Values for time-zone= argument:

utc+0 utc+1 utc+2 utc+3 utc +3.30 utc+4 utc+4.30 utc+5 utc+5.30 utc+6 utc+6.30 utc+7 utc+8 utc+9 utc+9.30 utc+10 utc+10.30 utc+11 utc+11.30 utc+12 utc-12 utc-11 utc-10 utc-9.30 utc-9 utc-8.30 utc-8 utc-7 utc-6 utc-5 utc-4 utc-3.30 utc-3 utc-2 utc-1 


Descriptions:

Time zone names are standard and non-daylight-saving times
For CSTAR partner areas/countries see "partners:".

utc+0
  greenwich mean time, universal time (coordinated), western european time
  europe (west): iceland, ireland, portugal, united kingdom
  africa (western): burkina faso, canary islands, gambia, ghana, guinea, guinea-bissau, ivory coast, liberia, madeira, mali, mauretania, morocco, senegal, sierra leone, togo, western sahara

utc+1
  central/middle european time
  partners: CLIPS, IRST, UKA
  africa (central/west): algeria, angola, benin, cameroon (central) african republic, chad, congo, congo democratic republic (west), equatorial guinea, gabon, libya, namibia, niger, nigeria, tunisia
  europe (central): albania, austria, belgium, bosnia, croatia, czech republic, france, germany, hungary, italy, kosovo, liechtenstein, luxembourg, makedonia, monaco, netherlands, poland, san marino, serbia, slovakia, slovenia, switzerland
  scandinavia: denmark, norway, sweden

utc+2
  eastern european time
  africa (central/east): botswana, burundi, congo democratic republic (east), egypt, lesotho, malawi, mozambique, rwanda, south africa, sudan, swaziland, zambia, zimbabwe
  europe (east): belarus, bulgaria, estonia, finland, greece, latvia, lithuania, moldava, romania, turkey, ukraine
  middle east (east): cyprus, israel, jordan, lebanon, syria

utc+3
  baghdad time, moscow time
  africa (east): eritrea, ethiopia, kenya, madagascar, somalia, uganda
  middle east (west): saudi arabia, qatar, bahrain, yemen, united arab emirates, iraq, kuwait
  russia zone 2

utc+3.30
  iran

utc+4
  mauritius
  oman
  reunion
  russia zone 3
  seychelles

utc+4.30
  afghanistan

utc+5
  maldives
  pakistan
  russia zone 4

utc+5.30
  bangladesh
  bhutan
  india

utc+5.45
  nepal

utc+6
  russia zone 5
  sri lanka

utc+6.30
  myanmar

utc+7
  cambodia
  indonesia (west)
  russia zone 6
  thailand
  vietnam

utc+8
  china coast time, western australian time
  partners: CAS
  australia (west)
  china
  indonesia (central)
  mongolia
  taiwan
  malaysia
  philippines
  russia zone 7
  singapore

utc+9
  japan time
  partners: ATR, ETRI
  indonesia (eastern)
  japan
  korea (north, south)
  russia zone 8

utc+9.30
  central australian time
  australia (central)

utc+10
  eastern australian time, guam time
  australia (eastern)
  guam
  papua new guinea
  russia zone 9

utc+10.30

utc+11
  russia zone 10

utc+11.30

utc+12
  international date line east time, new zealand time
  russia zone 11
  new zealand

utc-12
  international date line west time

utc-11
  nome time
  american samoa

utc-10
  alaskan-hawaiian time, hawaiian time
  aleutian islands
  hawaii

utc-9.30

utc-9
  alaskan time, yukon time
  alaska

utc-8.30

utc-8
  north american pacific time

utc-7
  north american mountain time

utc-6
  north american central time
  central america
  south america: galapagos islands

utc-5
  north american eastern time
  partners: CMU
  caribbean
  south america (northwest): colombia, ecuador, peru

utc-4
  atlantic time
  south america (central): bolivia, brazil (west), chile, guyana, venezuela

utc-3
  antarctica
  greenland
  south america (east): argentina, brazil (east), french guyana, suriname, uruguay,

utc-3.30

utc-2
  azores time

utc-1
  west african time
  azores
  cape verde