Abstract: A time board for dynamically displaying the universal time is provided, the board is adaptable to hang on the wall of lounge of an airport, a main railroad station hall, a passenger terminal of a harbor, the office of tele-communication and the classroom of a school, and comprises a flat rectangular board having front panel on which a world map of Mercator Equator Projection is attached containing every country and region of the world which are covered by 24 time zones, each of the time zone occupies 15 degrees longitudes repersenting an hour. An universal date display column and an universal hour display column parallel extend adjacent an upper border of the board from left to right margin thereof each contains 25 display windows spaced apart and in cooperation with the 24 time zones for inserting binary numbered LEDs to dynamically display the date and time differences around the world.