## GEN 2 Tables and codes

### GEN 2.1 Measuring system, aircraft markings, holidays

#### 1. Units of measurement

1.1 The units of measurement used in Albania are in accordance with the International System of Units (SI) as specified in ICAO Annex 5, Chapter 3.

Measurement of | Units
Distance used in navigation, position reporting etc. - generally in excess of 2 or 3 nautical miles | Nautical miles and tenths
Relatively short distances such as those relating to aerodromes (e.g. runway lengths) | Metres
Altitudes, elevations and heights | Feet and Flight Levels
Horizontal speed including wind speed | Knots
Vertical speed | Feet per minute
Wind direction for landing and taking off | Degrees Magnetic
Wind direction except for landing and taking off | Degrees True
Visibility < 5000 metres (including RVR) | Metres
Visibility > 5000 metres | Kilometres
Distance from cloud | Metres
Depth of runway deposit | Centimetres or millimetres
Altimeter setting | Hectopascals
Temperature Degrees | Celsius (Centigrade)
Weight/mass | Metric tonnes or kilogrammes
Date/Time | Year, Month, Day, Hour and Minute, the day of 24 hours beginning at midnight Co-ordinated Universal Time

1.2 Where ICAO Annex 5 permits the use of non-SI alternative units these are shown in parentheses following the basic units.

#### 2. Temporal reference system

2.1 The Gregorian calendar and Coordinated Universal Time (UTC) are used as the temporal reference system.
2.2 Time periods published in AIS products are in Co-ordinated Universal Time (UTC) except where otherwise stated.
2.3 Daylight saving time is UTC plus 1 hour. The expression “summer period” indicates that part of the year in which “daylight saving time” is in force. The other part of the year is named the “winter period”. Times applicable during the “summer period” are given in brackets.
2.4 The “summer period” is introduced every year on the last Sunday in MAR at 01:00 UTC and ceases on the last Sunday in OCT at 01:00 UTC.

#### 3. Horizontal reference system

3.1 The World Geodetic System – 1984 (WGS-84) is used as the horizontal reference system. Geographical coordinates, indicating latitude and longitude, are expressed in terms of WGS-84 geodetic reference datum.
3.2 En-route and Terminal Charts are drafted on the Transverse Mercator Projection. The Lambert Conformal Conic Projection is used for drafting the Aeronautical Chart 1:500 000.
3.3 In those particular cases where geographical coordinates have been transformed into WGS-84 coordinates by mathematical means and whose accuracy of original field work does not meet the applicable requirements contained in the aeronautical data catalogue, they should be identified until the time when they can be compliant.
3.4 The identification of those coordinates that do not meet the accuracy requirements will be done with an asterisk (*) following the value concerned.

#### 4. Vertical reference system

4.1 Mean Sea Level (MSL) datum is used as the vertical reference system.
4.2 The Earth Gravitational Model - 1996 (EGM-96) is used as the global gravity model.
4.3 The identification of those elevations/geoid undulations that do not meet the accuracy requirements will be done with an asterisk (*) following the value concerned.

#### 5. Aircraft nationality and registration marks

The nationality mark for civil aircraft registered in Albania are the letters ZA. The nationality mark is followed by a hyphen and a registration mark consisting of 3 letters, e.g. ZA-ADE.

#### 6. Public holidays

The following dates are notified as public holidays.

Name | Date/Day
New Year’s Day | 1, 2 January
Summer Day | 14 March
Catholic Easter | Catholic Easter Sunday
Orthodox Easter | Orthodox Easter Sunday
Nevruz Day | 22 March
Labour Day | 1 May
End of Ramadan | According to Muslim Calendar
Feast of Sacrifice | According to Muslim Calendar
Saint Teresa Santification Day | 5 September
Albanian Language Alphabet Day | 22 November
Independence Day | 28 November
Liberation Day | 29 November
National Youth Day | 8 December
Christmas Day | 25 December

Note: Banks and public institutions are closed during Saturdays and Sundays, as well as on public holidays.