177
Naparima BWI
Trinidad & Tobago
North American 1927
Mean for Antigua,
Barbados, Barbuda,
Caicos Islands,
Cuba, Dominican
Republic, Grand
Cayman, Jamaica,
Turks Islands
North American 1927
Mean for Belize,
Costa Rica, El Sal-
vador, Guatemala,
Honduras, Nicaragua
North American 1927
Mean for Canada
North American 1927
Mean for CONUS
(Continental United
States)
North American 1927
Mean for CONUS
(East of Mississippi
River) including Lou-
isiana, Missouri, Min-
nesota
North American 1927
Mean for CONUS
(West of Mississippi
River)
North American 1927
Alaska
North American 1927
Bahamas (Except
San Salvador Island)
North American 1927
Bahamas (San Sal-
vador Island)
North American 1927
Canada (Alberta,
British Columbia)
North American 1927
Canada (Manitoba,
Ontario)
North American 1927
Canada (New
Brunswick, New-
foundland, Nova
Scotia, Quebec)
North American 1927
Canada (Northwest
Territories, Sas-
katchewan)
North American 1927
Canada (Yukon)
North American 1927
Canal Zone
North American 1927
Cuba
North American 1927
Greenland (Hayes
Peninsula)
North American 1927
Mexico
North American 1983
Alaska, Canada,
CONUS
North American 1983
Central America,
Mexico
Observaorio Metereo
1939; Azores (Corvo
& Flores Islands)
Old Egyptian 1907
Egypt
Old Hawaiian
Mean for Hawaii,
Kauai, Maui, Oahu
Old Hawaiian
Hawaii
Old Hawaiian
Kauai
Old Hawaiian
Maui
Old Hawaiian
Oahu
Oman
Oman
Ordinance Survey
Great Britain 1936 -
Mean for England,
Isle of Man, Scotland,
Shetland Islands,
Wales
Ordinance Survey
Great Britain 1936 -
England
Ordinance Survey
Great Britain 1936 -
England, Isle of Man,
Wales
Ordinance Survey
Great Britain 1936 -
Scotland, Shetland
Islands
Ordinance Survey
Great Britain 1936 -
Wales
Pico de las Nieves
Canary Islands
Pitcairn Astro 1967
Pitcairn Island