and a time zone display member. The time display device also includes a time indication component which may include at least an hour hand for indicating the hour of a time on both 12-hour and 24-hour circular members. The hour hand and the time zone display member advance at a speed of one complete turn every 12 hours. The 24-hour circular member advances at half of the speed of the hour hand. Time zone markings on the time zone display member indicate time in different time zones as shown on the 24-hour circular member.