GEN 2  TABLES AND CODES

GEN 2.1  MEASURING SYSTEM, AIRCRAFT MARKINGS, HOLIDAYS

2.1.1  UNITS OF MEASUREMENT

Measurement of

Units

Distances used in navigation, position reporting, etc.

Nautical miles / Kilometres

Relatively short distances such as those relating to aerodromes (e.g. runway lengths)

Meters

Altitudes, elevations and heights

Feet / Metres; always feet in relation to the aircraft in flight

Horizontal speed

Kilometres per hour / Knots

Wind speed

Knots

Height of cloud base

Feet

Vertical speed

Feet per minute

Wind direction

Degrees True

Visibility including runway visual range

Kilometres or meters

Vertical visibility

Feet

Altimeter setting

Hectopascal

Temperature

Degrees Celsius (Centigrade)

Weight

Metric tonnes or kilogrammes

Time

Hours and minutes, beginning at midnight UTC.

2.1.2  TIME REFERENCE SYSTEM

2.1.2.1 Coordinated Universal Time (UTC) is used in air traffic and communication services and in publications issued by Aeronautical Information Service.

  1. The time is reported in hours and minutes of 24 hour day with the beginning at midnight.

    Example: The time 12 hours 15 minutes 49 seconds is reported 1215.

  2. Generally midnight is designated as 2400 for the end of the day and 0000 for the beginning of the day.

2.1.2.2 The exact time, reported to the pilot on request or before aircraft taxing to take off, is given to the nearest minute.

Example: time 12:15:14 is reported 1215

2.1.2.3 In the Czech Republic there is used as local time:

  1. “Central European Time” (i.e. UTC + 1 HR) or

  2. “Central European Summer Time” (i.e. UTC + 2 HR).

2.1.2.4 The beginning and the end of Central European Summer Time is announced by AIC series A.
2.1.2.5 Daylight saving time in the Czech Republic is UTC + 2 hours; The “summer period” will be introduced every year on the last Sunday in MAR at 0100 UTC and it will cease on the last Sunday in OCT at 0100 UTC.
2.1.2.6 In the AIP of the C.R. all hours of operation stated in brackets are applicable during Central European Summer Time.

2.1.3  HORIZONTAL REFERENCE SYSTEM

2.1.3.1 All published geographical coordinates indicating latitude and longitude are expressed in terms of the WGS-84 (World Geodetic System - 1984) geodetic reference datum.

2.1.4  VERTICAL REFERENCE SYSTEM

2.1.4.1  Name/designation of the reference system
2.1.4.1.1  The Baltic Vertical Datum - After Adjustment is used in Czech Republic as a vertical reference system, which states the relation of the height along the vertical (normal Molodensky’s height) to the CR 2000 quasigeoid.
2.1.4.2  Description of the model used

The CR 2000 quasigeoid model is a gravimetric model rectified using the GPS/levelling in the ETRF2000 framework (European Terrestrial Reference Frame 2000) and is described by discrete values of remoteness (height anomalies) from the WGS-84 (GRS80) reference elipsoid.

The initial height point is the gauge zero mark in Kronstadt. Bpv deviations from EGM-96 throughout the Czech Republic do not exceed 0,5 m in 99% cases.

Management of the basic geographic data base of the Czech Republic is performed by:

Post:

Zeměměřičský úřad (Land Survey Office)
Pod sídlištěm 1800/9
182 11 Praha 8

Telephone:  +420 284 041 111

Telefax:  +420 284 041 416

E-mail:   zu.praha@cuzk.cz

URL:   http://www.cuzk.cz/zu_praha

2.1.5  AIRCRAFT NATIONALITY AND REGISTRATION MARKS

  1. The nationality mark for civil aircraft entered on the Register of the C.R. consists of the letters “OK”. The nationality mark is followed by a hyphen and a registration mark.

  2. The registration mark for a power driven aircraft is a combination of three letters.

  3. The registration mark for non-power-driven aircraft is a combination of four figures.

  4. The registration mark for ultralight aircraft entered on the Register of the C.R. is a combination of four letters.

  5. The registration mark for ultralight aircraft entered on the register of Aeronautical Amateur Association is a combination of three letters and two figures.

2.1.6  PUBLIC HOLIDAYS

Jméno Datum/DenNameDate/Day
Nový rok1. ledenNew Years Day1 January
Velký pátekpátek před Velikonoční nedělíGood FridayFriday before Easter Sunday
Velikonoční pondělípondělí po Velikonoční neděliEaster MondayMonday after Easter Sunday
Svátek práce1. květnaLabour Day1 May
státní svátek 8. květenBank holiday8 May
státní svátek5. červenecBank holiday5 July
státní svátek6. červenecBank holiday6 July
státní svátek28. záříBank holiday28 September
státní svátek28. říjenBank holiday28 October
státní svátek17. listopadBank holiday17 November
Štědrý den24. prosinecChristmas Eve24 December
1. svátek vánoční25. prosinecChristmas Day25 December
2. svátek vánoční26. prosinecBoxing Day26 December

Good Fridays and Easter Mondays for years 2023 - 2030

Year

20232024202520262027202820292030

Good Friday

7 APR29 MAR18 APR3 APR26 MAR14 APR30 MAR19 APR

Easter Monday

10 APR1 APR21 APR6 APR29 MAR17 APR2 APR22 APR