A World Time Clock is a clock which displays the time for many countries around the World. The clocks display can take various forms. It could have a clock face that incorporates multiple round analogue clocks with moving hands or multiple digital clocks with numeric readouts with each clock being labelled with the name of the country, city or time zone in the world. It could also be a graphical map of the world with embedded analogue or digital time displays. Another type of world clock is in the form of a circular map of the world that is rotating inside a stationary 24 hour dial ring. Alternatively, the disc can be stationary and the ring itself moves around. A recent form of world clock is the type which projects onto a map representing daytime, used in the Geochron which is a brand name of a particular form of world clock. World time zone wrist watches are also popular, and most modern day watches will have this feature incorporated in their design. These watches have the ability to display the time for every time zone around the world.