Trellian WorldTime 2
This graphical utility displays the time in cities around the world, and includes viewable time zones, which displays night and day around the world.
World Time features cloud maps, which allow you to view animated cloud formations from around the world using satellite imaging technology.
World Time's advanced options allow you to toggle the shadow map, clouds and date and time settings. World Time also includes weather forecast information for any city and hotel information with booking facility.