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South African Standard Time

South African Standard Time (SAST) is the time zone used by all of South Africa as well as Eswatini and Lesotho. The zone is two hours ahead of UTC (UTC+02:00) and is the same as Central Africa Time. Daylight saving time is not observed in either time zone. Solar noon in this time zone occurs at 30° E in SAST, effectively making Pietermaritzburg at the correct solar noon point, with Johannesburg and Pretoria slightly west at 28° E and Durban slightly east at 31° E. Thus, most of South Africa's population experience true solar noon at approximately 12:00 daily.

Time zones of Africa:
 UTC-01:00  Cape Verde Time[a]
 UTC±00:00  Greenwich Mean Time
 UTC+01:00 
 UTC+02:00 
 UTC+03:00  East Africa Time
 UTC+04:00 
a The islands of Cape Verde are to the west of the African mainland.
b Mauritius and the Seychelles are to the east and north-east of Madagascar respectively.

The western Northern Cape and Western Cape differ, however. Everywhere on land west of 22°30′ E effectively experiences year-round daylight saving time because of its location in true UTC+01:00 but still being in South African Standard Time. Sunrise and sunset are thus relatively late in Cape Town, compared to the rest of the country.

To illustrate, daylight hours for South Africa's western and easternmost major cities:

Summer solstice Winter solstice
Cape Town 05:32–19:57 07:51–17:45
Durban 04:52–18:56 06:51–17:04

The South African National Time Standard, or 'SA Time' Master Clock, is maintained at the Time and Frequency Laboratory of the National Metrology Institute of South Africa (NMISA) at Pretoria and is distributed publicly by an NTP Internet Time service.[1][2]

History edit

Before 8 February 1892, there was no uniformity of time in South Africa and local mean time was in use at the various towns. In 1892, a railway conference was held in Bloemfontein and discussed difficulty of working a railway system, in the absence of a uniform time system. The governments of the Orange Free State, Transvaal and the Cape Colony officially adopted a uniform standard time of UTC+01:30 which was defined as mean time 22.5° east of Greenwich.[3] On 1 March 1903 GMT+02:00 was adopted, which became the current UTC+02:00 when UTC replaced GMT for most purposes.[4][5]

Prior to 1 March 1903, the Colony of Natal was already using a uniform time supplied by the Natal Observatory. The observatory's local mean time was (UTC+01:52).

South Africa observed a daylight saving time of GMT+03:00 (UTC+03:00) between 20 September 1942 to 21 March 1943 and 19 September 1943 to 19 March 1944.[6]

South African Standard Time is defined as "Coordinated Universal Time plus two hours" (UTC+02:00) as defined in South African National Government Gazette No. 40125 of 8 July 2016.[7]

See also edit

References edit

  1. ^ . Archived from the original on 13 February 2014. Retrieved 27 March 2014.
  2. ^ . Archived from the original on 9 February 2014. Retrieved 27 March 2014.
  3. ^ "Timezone change of 1892". TimeAndDate.com.
  4. ^ Wood, H. E. (1927–1928). "1". Official Year Book of the Union of South Africa and of Basutoland, Bechuanaland Protectorate, and Swaziland. No. 10. p. 61.
  5. ^ "Timezone change of 1903".
  6. ^ "Timezone change of 1925 and 1949".
  7. ^ "Government Gazette No: 40125" (PDF). 8 July 2016. (PDF) from the original on 28 January 2020. Retrieved 28 January 2020.

south, african, standard, time, sast, redirects, here, source, code, review, static, application, security, testing, chinese, space, agency, shanghai, academy, spaceflight, technology, sast, time, zone, used, south, africa, well, eswatini, lesotho, zone, hours. SAST redirects here For source code review see Static application security testing For the Chinese space agency see Shanghai Academy of Spaceflight Technology South African Standard Time SAST is the time zone used by all of South Africa as well as Eswatini and Lesotho The zone is two hours ahead of UTC UTC 02 00 and is the same as Central Africa Time Daylight saving time is not observed in either time zone Solar noon in this time zone occurs at 30 E in SAST effectively making Pietermaritzburg at the correct solar noon point with Johannesburg and Pretoria slightly west at 28 E and Durban slightly east at 31 E Thus most of South Africa s population experience true solar noon at approximately 12 00 daily Time zones of Africa UTC 01 00 Cape Verde Time a UTC 00 00 Greenwich Mean Time UTC 01 00 Central European TimeWest Africa Time UTC 02 00 Central Africa TimeEastern European TimeEgypt Standard TimeSouth African Standard Time UTC 03 00 East Africa Time UTC 04 00 Mauritius Time b Seychelles Time b a The islands of Cape Verde are to the west of the African mainland b Mauritius and the Seychelles are to the east and north east of Madagascar respectively The western Northern Cape and Western Cape differ however Everywhere on land west of 22 30 E effectively experiences year round daylight saving time because of its location in true UTC 01 00 but still being in South African Standard Time Sunrise and sunset are thus relatively late in Cape Town compared to the rest of the country To illustrate daylight hours for South Africa s western and easternmost major cities Summer solstice Winter solsticeCape Town 05 32 19 57 07 51 17 45Durban 04 52 18 56 06 51 17 04The South African National Time Standard or SA Time Master Clock is maintained at the Time and Frequency Laboratory of the National Metrology Institute of South Africa NMISA at Pretoria and is distributed publicly by an NTP Internet Time service 1 2 History editBefore 8 February 1892 there was no uniformity of time in South Africa and local mean time was in use at the various towns In 1892 a railway conference was held in Bloemfontein and discussed difficulty of working a railway system in the absence of a uniform time system The governments of the Orange Free State Transvaal and the Cape Colony officially adopted a uniform standard time of UTC 01 30 which was defined as mean time 22 5 east of Greenwich 3 On 1 March 1903 GMT 02 00 was adopted which became the current UTC 02 00 when UTC replaced GMT for most purposes 4 5 Prior to 1 March 1903 the Colony of Natal was already using a uniform time supplied by the Natal Observatory The observatory s local mean time was UTC 01 52 South Africa observed a daylight saving time of GMT 03 00 UTC 03 00 between 20 September 1942 to 21 March 1943 and 19 September 1943 to 19 March 1944 6 South African Standard Time is defined as Coordinated Universal Time plus two hours UTC 02 00 as defined in South African National Government Gazette No 40125 of 8 July 2016 7 See also editNoon GunReferences edit Time amp Frequency and Fibre Optics Archived from the original on 13 February 2014 Retrieved 27 March 2014 Time Archived from the original on 9 February 2014 Retrieved 27 March 2014 Timezone change of 1892 TimeAndDate com Wood H E 1927 1928 1 Official Year Book of the Union of South Africa and of Basutoland Bechuanaland Protectorate and Swaziland No 10 p 61 Timezone change of 1903 Timezone change of 1925 and 1949 Government Gazette No 40125 PDF 8 July 2016 Archived PDF from the original on 28 January 2020 Retrieved 28 January 2020 Retrieved from https en wikipedia org w index php title South African Standard Time amp oldid 1164197670, wikipedia, wiki, book, books, library,

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