MUDs are played by people from many different parts of the world.
Therefore, when announcing events, the time itself is not sufficient
but the corresponding zone must also be given. You can use the table
below to convert any given time to time of the desired time zone.

  Zone                            Offset   Where 
  ----                            ------   ------
   EET     Eastern European        +2      Finland, Eastern Europe
   CET     Central European        +1      Western Europe, Sweden
   GMT     Greenwich Mean          none    United Kingdom, Portugal
   AST     Atlantic Standard       -4      Halifax
   EST     Eastern Standard        -5      NY, DC, Toronto, Montreal
   CST     Central Standard        -6      Chicago, Houston, Winnipeg
   MST     Mountain Standard       -7      Denver, Calgary, Edmonton  
   PST     Pacific Standard        -8      LA, San Fransisco, Vancouver

Different countries have different dates for Daylight Savings Time.
In most of Europe, DST dates 1994 are March 27 - Oct 25. DST
adjustment is +1 hour.

   An event is supposed to occur at 23:00 CET and your timezone is EST:

                           -->     23.00 CET
   CET offset      +1      -->     22.00 GMT
   EST offset      -5      -->     17.00 EST
                           -->      5 pm EST

   An event is supposed to occur at 1 pm MST and timezone is EET DST:

                           -->      1 pm MST
                           -->     13.00 MST
   MST offset      -7      -->     20.00 GMT
   EET offset      +2      -->     22.00 EET
   DST adjustment  +1      -->     23.00 EET DST

Given offset is subracted from the local time to get GMT and added
to GMT to get time for a specific zone.