Wikipedia and the bulletin are both good sites to find out information on the doomsday clock, whether you are informed on the subject already and are looking for more information or whether you are new to the doomsday clock and want some more information.

I recently saw a documentary in which the history of the doomsday clock was discussed, and they never equated the clock to a literal time span, so the symbol is to be taken figuratively.

Doomsday Clock

Modern Marvels - 1994 The Doomsday Clock 11-16 was released on:

USA: 7 April 2005

The Doomsday Clock represents the impeding doom of an upcoming disaster . In the film this threat is fulfilled by Veidt's ambitions to unify humanity against a common foe who is Dr.Manhattan .

The Doomsday Clock has a real life equivalent ; see related link below .