2.1.1 UNITS OF MEASUREMENT
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The table of units of measurement shown below will be used by aeronautical stations within Taipei FIR for air and ground operations.
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度量衡
For measurement of
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單位
Units used
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航用距離，位置報告等，一般適用於超過2浬之距離
Distance used in navigation, position reporting, etc. ─ generally in excess of 2 nautical miles.
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浬
Nautical miles
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相對短距離(如跑道長度之於機場)
Relatively short distances such as those relating to aerodromes (e.g. runway lengths)
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公尺
Meters
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高度，標高
Altitudes, elevations and heights
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呎
Feet
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水平速度包括風速
Horizontal speed including wind speed
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浬每小時
Knots
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垂直速度
Vertical speed
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呎每分鐘
Feet per minute
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航空器起降風向
Wind direction for landing and taking off
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度(磁方位)
Degrees magnetic
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風向
Wind direction except for landing and taking off
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度(真方位)
Degrees true
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能見度包括跑道視程
Visibility including runway visual range
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公里或公尺
Kilometers or meters
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高度表撥定值
Altimeter setting
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百帕
Hectopascal
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溫度
Temperature
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攝氏
Degrees Celsius (Centigrade)
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重量
Weight
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公噸或公斤
Metric tons or kilograms
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時間
Time
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時與分
24小時制，1日自世界標準時間(UTC)午夜開始
Hours and minutes, the day of 24 hours beginning at midnight UTC.
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2.1.2 TEMPORAL REFERENCE SYSTEM
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Co-ordinated Universal Time (UTC) and the Gregorian calendar are used by air navigation services and in publications issued by the Aeronautical Information Service. Reporting of time is expressed to the nearest minutes, e.g. 12:40:35 is reported as 1241. Local time is 8 hours ahead of UTC. Times checks to aircraft are accurate to within 30 seconds.
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2.1.3 HORIZONTAL REFERENCE SYSTEM
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2.1.3.1 Name/designation of system
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All published geographical coordinates indicating latitude and longitude are expressed in terms of the World Geodetic System - 1984 (WGS-84) geodetic reference datum.
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二度分帶橫麥卡托投影
Two Degree Zone Transverse Mercator
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中央子午線尺度比 / Scale of Central Meridian: 0.9999
橫座標偏移量 / Abscissa shifts: 250,000 M West
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地區
Area
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中央子午線
Central Meridian
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臺灣、琉球嶼、綠島、蘭嶼及龜山島
Taiwan, Liouciouyu, Ludao, Lanyu and Gueishan island
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121E |
澎湖、金門及馬祖
Penghu, Kinmen and Matsu
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119E |
東沙
Dongsha
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117E |
南沙
Nansha
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115E |
世界橫麥卡托投影
Universal Transverse Mercator
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中央子午線尺度比 / Scale of Central Meridian: 0.9996
橫座標偏移量 / Abscissa shifts: 500,000 M West
中央子午線 / Central Meridian: 123E
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Ellipsoid is expressed in terms of the World Geodetic System - 1984 (WGS-84) ellipsoid.
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The World Geodetic System - 1984 (WGS-84) is used.
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2.1.3.5 Area of application
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The area of application for the published geographical coordinates coincides with the area of responsibility of the Aeronautical Information Service, i.e. the entire territory of Republic of China as well as the airspace over the high seas encompassed by Taipei FIR in accordance with the regional air navigation agreement.
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2.1.3.6 Use of an asterisk to identify published geographical coordinates
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An Asterisk ( * ) will be used to identify those published geographical coordinates which have been transformed into WGS-84 coordinates but whose accuracy of original field work does not meet the accuracy requirements in Annex 11, Chapter 2 and Annex 14, Volumes I and II, Chapter 2.
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2.1.4 VERTICAL REFERENCE SYSTEM
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2.1.4.1 Name/designation of system
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The vertical reference system corresponds to mean sea level (MSL).
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The geoid model used is the Earth Gravitational Model 1996 - (EGM-96).
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2.1.5 AIRCRAFT NATIONALITY AND REGISTRATION MARKS
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The nationality mark for aircraft registered in the Republic of China is the letter B, followed by a hyphen and a registration mark consisting of 3 to 5 Arabic numbers, e.g., B-158, B-1822, B-3001, B-11101.
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2.1.6 PUBLIC HOLIDAYS (2025)
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中華民國開國紀念日
Republic of China Memorial Day
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01 January
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春節
Lunar New Year's Vacation
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25 January - 02 February
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和平紀念日
Peace Memorial Day
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28 February - 02 March
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兒童節與民族掃墓節
Children's Day and Tomb Sweeping Day
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03 April - 06 April
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端午節
Dragon Boat Festival
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30 May - 01 June
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中秋節
Moon Festival
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04 October - 06 October
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國慶日
The National Day
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10 October - 12 October
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