anchor.diff: -"id","cca2","name"
   "1","AD","Europe/Andorra"
   "2","AE","Asia/Dubai"
   "3","AF","Asia/Kabul"
  
positive.code: "7","AM","Asia/Yerevan"
  "8","AO","Africa/Luanda"
  "9","AQ","Antarctica/McMurdo"
  "10","AQ","Antarctica/Rothera"
  "11","AQ","Antarctica/Palmer"
  "12","AQ","Antarctica/Mawson"
  "13","AQ","Antarctica/Davis"
  "14","AQ","Antarctica/Casey"
  "15","AQ","Antarctica/Vostok"
  "16","AQ","Antarctica/DumontDUrville"
  "17","AQ","Antarctica/Syowa"
  "18","AQ","Antarctica/Troll"
  "19","AR","America/Argentina/Buenos_Aires"
  "20","AR","America/Argentina/Cordoba"
  "21","AR","America/Argentina/Salta"
  
negative.code: "92","CA","America/Thunder_Bay"
  "93","CA","America/Iqaluit"
  "94","CA","America/Pangnirtung"
  "95","CA","America/Atikokan"
  "96","CA","America/Winnipeg"
  "97","CA","America/Rainy_River"
  "98","CA","America/Resolute"
  "99","CA","America/Rankin_Inlet"
  "100","CA","America/Regina"
  "101","CA","America/Swift_Current"
  "102","CA","America/Edmonton"
  