Aight, well I added Sydney, which doesn't have DST in effect:

Code:
alias world-clock {
  var %gmt = $asctime($calc($gmt - $daylight),HH:nn)
  var %amsterdam = $asctime($calc($gmt + 7200 - $daylight),HH:nn)
  var %new-york = $asctime($calc($gmt - 14400 - $daylight),HH:nn)
  var %sydney = $asctime($calc($gmt + 36000 - $daylight),HH:nn)

  echo -a 07 $+ %gmt 05GMT -07 %amsterdam 05Amsterdam-NL -07 %new-york 05New-York-USA -07 %sydney 05Sydney-AUS.
}


13:55 GMT - 15:55 Amsterdam-NL - 09:55 New-York-USA - 23:55 Sydney-AUS.
This seems to be correct also, so I think I can do this for any other city as well.

Thanks very mucho laugh