Publications of the United States Naval Observatory

時差の表

[4] 時差の表と解説が含まれています。

[2] Publications of the United States Naval Observatory ... ser.2 v.4 pt.4. - Full View | HathiTrust Digital Library | HathiTrust Digital Library (2018-10-11 00:44:59 +09:00) https://babel.hathitrust.org/cgi/pt?id=mdp.39015012313147;view=1up;seq=561 - https://babel.hathitrust.org/cgi/pt?id=mdp.39015012313147;view=1up;seq=588
[3] Total solar eclipses of May 28, 1900, and May 17, 1901. - Full View | HathiTrust Digital Library | HathiTrust Digital Library (2018-10-11 00:54:27 +09:00) https://babel.hathitrust.org/cgi/pt?id=mdp.39015086593061;view=1up;seq=569 - https://babel.hathitrust.org/cgi/pt?id=mdp.39015086593061;view=1up;seq=596
[1] Publications of the United States Naval Observatory ... v.4:2 1906. - Full View | HathiTrust Digital Library | HathiTrust Digital Library (2018-10-11 00:24:53 +09:00) https://babel.hathitrust.org/cgi/pt?id=uc1.c2996844;view=1up;seq=591 - https://babel.hathitrust.org/cgi/pt?id=uc1.c2996844;view=1up;seq=618

[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, 1906.

[6] 時差の表部分の日付はない。同じく1906年か。 1904年12月よりも後。

[8] Mathematical Geography は出典を 1905年版とする。 1905年版自体は未発見。 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。

ABSTRACTS OF OFFICIAL REPORTS OF THE KIND OF TIME IN USE BY VARIOUS NATIONS

[5] 出典は >>2、見た感じ >>3 と >>1 も同内容

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:

重複部分省略

[11] 別ページの Table for the Conversion of Time、 Summary of Nations that use Standard Time と統合。

c: Country.
conv: Table for the Conversion of Time
stb: Base of System Summary of ...
st: Summary of Nations that use Standard Time
s: System of Time in Actual Use.
t: 時差
a: Author- ity.

c: Argentina
conv: -04:16:48
t: -04:16:48.2
a: A. E. American Ephemeris
s: The official time in use throughout Argentina is re- ferred to the meridian of Cordoba, 4^h 16^m 48^s.2 west from Greenwich. At 11 a. m. a daily signal is tele- graphed from the Cordoba Observatory. The great- est deviation of local mean time from the offical time would not exceed 26 minutes. La Plata is 25^m 45^s east from Cordoba, and Mendoza, the most western town of importance, is 18^m 32^s west from Cordoba.
stb: Cordoba
st: -04:16:48.2

c: Austria-Hun- gary
t: +01:00:00
s: Standard time does not exist in Austria except for the service of railroads. Central European time, 15° east from Greenwich, is required to be used by all the railways. This is not a matter of law, but is in force by order of the proper authori- ties.
conv: +01:00:00
stb: Greenwich
st: +01:00:00

c: Belgium
conv: +00:00:00
t: +00:00:00
s: The official time in Belgium is calculated from 0 to 24 hours, zero corresponding to mean midnight at Greenwich. The Royal Observatory at Brussels communicates daily the precise hour to the Central Telegraphic Administration and Government offices; also to important corporations. The Telegraphic Administration transmits it to the towns in Bel- gium.
stb: Greenwich
st: +00:00:00

c: Brazil (Rio Janeiro)
conv: -02:52:41

c: British Empire
y: +00:00:00
s: 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 0^h 25^m 21^s.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―
New South Wales, Queensland, } longitude 150° east from Greenwich. +10:00:00
South Australia, including Northern Terri- tory, longitude 142°.5 east from Greenwich. +09:30:00
Tasmania, Victoria. }, longitude 150° east from Green- wich. +10:00:00
West Australia, longitude 120° east from Greenwich. +08:00:00
Canada: The standard time meridian is for―
Alberta,Assiniboia,Athabasca, } longitude 105° west from Green- wich. -07:00:00
British Columbia, longitude 120° west from Greenwich. -08:00:00
Keewatin,Manitoba, } longitude 90° west from Green- wich. -06:00:00
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, 6^h 55^m 25^s 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.
NOTE.―It is reported unofficially that stand- ard time has been adopted in British North Borneo and Labuan. +08:00:00
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.
NOTE―Local mean time of the Madras Ob- servatory is practically used as standard time for India and Ceylon, being telegraphed daily all over the country; but for strictly local use it is generally converted into local mean time. It is proposed soon to adopt the standard time meridian of 5^h 30^m 0^s east from Greenwich for India and Ceylon and the standard time meri- dian of 6^h 30^m 0^s east from Greenwich for Burma.
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.
NOTE.―Local mean time of St. Johns is practically used as standard time for the entire island.
Trinidad (Port of Spain) -04:06:02.5 C. T.
st: Ireland Dublin -00:25:21.1
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
Hongkong Greenwich +08:00:00
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
Alberta, Assiniboia, Athabasca Greenwich -07:00:00
British Columbia Greenwich -08:00:00

c: Australia
conv: western +08:00:00
central +09:30:00
eastern +10:00:00

c: Borneo (British North) and Labuan
conv: +08:00:00

c: British Columbia
conv: -08:00:00

c: Canada
conv: eastern -05:00:00
central -06:00:00

c: England
conv: +00:00:00

c: Fiji Islands (Suva)
conv: +11:53:44

c: Gibraltar
conv: +00:00:00

c: Hongkong
conv: +08:00:00

c: India
conv: Madras +05:20:59
It may be added that England proposes to adopt for India and Ceylon the time meridian of 10^h 30^m 0^s later than Washington (5^h 30^m 0^s later than Greenwich), and for Burma 11^h 30^m 0^s later than Washington (6^h 30^m 0^s later than Greenwich), thus adding that vast region to the long list of countries that use standard time based upon the meridian of Greenwich.

c: Ireland
conv: -00:25:21

c: Jamaica (Kingston)
conv: -05:07:11

c: Malta
conv: +01:00:00

c: Mauritius
conv: +03:50:13

c: Newfoundland (St. Johns)
conv: -03:30:44

c: New Zealand
conv: +11:30:00

c: Nova Scotia
conv: -04:00:00

c: Singapore
conv: +06:55:25

c: South Africa (British)
conv: +02:00:00

c: Chile
conv: -04:42:46
t: -04:42:46.1
s: The official railroad time is that of the meridian of Santiago furnished the central railway station in that city by the Santiago Observatory. This time is telegraphed over the country daily at 7 a. m.
a: A.E.

c: Chile (except Valparaiso)
stb: Santiago
st: -04:42:46.1

t: -04:46:34.1
s: The city of Valparaiso uses the local time furnished by the observatory at the Naval School located there.
a: C. T.

c: China
conv: Shanghai +08:05:43
Saigon +07:06:49
t: +08:05:43.3
a: C. T.
s: An observatory is maintained by the Jesuit mission at Zikawei near Shanghai, and a time-ball suspended from a mast on the French Bund in Shanghai is dropped electrically precisely at noon each day. This furnishes the local time at the port of Shanghai, which is adopted by the railway and telegraph com- panies represented there, as well as by the coastwise shipping. From Shanghai the time is telegraphed to other ports. The cable companies represented in Peking receive this time from Chefoo; the Imperial China Telegraphs from the office of that company at Tientsin. The Imperial Railways of North China use the same time, taking it from the British gun at Tientsin and passing it on to the stations of the railway twice each day, at 8 a. m. and at 8 p. m. No information yet from the Peking-Hankau Railway.

t: +08:00:00
s: NOTE.―Standard time is coming into use all along the east coast of China from Newchwang to Hongkong, and in the interior as far as Hankau.

c: China (east coast)
stb: Greenwich
st: +08:00:00

c: Colombia
conv: -04:56:54
t: -04:56:54.2
a: A. E.
s: At Bogotá the time used is that of the meridian of Bogotá. This time is taken every day at noon in the observatory, but there is no method employed in correcting it daily by signal from acentral ob- servatory. Some few people, such as jewelers, go to the observatory daily, but the great mass of business men, railroad officials, etc., let their timepieces run sometimes for weeks without correcting them, until the inconveniences caused thereby compel them to make the necessary corrections. So far as com- municating the time as corrected in Bogotá to other parts of the country is concerned, this is rendered impossible by the very poor telegraphic service, it frequently taking 4 and 5 days to send messages a distance of from 50 to 100 miles.
stb: Bogotá
st: -04:56:54.2

c: Costa Rica
conv: -05:36:17
t: -05:36:16.9
s: The Government has established an observatory at the capital, San José, in latitude 9° 56′ north, longi- tude 84° 4′ 14″ west from Greenwich; altitude 3.800 feed above see level. The Greenwich meridian is used exclusively to regulate observatory time, which is corrected by observation and reduced to mean time. This time is issued to public offices, railway and telegraph offices, churches, and to all residents whose occupations necessitate correct time. There is no method employed to correct time by signal from the observatory, the corrected time being taken by applicants from the standard chronometer at the observatory.
stb: San José
st: -05:36:16.9

c: Cuba
conv: -05:29:26
t: -05:29:26.0
a: B.
s: The official time of the Republic is the civil mean time of the meridian of Habana and is used by the railroads and telegraph lines of the government. The Cen- tral Meteorological Station gives the time daily to the port and city of Habana as well as to all the telegraph offices of the Republic.
stb: Habana
st: -05:29:26.0

c: Denmark
conv: +01:00:00
t: +01:00:00
s: “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.
stb: Greenwich
st: +01:00:00

c: Equador
conv: -05:14:07
t: -05:14:06.7
a: A. E.
s: The official time is that of the meridian of Quito. It is corrected daily from the National Observatory of Quito.
stb: Quito
st: -05:14:06.7

c: Egypt
conv: +02:00:00
t: +02:00:00
s: Standard time is that of the 30th degree of longitude east from Greenwich, eastern European time, and is therefore 2 hours fast of Greenwich or western Euro- pean time. It is sent out electrically by the stand- ard clock of the observatory to the citadel at Cairo, to Alexandria, Port Said, and Wady-Halfa.
stb: Greenwich
st: +02:00:00

c: France
conv: +00:09:21
t: +00:09:20.9
a: C. T.
s: 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.

c: France, including Algeria and Tunis
stb: Paris
st: +00:09:21.0

c: Algeria
conv: +00:09:21

c: Madagascar (Tananarivo)
conv: +03:10:07

c: Tunis
conv: +00:09:21

c: German Em- pire
conv: Germany +01:00:00
t: +01:00:00
s: 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:
Bismarck Archipelago,Carolines, } based on the meridian of longitude 150° east from Greenwich. +10:00:00
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
Mariane Islands,New Guinea, } based on the meridian of longi- tude 150° east from Greenwich. +10:00:00
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
stb: Greenwich
st: Germany +01:00:00
Southwest Africa (German) +01:00:00
Kiaochau +08:00:00

c: Kiaochau
conv: +08:00:00

c: Greece
conv: +01:34:53
t: +01:34:52.9
a: A. E.
s: By royal decree of September 14, 1895, the time in common use is that of the mean time of Athens, which is transmitted every day from the the observa- tory by telegraph to the towns of the Kingdom.
stb: Athens
st: +01:34:52.9

c: Holland
conv: +00:00:00
s: The local time of Amsterdam is generally used, but Greenwich time is used by the post and telegraph administration and the railways and other transpor- tation companies. The observatory at Leyden com- municates the time twice a week to Amsterdam, The Hague, Rotterdam and other cities, and the telegraph bureau at Amsterdam signals the time to all the other telegraph bureaus every morning. +00:19:32.3 B. +00:00:00
stb: Greenwich
st: +00:00:00
Grand Duchy of Luxembourg +01:00:00

t: +01:00:00
s: In the Grand Duchy of Luxembourg central Euro- pean time is the legal and uniform time.

s: Local mean time for the colonies gives―
Java (Batavia) +07:07:13.7 B.
Sumatra (Padang) +06:41:20.9 B.

c: Java
conv: +07:07:14

c: Honduras
conv: -06:00:00
t: -06:00:00
s: “In Honduras the half hour nearest to the meridian of Tegucigalpa, longitude 87° 12' west from Green- wich, is generally used. Said hour is frequently determined at the National Institute by means of a solar chronometer and communicated by telephone to the Industrial School, where in turn it is indi- cated to the public by a steam whistle. The central telegraph office communicates it to tho various sub- offices of the Republic, whose clocks generally serve as a basis for the time of the villages, and in this manner an approximately uniform time is estab- lished throughout the Republic.” Belize. See British Empire.
stb: Greenwich
st: -06:00:00

c: Italy
conv: +01:00:00
t: +01:00:00
s: Mean solar time of the meridian 15° east from Greenwich is the standard time adopted by royal decree of August 10, 1893, for the Kingdom of Italy. This time is kept in all government establishments, offices, dockyards, and it to be used by all ships of the Italian Navy in the ports of or doing duty on the coast of Italy. All railroads, post and telegraph offices, and Italian coasting steamers, are to use this time and regulate their business and time-tables in accordance therewith. The hours are run from midnight to midnight―that is to say, in Italy 1 p. m. is 13 hours, 5 p. m. is 17 hours, etc.
stb: Greenwich
st: +01:00:00

c: Japan
conv: +09:00:00
t: +09:00:00
s: Imperial ordinance No. 51, of 1886: The meridian that passes through the observatory at Greenwich, Eng- land, shall be the zero (0) meridian. Longitude shall be counted from the above meridian east and west up to 180 degrees, the east being positive and the west negative. From January 1, 1888, the time of the 135th degree east longitude shall be the stand- ard time of Japan.
stb: Greenwich
st: +09:00:00
Formosa, Pescadores, etc +08:00:00

s: Imperial ordinance No. 167, of 1895: The standard time hitherto used in Japan shall henceforth be called Central Standard Time. The time of the 120th degree east longitude shall be the standard time of Formosa, the Pescadores, the Yaeyama, and the Miyako groups, and shall be called western stand- ard time. This ordinance shall take effect from the 1st of January, 1896. +09:00:00 +08:00:00

c: Korea
conv: +09:00:00
s: Tokyo time, 135° east from Greenwich, is telegraphed daily to the Imperial Japanese Post and Telegraph Office at Seoul. Before December 1, 1904, this was corrected by subtracting 30 minutes, which nearly represents the difference in longitude, and was then used by the railroads, street railways, and post and telegraph offices, and most of the better classes. Since December 1, 1904, the Japanese post-offices and railways in Korea have begun to use Tokyo time. In the country districts the people use sun dials to some extent. +08:30:00 +09:00:00
stb: Greenwich
st: +09:00:00

c: Mexico
conv: -06:36:27
t: -06:36:26.7
a: A. E.
s: The National Astronomical Observatory of Tacubaya regulates a clock twice a day which marks the local mean time of the City of Mexico, 6^h 36^m 26^s.7 west from Greenwich, and a signal is raised twice a week at noon upon the roof of the national palace, such signal being used to regulate the city's public clocks. This signal, the clock at the central tele- graph office, and the public clock on the cathedral, serve as a basis for the time used commonly by the people. The general telegraph office transmits this time daily to all of its branch offices. Not every city in the country uses this time, however, since a local time, very imperfectly determined, is more commonly observed. The following railroad companies use standard City of Mexico time corrected daily by telegraph: Cen- tral, Hidalgo, Xico and San Rafael, National and Mexican. The Central and National railroads correct their clocks to City of Mexico time daily by means of the noon signal sent out from the Naval Observatory at Washington, and by a similar signal from the observatory at St. Louis, Mo.
stb: City of Mexico
st: -06:36:26.7

c: Nicaragua
conv: -05:45:10
t: -05:45:10.0
s: Managua time is issued to all public offices, railways, telegraph offices, and churches, in a zone that ex- tends from San Juan del Sur, latitude 11° 15' 44" north, to El Ocotal, latitude 12° 46' north, and from El Castillo, longitude 84° 22' 37" west from Green- wich, to Corinto, longitude 87° 12' 31" west from Greenwich. The time of the Atlantic ports is usually obtained from the captains of ships.
stb: Managua
st: -05:45:10.0

c: Norway
conv: +01:00:00
t: +01:00:00
s: Central European time, longitude 15° east from Green- wich, is the standard and, as far as known, is used everywhere in the country. Telegraphic time sig- nals are sent out once a week to the telegraph sta- tions throughout the country from the observatory of the Christiania University.
stb: Greenwich
st: +01:00:00

c: Panama
conv: Colon -05:19:39
t: -05:19:39.0
a: B.
s: The railroad company uses the local mean time of Colon, 5^h 19^m 39^s west from Greenwich. The time is obtained from chronometers of the company's New York steamers. The Central and South Ameri- can Cable Co. now cables 75th meridian time, 5^h west from Greenwich, daily from Washington, and this will probably be adopted as the standard. -05:00:00
stb: Greenwich
st: -05:00:00

c: Peru
conv: -05:09:03
t: -05:09:03.0
a: B.
s: There is no official time. The railroad from Callao to Oroya takes its time by telegraph from the noon signal at the naval school at Callao, which may be said to be the standard time for Callao, Lima, and the whole of Central Peru. The railroad from Mol- lendo to Lake Titicaca, in southern Peru, takes its time from ships in the Bay of Mollendo.
stb: Calla0
st: -05:09:03.0

c: Portugal
conv: -00:36:20
t: -00:36:20.5
s: Standard time is in use throughout Portugal, and is based upon the meridian of Lisbon (9° 5′ 7″). It is established by the Naval Observatory in the Royal Gardens at Lisbon, and from there sent by telegraph to every railway station through- out Portugal having telegraphic communication. Clocks on railway station platforms are 5 minutes behind, while clocks outside of stations are 2 min- utes ahead of standard time.
stb: Lisbon
st: -00:36:20.5

c: Russia
conv: Pulkowa +02:01:19
Irkutsk +06:57:05
Vladivostok +08:47:31
t: +02:01:18.6
a: A. E.
s: 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.

c: Russia (western)
stb: Pulkowa
st: +02:01:18.6

c: Salvador
conv: -05:56:32
t: -05:56:32.0
s: The Government has established a national observa- tory at San Salvador which issues time on Wednes- days and Saturdays, at noon, to all public offices, telegraph offices, railways, etc., throughout the Re- public.
stb: San Salvador
st: -05:56:32.0

c: Santo Do- mingo
t: -04:39:32.0
a: C. T.
s: Local mean time is used, but there is no central ob- servatory and no means of correcting the time. The time differs from that of the naval vessels in these waters by about 30 minutes. Local mean time gives, for Santo Domingo City......

c: Servia
conv: +01:00:00
t: +01:00:00
a: C. T.
s: Central European time, longitude 15° east from Green- wich, is used by the railroad, telegraph companies, and people generally. Clocks are regulated by telegraph from Budapest every day at noon.
stb: Greenwich
st: +01:00:00

c: Spain
conv: +00:00:00
t: +00:00:00
s: Official time is the mean time of the meridian of Greenwich, obtained from the Madrid Observatory. It is used by railroad and telegraph companies and the people of Madrid and provinces generally, in some of which, however, local time is still used for private matters.
stb: Greenwich
st: +00:00:00

c: Sweden
conv: +01:00:00
t: +01:00:00
s: Central European time, 15° east from Greenwich, is the standard. It is sent out every week by tele- graph from the Stockholm Observatory.
stb: Greenwich
st: +01:00:00

c: Switzerland
conv: +01:00:00
t: +01:00:00
s: Central European time is at present the only legal time. It is sent out daily by telegraph from the Cantonal Observatory at Neuchâtel.
stb: Greenwich
st: +01:00:00

c: Turkey
conv: +02:00:00
t: +02:00:00
s: Two kinds of time are used, i. e., Turkish and east- ern European time, the former for the natives and the latter for Europeans. The railroads generally use both, the latter for the actual running of trains and Turkish time-tables for the benefit of the na- tives. Standard Turkish time is used generally by the people, sunset being the base and twelve hours be- ing added for a theoretical sunrise. The official clocks are set daily so as to read 12 o'clock at the theoretical sunrise, but the tower clocks are set only two or three times a week. The government tele- graph lines use Turkish time throughout the Em- pire and St. Sophia time, 1^h 47^m 32^s ahead of Paris, for telegrams sent out of the country.
stb: Greenwich
st: +02:00:00

c: United States
s: 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
conv: 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
stb: Greenwich
st: 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

c: Uruguay
conv: -03:44:49
t: -03:44:48.9
a: C. T.
s: The time in common use for railways, telegraph com- panies, and the public in general, is the mean time of the meridian of the dome of the Metropolitan Church of Montevideo. The correct time is indicated by a strik- ing clock in the tower of that church. An astro- nomical geodetic observatory, with meridian tele- scope and chronometers, has now been established and will in the future furnish the time It is pro- posed to install a time-ball for the benefit of naviga- tors at the port of Montevideo. An electric time service will be extended throughout the country, using at first the meridian of the church and after- wards that of the national observatory, when con- structed.
stb: Montevideo
st: -03:44:48.9

c: Venezuela
conv: -04:27:44
t: -04:27:43.6
a: C. T.
s: The time is computed daily at the Caracas Observa- tory, longitude 66° 55′ 53.6″ west from Greenwich, from observations of the sun and is occasionally tele- graphed to other parts of Venezuela. The cathe- dral clock at Caracas is corrected by means of these observations. Railway time is at least 5 minutes later than that indicated by the cathedral clock, which is accepted as standard by the entire people. Some people take time from the observatory flag, which always falls at noon.
stb: Caracas
st: -04:27:43.6

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[9] 原文は Public Domain。

[10] 本項も CC0 とします。

Publications of the United States Naval Observatory

時差の表

ABSTRACTS OF OFFICIAL REPORTS OF THE KIND OF TIME IN USE BY VARIOUS NATIONS

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