uClinux 修改系统时区

uClinux系统时区设置文件是/etc/TZ，更改此文件可设定想要的系统时区，比如中国东八区应该设成CST-8。

 

附录：

1. TZ时区格式

TZ所使用的时区格式XXX-n里面，XXX是date出来的时区名称，而-n是指超前n小时，所以CST-8就是“时区名称叫CST，而时间比UTC标准时间早8个小时”，也就是中国所在的东八区。

MDT+6则是新墨西哥时间，比UTC时间晚6个小时。

 

2. 夏时制时区

时区以DT结尾的就使用了夏时制。每年四月到八月，使用夏时制时间会快一个小时。对程序来说，如果使用了夏时制时区要指定struct tm中的tm_isdst＝1。

 

3. 中国时区信息

China

District(s)	TZ zone name	Zone time	Time	DST rule	LMT	Remarks
Harbin	Asia/Harbin	8:00	CST	-	8:26:44
Zhongyuan	Asia/Shanghai	8:00	CST	-	8:05:52	Central plain Time
Long-shu	Asia/Chongqing	8:00	CST	-	7:06:20
Tibet	Asia/Urumqi	8:00	CST	-	5:50:20	Xinjiang; Urumchi
Kunlun	Asia/Kashgar	8:00	CST	-	5:03:56	Kashi, Kaxgar
Hong Kong	Asia/Hong_Kong	8:00	HKT	-	7:36:36	Xianggang
Taiwan	Asia/Taipei	8:00	CST	-	8:06:00	Taibei, T'ai-pei
Macau	Asia/Macau	8:00	CT	-	7:34:20	Macao, Aomen

 

4. 不同的时区表示

定义 时区 GMT时间定义
CUT0GDT 格林威治时间 CUT
GMT0BST 伦敦 都柏林 里斯本 爱丁堡 CUT
AZOREST1AZOREDT 亚速尔群岛 佛得角群岛 CUT -1
FALKST2FALKDT 福克兰群岛(西大西洋) CUT -2
GRNLNDST3GRNLNDDT 格陵兰 巴西利亚 纽芬兰 CUT -3
AST4ADT 大西洋时间（加拿大）南美洲西部 圣地亚哥 CUT -4
EST5EDT 东部时间（美加） 印第安纳（东部） CUT -5
CST6CDT 中部时间（美加） 墨西哥城 CUT -6
MST7MDT 山地时间（美加） 亚利桑那 CUT -7
PST8PDT 太平洋时间（美加） 蒂华纳 CUT -8
AST9ADT 阿拉斯加 CUT -9
HST10HDT 夏威夷 CUT -10
BST11BDT 中途岛 萨摩亚群岛 CUT -11
NZST-12NZDT 纽西兰 新西兰（太平洋南部岛国） CUT +12
MET-11METDT 太平洋中部 所罗门群岛 CUT +11
EET-10EETDT 堪培拉 墨尔本 悉尼 关岛 CUT +10
JST-9JSTDT 东京 CUT +9
KORST-9KORDT 汉城 大阪 扎幌 CUT +9
WAUST-8WAUDT 北京 上海 台湾 香港 新加坡 CUT +8
TAIST-8TAIDT 台湾（中国） CUT +8
THAIST-7THAIDT 曼谷 河内 雅加达 胡志明市 CUT +7
TASHST-6TASHDT 中亚 阿马提 达卡 CUT +6
PAKST-5PAKDT 伊斯兰堡 卡拉奇 CUT +5
WST-4WDT 高尔基 中亚 阿曼 CUT +4
MEST-3MEDT 土耳其 CUT +3
SAUST-3SAUDT 沙乌地阿拉伯 CUT +3
WET-2WET 芬兰 CUT +2
USAST-2USADT 南非 东欧 CUT +2
NFT-1DFT 挪威（北欧国家）罗马 CUT +1

 

Time Zone Table 

Countries	Current Time Zone Notation
Afghanistan	UCT-4:30
Albania	MET-1METDST
Algeria	UCT-1
American Samoa	UCT11
Andorra	MET-1METDST
Angola	UCT-1
Anguilla	UCT4
Antigua and Barbuda	UCT4
Argentina	SAT3
Armenia	UCT-4
Aruba	UCT4
Australia (Broken Hill and South Australia)	CST-9:30CDT
Australia (Lord Howe Island)	LHT-10:30LHDT
Australia (New South Wales, Capitol Territory, Victoria)	EST-10EDT
Australia (Northern Territory)	UCT-9:30
Australia (Queensland)	UCT-10
Australia (Tasmania)	TST-10TDT
Australia (Western)	UCT-8
Austria	MEZ-1MESZ
Azerbaijan	UCT-3
Bahamas	EST5EDT
Bahrain	UCT-3
Bangladesh	UCT-6
Barbados	UCT4
Belarus	EET-2EETDST
Belgium	MET-1METDST
Belize	UCT6
Benin	UCT-1
Bermuda	AST4ADT
Bhutan	UCT-6
Bolivia	UCT4
Bonaire	UCT4
Bosnia Herzogovina	MET-1METDST
Botswana	UCT-2
Brazil (East, including All Coast and Brasilia)	EBST3EBDT
Brazil (Fernando de Noronha)	NORO2
Brazil (Trinity of Acre)	ACRE5
Brazil (West)	WBST4WBDT
British Virgin Islands	UCT4
Brunei	UCT-8
Bulgaria	EET-2EETDST
Burkina Faso	UCT
Burma	UCT-6:30
Burundi	UCT-2
Cambodia	UCT-7
Cameroon	UCT-1
Canada (Atlantic)	AST4ADT
Canada (Central)	CST6CDT
Canada (Eastern)	EST5EDT
Canada (Mountain)	MST7MDT
Canada (Newfoundland)	NST3:30NDT
Canada (Pacific and Yukon)	PST8PDT
Cape Verde	UCT1
Cayman Islands	UCT5
Central African Republic	UCT-1
Chad	UCT-1
Chile	CST4CDT
Chile (Easter Island)	EIST6EIDT
China	CST-8
Christmas Islands	UCT-7
Cocos (Keeling) Islands	UCT-6:30
Colombia	UCT5
Congo	UCT-1
Cook Islands	UCT10
Costa Rica	UCT6
Cote d'Ivoire	UCT
Croatia	MET-1METDST
Cuba	UCT5
Curacao	UCT4
Cyprus	EET-2EETDST
Czech Republic	MET-1METDST
Denmark	MET-1METDST
Djibouti	UCT-3
Dominica	UCT4
The Dominican Republic	UCT4
Ecuador	UCT5
Ecuador (Galapagos Islands)	UCT6
Egypt	EST-2EDT
El Salvador	UCT6
Equatorial Guinea	UCT-1
Eritrea	UCT-3
Estonia	EET-2EETDST
Ethiopia	UCT-3
Faroe Islands	WET0WETDST
Fiji	UCT-12
Finland	EET-2EETDST
France	MET-1METDST
French Guiana	SAT3
French Polynesia	UCT10
Gabon	UCT-1
The Gambia	UCT
Georgia	EUT-4EUTDST
Germany	MEZ-1MESZ
Ghana	UCT
Gibraltar	MET-1METDST
Greece	EET-2EETDST
Greenland (Scorsbysund)	EUT1EUTDST
Greenland (Thule)	AST4ADT
Grenada	UCT4
Guadeloupe	UCT4
Guam	UCT-10
Guatemala	UCT6
Guinea Bissau	UCT
Guyana	UCT3
Haiti	EST5EDT
Hawaii	UCT10
Honduras	UCT6
Hong Kong	UCT-8
Hungary	MET-1METDST
Iceland	UCT
India	UCT-5:30
Indonesia (Central)	UCT-8
Indonesia (East)	UCT-9
Indonesia (West)	UCT-7
Iran	UCT-3:30
Iraq	IST-3IDT
Ireland	GMT0BST
Israel	IST-2IDT
Italy	MET-1METDST
Jamaica	UCT5
Japan	JST
Johnston Islands	UCT10
Jordan	JST-2JDT
Juan Fernandez Islands	UCT5
Kazakhstan	EUT-6EUTDST
Kenya	UCT-3
Kiribati	UCT-12
Kuwait	UCT-3
Kyrgyzstan	UCT-5
Laos	UCT-7
Latvia	EET-2EETDST
Lebanon	EUT-2EUTDST
Lesotho	UCT-2
Liberia	UCT
Libya	UCT-2
Liechtenstein	MET-1METDST
Lithuania	EET-2EETDST
Luxembourg	MET-1METDST
Macao	UCT-8
Macedonia	MET-1METDST
Madagascar	UCT-3
Malawi	UCT-2
Malaysia	MST-8
Maldives	UCT-5
Mali	UCT
Malta	MET-1METDST
Mariana Islands	UCT-10
Martinique	UCT4
Mauritania	UCT
Mauritius	UCT-4
Mayotte	UCT-3
Mexico	CST6CDT
Mexico (Baja N.)	PST8PDT
Mexico (Baja S.)	MST7MDT
Midway Islands	UCT11
Moldova	EET-2EETDST
Monaco	MET-1METDST
Mongolia	EUT-8EUTDST
Montenegro	MET-1METDST
Montserrat	UCT4
Morocco	UCT
Mozambique	UCT-2
Namibia	UCT-2
Nauru	UCT-12
Nepal	UCT-5:45
The Netherlands Antilles	UCT4
The Netherlands	MET-1METDST
New Caledonia	UCT-11
New Hebrides	UCT-11
New Zealand	NZST-12NZDT
New Zealand (Chatham Island)	CIST-12:45CIDT
Nicaragua	UCT6
Niger	UCT-1
Nigeria	UCT-1
Niue Islands	UCT11
Norfolk Island	UCT-11:30
North Korea	KST
Norway	MET-1METDST
Oman	UCT-4
Pakistan	UCT-5
Palau	UCT-9
Panama	UCT5
Papua New Guinea	UCT-10
Paraguay	UCT4
Peru	UCT5
Philippines	UCT-8
Pitcairn Island	UCT-9
Poland	MET-1METDST
Portugal	PWT0PST
Portugal (Azores)	EUT1EUTDST
Puerto Rico	UCT4
Qatar	UCT-3
Reunion	UCT-4
Romania	EET-2EETDST
Russia (Moscow)	MST-3MDT
Russian Fed. Zone 1 (Kaliningrad)	RFT-2RFTDST
Russian Fed. Zone 10 (Magadan)	RFT-11RFTDST
Russian Fed. Zone 11 (Petropavolovsk-Kamchatsky)	RFT-12RFTDST
Russian Fed. Zone 2 (St. Petersburg)	RFT-3RFTDST
Russian Fed. Zone 3 (Izhevsk)	RFT-4RFTDST
Russian Fed. Zone 4 (Ekaterinburg)	RFT-5RFTDST
Russian Fed. Zone 5 ((Novosibirsk)	RFT-6RFTDST
Russian Fed. Zone 6 (Krasnojarsk)	RFT-7RFTDST
Russian Fed. Zone 7 ((Irkutsk)	RFT-8RFTDST
Russian Fed. Zone 8 (Yakatsk)	RFT-9RFTDST
Russian Fed. Zone 9 (Vladivostok)	RFT-10RFTDST
Rwanda	UCT-2
Saint Pierre & Miquelon	NAST3NADT
San Marino	MET-1METDST
Sao Tome and Principe	UCT
Saudi Arabia	UCT-3
Senegal Sierra Leone	UCT
Serbia	MET-1METDST
The Seychelles	UCT-4
Singapore	UCT-8
Slovakia	MET-1METDST
Slovenia	MET-1METDST
Solomon Islands	UCT-11
Somalia	UCT-3
South Africa	SAST-2
South Georgia	UCT3
South Korea	KST
Spain	MET-1METDST
Spain (Canary Islands)	WET0WETDST
Sri Lanka	UCT-5:30
St. Helena	UCT
St. Kitts-Nevis	UCT4
St. Lucia	UCT4
St. Vincent and the Grenadines	UCT4
Sudan	UCT-2
Suriname	UCT3
Swaziland	UCT-2
Sweden	MET-1METDST
Switzerland	MEZ-1MESZ
Syria	SST-2SDT
Tahiti	UCT10
Taiwan	UCT-8
Tajikistan	UCT-5
Tanzania	UCT-3
Thailand	UCT-7
Togo	UCT
Tonga	UCT-13
Trinidad and Tobago	TTST4
Tunisia	UCT-1
Turkey	EET-2EETDST
Turkmenistan	UCT-5
Turks & Caicos Islands	EST5EDT
Tuvalu	UCT-12
Uganda	UCT-3
Ukraine	EET-2EETDST
Ukraine (Simferopol)	EUT-3EUTDST
United Arab Emirates	UAEST-4
United Kingdom	GMT0BST
Uruguay	SAT3
US Virgin Islands	UCT4
USA (Alaska)	NAST9NADT
USA (Aleutian Islands)	AST10ADT
USA (Arizona)	MST7
USA (Central)	CST6CDT
USA (Eastern)	EST5EDT
USA (Indiana)	EST5
USA (Mountain)	MST7MDT
USA (Pacific)	PST8PDT
Uzbekistan	UCT-5
Vanuatu	UCT-11
Vatican City	MET-1METDST
Venezuela	UCT4
Vietnam	UCT-7
Wake Islands	UCT-12
Wallis & Futana Islands	UCT-12
Western Samoa	UCT11
Yemen	UCT-3
Zaire (Kasai)	UCT-2
Zaire (Kinshasa)	UCT-1
Zambia	UCT-2
Zimbabwe	UCT-2