[7] APPENDIX IV. THE PRESENT STATUS OF THE USE OF STANDARD TIME, EDWARD EVERETT HAYDEN, Lient, Commander, U. S. N., Head of the Department of Chronometers and Time Service, PUBLICATIONS OF THE UNITED STATES NAVY OBSERVATORY, SECOND SERIES, Volume IV, Part IV, GOVERNMENT PRINTING OFFICE, .
[8] Mathematical Geography は出典を 版とする。 版自体は未発見。 Mathematical Geography の該当部分は時差の表の一部を再構成したものになっている模様。 細かな表現の違いが多いが、 原文の改訂で変化したものか、転載時に手が入ったものか不明。 掲載情報自体がやや異なる部分があるので、 原文自体でかなり改訂されているとは推測される。
[12] 同じ著者の論文 THE CHRONOMETER AND TIME SERVICE OF THE UNITED STATES NAVAL OBSERVATORY AND THE PRESENT STATUS OF STANDARD TIME の表の改訂版とみられます。
The following abstracts have been prepared from official reports collected and forwarded to the Superintendent of the United States Naval Observatory by the Department of State, through the Diplomatic and Consular Service, and the Depart- ment of the Navy, through the Bureau of Navigation and the Office of Naval Intelligence:
Great Britain: The meridian of Greenwich is the stand- ard time meridian for― England, Isle of Man, Orkneys, Shetland Islands, Scotland.
Ireland: The meridan of Dublin 0h 25m 21s.1 west from Greenwich is the standard time meridian. -00:25:21.1 A.E.
Colonies:
Africa: The meridan of longitude 30° east from Greenwich is the standard time meridian for― Cape Colony, Natal, Orange River Colony, Rhodesia, Transvaal. +02:00:00
Australia: The standard time meridian is for―
South Australia, including Northern Terri- tory, longitude 142°.5 east from Greenwich. +09:30:00
West Australia, longitude 120° east from Greenwich. +08:00:00
Canada: The standard time meridian is for―
British Columbia, longitude 120° west from Greenwich. -08:00:00
New Brunswick, longitude 75° west from Greenwich. -05:00:00
Nova Scotia, longitude 60° west from Green- wich. -04:00:00
Ontario, longitude 75° west from Greenwich. -05:00:00
Prince Edward Island, longitude 60° west from Greenwich. -04:00:00
Quebec, longitude 75° west from Greenwich. -05:00:00
Chatham Island, longitude 172°.5 east from Green- wich. +11:30:00
Gibraltar, longitude of Greenwich +00:00:00
Hongkong, longitude of 120° east from Greenwich +08:00:00
Malta, longitude 15° east from Greenwich +01:00:00
New Zealand, longitude 172°.5 east from Green- wich. +11:30:00
Strait Settlements, longitude of Fort Fullerton, Singapore, 6h 55m 25s east from Greenwich. +06:55:25.0 B. Bowditch's American Practical Navigator
Assuming local mean time for other British colonies gives the following results:
Antigua (St. John) -04:07:21.9 B.
Arabia (Aden) +02:59:55.9 B.
Bahamas (Nassau) -05:09:27.9 B.
Barbados (Bridgetown) -03:58:29.2 C. T. Connaissance des Temps
Bermudas (Hamilton) -04:19:26.4 B.
Borneo (Labuan) +07:41:01.0 B.
N
Falkland Islands (Port Stanley) -03:51:26.0 B.
Fiji Islands (Suva) +11:53:44.3 B.
Guiana (Demerara) -03:52:46.0 B.
Honduras (Belize) -05:52:46.7 B.
India (Madras) +05:20:59.1 A. E.
India (Calcutta) +05:53:20.8 B.
India (Bombay) +04:51:15.7 A. E.
N
Jamaica (Kingston) -05:07:10.7 B.
Mauritius (Royal Alfred Observatory) +03:50:12.6 A. E.
Newfoundland (St. Johns) -03:30:43.6 B.
N
Trinidad (Port of Spain) -04:06:02.5 C. T.
England and Scotland Greenwich +00:00:00
Cape Colony, Transvaal, Orange River Colony, Rhodesia, Natal Greenwich +02:00:00
India and Ceylon Madras +05:20:59.1
Straits Settlements Singapore +06:55:25
West Australia, British North Borneo, Labuan Greenwich +08:00:00
South Australia Greenwich +09:30:00
New South Wales, Queensland, Tasmania, Victoria Greenwich +10:00:00
New Zealand Greenwich +11:30:00
Newfoundland St. Johns -03:30:43.6
Nova Scotia and Prince Edward Island Greenwich -04:00:00
New Brunswick, Ontario, Quebec Greenwich -05:00:00
Keewatin, Manitoba Greenwich -06:00:00
It may be added that England proposes to adopt for India and Ceylon the time meridian of 10h 30m 0s later than Washington (5h 30m 0s later than Greenwich), and for Burma 11h 30m 0s later than Washington (6h 30m 0s later than Greenwich), thus adding that vast region to the long list of countries that use standard time based upon the meridian of Greenwich.
Shanghai +08:05:43
Saigon +07:06:49
“Standard time is fixed at one hour earlier than that of Greenwich, corresponding to mean solar time of the 15th degree of longitude east from Greenwich.” In Iceland, the Faroe Islands, and the Danish West Indies, local mean time is used.
Local mean time for the Danish West Indies gives
Curaçao -04:35:46.9 B.
St. Thomas -04:19:43.5 B.
Local mean time for Iceland gives for Reikiavik -01:27:40.0 B.
Legal time in France, Algeria, and Tunis, is local mean time of the Paris Observatory. Local mean time is considered as legal in other French colonies.
This gives the following results:
Cochin-China, Cambodia, and Anam (Saigon) +07:06:48.2 C. T.
Corsica (Ajaccio) +00:34:57.3 B.
Guadaloupe (Basse-Terre) -04:06:56.6 C. T.
Madagascar (Tananarivo) +03:10:07.0 C. T.
Marquesas Islands (Port Resolution) -09:16.36.0 B.
Martinique (St. Pierre) -04:04:44.8 C. T.
Miquelon (St. Pierre) -03:44.42.5 C. T.
New Caledonia (Nouméa) +11:05:48.4 C. T.
Paumotu Archipelago (Pitcairn Island) -08:40:23.2 C. T.
Senegal (Port Dakar) -01:09:42.0 B.
Tongking (Hai-Phong) +07:06:39.5 C. T.
Germany: The standard time is the mean solar time of the meridian of longitude 15° east from Green- wich.
Colonies: Mean solar time has been adopted for the following:―
Kiaochau, based on the meridian of longitude 120° east from Greenwich. +08:00:00
Southwest Africa (German), based on the merid- ian of longitude 15° east from Greenwich. +01:00:00
It is proposed to adopt standard time for the follow- ing:
East Africa (German), based on the meridian of longitude 30° east or possibly 37°.5 east from Greenwich. +02:00:00 +02:30:00
Kamerun, based on the meridian 15° east from Greenwich. +01:00:00
Samoa, based on the meridian of longitude 180° east from Greenwich, but only after an under- standing with the Government at Washington. +12:00:00
Toga, based on the meridian of Greenwich +00:00:00
Local mean time for the colonies gives―
Java (Batavia) +07:07:13.7 B.
Sumatra (Padang) +06:41:20.9 B.
Formosa, Pescadores, etc +08:00:00
All telegraph stations use the time of Pulkowa (St. Petersburg). At railroad stations both local and Pulkowa time are given, from which it is to be in- ferred that for all local purposes local time is used. Local mean time gives for―
Nicolaeff +02:07:53.8 A. E.
Riga +01:36:28.2 A. E.
Irukutsk +05:57:04.7 C. T.
Vladivostok +08:47:30.9 C. T.
Standard time based upon the meridian of Greenwich is universally used and is sent out daily by telegraph to most of the country and to Habana and Panama from the Naval Observatory at Washington; and to the Pacific coast, from the observatory at Mare Island Navy-Yard, California. Standard times used are as follows:
Porto Rico, Atlantic standard time meridian of longitude 60° west from Greenwich. -04:00:00
Atlantic coast and Panama Canal Zone, eastern standard time, meridian of longitude 75° west from Greenwich. -05:00:00
Mississippi Valley, central standard time, merid- ian of longitude 90° west from Greenwich. -06:00:00
Rocky Mountain Region, mountain standard time, meridian of longitude 105° west from Greenwich. -07:00:00
Pacific coast, Pacific standard time, meridian of longitude 120° west from Greenwich. -08:00:00
Sitka, Alaska standard time, meridian of longi- tude 135° west from Greenwich. -09:00:00
Hawaiian Islands, Hawaiian standard time, merid0 ian of longitude 157°.5 west from Greenwich. -10:30:00
Tutuila, Samoa, Samoan standard time, meridian of longitude 172°.5 east from Greenwich. -11:30:00
Guam, Guam standard time, meridian of longi- tude 142°.5 east from Greenwich. +09:30:00
Philippine Islands, Philippine standard time, meridian of longitude 120° east from Greenwich. +08:00:00
From Maine to South Carolina -05:00:00
From Dakota and Michigan to Texas and Florida -06:00:00
From Montana to Arizona and New Mexico -07:00:00
Pacific Coast States and Nevada -08:00:00
Sitka, Alaska -09:00:00
Hawaiian Islands -10:30:00
Tutuila, Samoa -11:30:00
Guam +09:30:00
Philippine Islands +08:00:00
Porto Rico -04:00:00
Panama Canal Zone -05:00:00
Eastern standard time -05:00:00
Central standard time -06:00:00
Mountain standard time -07:00:00
Pacific standard time -08:00:00
Alaska standard time -09:00:00
Hawaiian standard time -10:30:00
Samoan standard time -11:30:00
Porto Rico standard time -04:00:00
Philippine standard time +08:00:00
Guam standard time +09:30:00
[9] 原文は Public Domain。