Vanguard section, for zic and other parsers that support negative DST. Rearguard section, for parsers lacking negative DST; see ziguard.awk. 2:00 - CAT 1994 Mar 21 0:00 From Paul Eggert (2017-04-07): The official date of the 2017 rule change was 2017-10-24. See: http://www.lac.org.na/laws/annoSTAT/Namibian%20Time%20Act%209%20of%202017.pdf 1:00 Namibia %s 2017 Oct 24 2:00 - CAT End of rearguard section. Angola Benin Cameroon Central African Republic Democratic Republic of the Congo (western) Republic of the Congo Equatorial Guinea Gabon Niger Nigeria From P Chan (2020-12-03): GMT was adopted as the standard time of Lagos on 1905-07-01. Lagos Weekly Record, 1905-06-24, p 3 http://ddsnext.crl.edu/titles/31558#?c=0&m=668&s=0&cv=2&r=0&xywh=1446,5221,1931,1235 says "It is officially notified that on and after the 1st of July 1905 Greenwich Mean Solar Time will be adopted throughout the Colony and Protectorate, and that it will be necessary to put all clocks 13 minutes and 35 seconds back, recording local mean time." It seemed that Lagos returned to LMT on 1908-07-01. [The Lagos Standard], 1908-07-01, p 5 http://ddsnext.crl.edu/titles/31556#?c=0&m=78&s=0&cv=4&r=0&xywh=-92,3590,3944,2523 says "Scarcely have the people become accustomed to this new time, when another official notice has now appeared announcing that from and after the 1st July next, return will be made to local mean time." From P Chan (2020-11-27): On 1914-01-01, standard time of GMT+0:30 was adopted for the unified Nigeria. Colonial Reports - Annual. No. 878. Nigeria. Report for 1914. (April 1916), p 27 https://libsysdigi.library.illinois.edu/ilharvest/Africana/Books2011-05/3064634/3064634_1914/3064634_1914_opt.pdf#page=27 "On January 1st [1914], a universal standard time for Nigeria was adopted, viz., half an hour fast on Greenwich mean time, corresponding to the meridian 7° 30' E. long." Lloyd's Register of Shipping (1915) says "Hitherto the time observed in Lagos was the local mean time. On 1st January, 1914, standard time for the whole of Nigeria was introduced ... Lagos time has been advanced about 16 minutes accordingly." In 1919, standard time was changed to GMT+1. Interpretation Ordinance (Cap 2) The Laws of Nigeria, Containing the Ordinances of Nigeria, in Force on the 1st Day of January, 1923, Vol.I [p 16] https://books.google.com/books?id=BOMrAQAAMAAJ&pg=PA16 "The expression 'Standard time' means standard time as used in Nigeria: namely, 60 minutes in advance of Greenwich mean time. (As amended by 18 of 1919, s. 2.)" From Tim Parenti (2020-12-10): The Lagos Weekly Record, 1919-09-20, p 3 details discussion on the first reading of this Bill by the Legislative Council of the Colony of Nigeria on Thursday 1919-08-28: http://ddsnext.crl.edu/titles/31558?terms&item_id=303484#?m=1118&c=1&s=0&cv=2&r=0&xywh=1261,3408,2994,1915 "The proposal is that the Globe should be divided into twelve zones East and West of Greenwich, of one hour each, Nigeria falling into the zone with a standard of one hour fast on Greenwich Mean Time. Nigeria standard time is now 30 minutes in advance of Greenwich Mean Time ... according to the new proposal, standard time will be advanced another 30 minutes". It was further proposed that the firing of the time guns likewise be adjusted by 30 minutes to compensate. From Tim Parenti (2020-12-10), per P Chan (2020-12-11): The text of Ordinance 18 of 1919, published in Nigeria Gazette, Vol 6, No 52, shows that the change was assented to the following day and took effect "on the 1st day of September, 1919." Nigeria Gazette and Supplements 1919 Jan-Dec, Reference: 73266B-40, img 245-246 https://microform.digital/boa/collections/77/volumes/539/nigeria-lagos-1887-1919 Zone NAME STDOFF RULES FORMAT [UNTIL]
Attributed Statements:
Paul Eggert (2017-04-07):
The official date of the 2017 rule change was 2017-10-24. See: http://www.lac.org.na/laws/annoSTAT/Namibian%20Time%20Act%209%20of%202017.pdf 1:00 Namibia %s 2017 Oct 24 2:00 - CAT End of rearguard section. Angola Benin Cameroon Central African Republic Democratic Republic of the Congo (western) Republic of the Congo Equatorial Guinea Gabon Niger Nigeria
P Chan (2020-12-03):
GMT was adopted as the standard time of Lagos on 1905-07-01. Lagos Weekly Record, 1905-06-24, p 3 http://ddsnext.crl.edu/titles/31558#?c=0&m=668&s=0&cv=2&r=0&xywh=1446,5221,1931,1235 says "It is officially notified that on and after the 1st of July 1905 Greenwich Mean Solar Time will be adopted throughout the Colony and Protectorate, and that it will be necessary to put all clocks 13 minutes and 35 seconds back, recording local mean time." It seemed that Lagos returned to LMT on 1908-07-01. [The Lagos Standard], 1908-07-01, p 5 http://ddsnext.crl.edu/titles/31556#?c=0&m=78&s=0&cv=4&r=0&xywh=-92,3590,3944,2523 says "Scarcely have the people become accustomed to this new time, when another official notice has now appeared announcing that from and after the 1st July next, return will be made to local mean time."
P Chan (2020-11-27):
On 1914-01-01, standard time of GMT+0:30 was adopted for the unified Nigeria. Colonial Reports - Annual. No. 878. Nigeria. Report for 1914. (April 1916), p 27 https://libsysdigi.library.illinois.edu/ilharvest/Africana/Books2011-05/3064634/3064634_1914/3064634_1914_opt.pdf#page=27 "On January 1st [1914], a universal standard time for Nigeria was adopted, viz., half an hour fast on Greenwich mean time, corresponding to the meridian 7° 30' E. long." Lloyd's Register of Shipping (1915) says "Hitherto the time observed in Lagos was the local mean time. On 1st January, 1914, standard time for the whole of Nigeria was introduced ... Lagos time has been advanced about 16 minutes accordingly." In 1919, standard time was changed to GMT+1. Interpretation Ordinance (Cap 2) The Laws of Nigeria, Containing the Ordinances of Nigeria, in Force on the 1st Day of January, 1923, Vol.I [p 16] https://books.google.com/books?id=BOMrAQAAMAAJ&pg=PA16 "The expression 'Standard time' means standard time as used in Nigeria: namely, 60 minutes in advance of Greenwich mean time. (As amended by 18 of 1919, s. 2.)"
Tim Parenti (2020-12-10):
The Lagos Weekly Record, 1919-09-20, p 3 details discussion on the first reading of this Bill by the Legislative Council of the Colony of Nigeria on Thursday 1919-08-28: http://ddsnext.crl.edu/titles/31558?terms&item_id=303484#?m=1118&c=1&s=0&cv=2&r=0&xywh=1261,3408,2994,1915 "The proposal is that the Globe should be divided into twelve zones East and West of Greenwich, of one hour each, Nigeria falling into the zone with a standard of one hour fast on Greenwich Mean Time. Nigeria standard time is now 30 minutes in advance of Greenwich Mean Time ... according to the new proposal, standard time will be advanced another 30 minutes". It was further proposed that the firing of the time guns likewise be adjusted by 30 minutes to compensate.
Tim Parenti (2020-12-10):
The text of Ordinance 18 of 1919, published in Nigeria Gazette, Vol 6, No 52, shows that the change was assented to the following day and took effect "on the 1st day of September, 1919." Nigeria Gazette and Supplements 1919 Jan-Dec, Reference: 73266B-40, img 245-246 https://microform.digital/boa/collections/77/volumes/539/nigeria-lagos-1887-1919 Zone NAME STDOFF RULES FORMAT [UNTIL]
africa(Lines 1064 to 1144)