GNAV 02

[GNAV-PT02 #1] How is the mean solar day best defined? A) 24 hours, being the time it takes a fictitious Sun, traveling at constant speed along the ecliptic, to make two transits overhead the observer’s local meridian of longitude. B) 24 hours, being the time it takes the actual Sun, traveling at varying speed along the celestial Equator, to make two transits overhead the observer’s local meridian of longitude. C) 24 hours, being the time it takes a fictitious Sun, traveling at uniform speed along the celestial Equator, to make two transits overhead the observer’s local meridian of longitude. D) Of variable length, being the time it takes the actual Sun, traveling at varying speed along the ecliptic, to make two transits overhead the observer’s local meridian of longitude.

[GNAV-PT02 #2] Local Mean Time (LMT) at the Greenwich Meridian is equal to...? A) Atomic Time. B) Local Mean Time at any other meridian within +/-7.5° of the Greenwich Meridian. C) Standard Time at any location. D) Greenwich Mean Time (GMT).

[GNAV-PT02 #3] The local mean time at Orlando International Airport, Florida, USA (N28°25’ W081°20’) is 14.00 LMT. What is the local mean time at Sheremetyevo International Airport, Moscow, Russia (N56°00’ E037°40’)? A) 22.00 ST B) 06.04 LMT C) 21.56 LMT D) 22.00 LMT

[GNAV-PT02 #4] The local mean time at Suvanarbhumi International Airport, Bangkok, Thailand (N13°40’ E100°45’ ) is 21.30 LMT. What is the local mean time at Ministro Pistarini International Airport, Buenos Aires, Argentina (S34°50′ W58°30’)? A) 10.53 LMT B) 08.30 ST C) 09.30 LMT D) 08.07 LMT

[GNAV-PT02 #5] The local mean time at The Royal Observatory, Greenwich, London, UK (N51°29’ E000°00’ ) is 13.40 LMT. What is UTC at Sydney Kingsford Airport, New South Wales, Australia (S33°57′ E151°00′)? A) 13.40 LMT B) 23.44 UTC C) 13.40 UTC D) 23.44 LMT

[GNAV-PT02 #6] In which document will you be most likely to find Standard Time conversion tables? A) AIRAC B) AIP C) AIS D) Air Almanac

[GNAV-PT02 #7] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. The standard time at Dubai International Airport, Dubai, UAE (N25°15′ E055°20′) is 17.35 ST on 15th March 2017. What is the ST at Ninoy Acquino International Airport, Manilla, Philippines (N14°30′ E121°00’)? A) 17.58 ST on 15th March 2017 B) 13.35 ST on 15th March 2017 C) 21.35 ST on 15th March 2017 D) 17.35 ST on 15th March 2017

[GNAV-PT02 #8] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. An aircraft departs Perth Airport, Western Australia, Australia (S31°56′ E116°00′) at 21.50 ST on 18th September 2017 for a 4 hr 35 min flight to Canberra Airport, Australian Capital Territory, Australia (S35°18′ E149°15’). What is the ST of arrival at Canberra? A) 04:38 ST on 19th September 2017 B) 04:25 ST on 18th September 2017 C) 00:25 ST on 19th September 2017 D) 04:25 ST on 19th September 2017

[GNAV-PT02 #9] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. An aircraft departs Wellington International Airport, New Zealand (S41°20’ E174°45′) at 22.50 ST on 27th July 2017 for a 11 hr 25 min flight to Daniel K Onouye International Airport, Honolulu, Hawaii, USA (N21°19′ W157°55’). What is the ST of arrival at Honolulu? A) 12.15 ST on 27th July 2017 B) 12.04 ST on 27th July 2017 C) 12.15 ST on 26th July 2017 D) 12.15 ST on 28th July 2017

[GNAV-PT02 #10] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. What is the time of sunrise at Dubai International Airport, Dubai, UAE (N25°15′ E055°20′) on 20th April 2017? A) 05.33 UTC B) 05.33 LMT C) 01.52 LMT D) 04.52 ST

[GNAV-PT02 #11] At which of the following does evening civil twilight end? A) Centre disk of the ascending Sun 6° below the horizon to the east. B) Centre disk of the descending Sun 6° below the horizon to the west. C) Centre disk of the descending Sun 12° below the horizon to the east. D) Upper limb of the descending Sun 6° below the horizon to the west.

[GNAV-PT02 #12] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. What is the time of sunset at Keflavik International Airport, Iceland (N64°00′ W022°30′) on 26th July 2017? A) 22.51 ST B) 22.51 LMT C) 19.51 ST D) 21.21 ST

[GNAV-PT02 #13] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. What is the duration of morning civil twilight at McClarren International Airport, Nevada, USA (N36°00′ 115°15’) on 20th May 2017?

[GNAV-PT02 #14] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. An aircraft departs Incheon International Airport, Seoul, South Korea (N37°30’ E126°30′) at sunset on 16th December 2017 for a non-stop 13 hr 55 min flight to JFK Airport, Queens, New York, USA (N40°38′ W073°45’)? What is the ST and date of landing at JFK? A) 16.38 ST on 16th December 2017 B) 17.17 ST on 16th December 2017 C) 17.12 ST on 17th December 2017 D) 17.12 ST on 16th December 2017

[GNAV-PT02 #15] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. An aircraft is departing Ataturk International Airport, Istanbul, Turkey (N40°58′ E028°45′) for Tokyo International Airport, Tokyo, Japan (N35°33′ E139°45’) via Beijing Capital International Airport, Beijing, China (N40°04′ E116°30′). Time off blocks at Istanbul is 22.20 ST on 22nd June 2017. Taxi time at Istanbul is 20 min and the flight time to Beijing is 9 hr 15 min. Taxi time to and from the gate at Beijing is 45 min and the transfer time at the gate at Beijing is 6 hr 50 min. Flight time from Beijing to Tokyo is 3 hr 10 min and taxi time at Tokyo is 25 min. What is the ST and date of arrival at the gate at Tokyo? A) 08.05 ST on 24th June 2017 B) 02.29 ST on 24th June 2017 C) 04.05 ST on 24th June 2017 D) 01.05 ST on 24th June 2017

[GNAV-PT02 #16] At which of the following does the duration of daylight change at the slowest rate? A) Aphelion. B) Summer Solstice. C) Spring Equinox. D) Perihelion.

[GNAV-PT02 #17] At which of the following does the duration of daylight change at the highest rate? A) Perihelion. B) Winter Solstice. C) Summer Solstice. D) Spring Equinox.

[GNAV-PT02 #18] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. An aircraft departs Cairo International Airport, Cairo, Egypt (N30°05′E031°15′) at 12.15 ST on 11th February 2017 for a non-stop, direct flight to King Shaka International Airport, Durban, South Africa (S29°40′ E031°15′E). The average groundspeed of the flight is 890 km/hr. What is the ST and date of landing at Durban? A) 19.43 ST on 11th February 2017 B) 17.12 ST on 11th February 2017 C) 20.17 ST on 11th February 2017 D) 16.38 ST on 11th February 2017

[GNAV-PT02 #19] Refer to Chapter 9.4.2 to download a copy of The Air Almanac. An aircraft departs Toulouse International Airport, France (43°30′ E001°22′) at 18.30 ST on 25th July 2017 for a non-stop flight, along a constant track, to Toronto, Ontario, Canada (N43°30′ W079°38′). The average groundspeed of the flight is 508 kt. How long before or after sunset will the flight land at Toronto? A) 24 min before sunset. B) At sunset. C) 6 min after sunset. D) 2 hr 23 min after sunset.

[GNAV-PT02 #20] _________ and _________ are often used interchangeably within this syllabus. A) GMT; UTC B) DST; ST C) LMT; UTC D) GMT; LMT

[GNAV-PT02 #21] Changes in LMT are calculated: In hours by dividing the change of longitude by _________.In minutes by multiplying the change of longitude by _________. A) 15; 10 B) 60; 4 C) 60; 10 D) 15; 4

[GNAV-PT02 #22] Daylight Saving Time (DST) is an adjustment to ST, usually of one hour duration and used in most countries, but with exceptions, both in duration and location. Clocks go:_________ in Spring._________ in Autumn. A) forwards; forwards. B) backwards; forwards. C) forwards; backwards. D) backwards; backwards.

[GNAV-PT02 #23] Date changes, whilst travelling across the midnight boundary:East = date goes _________.West = date goes _________. A) forwards; backwards. B) forwards; forwards. C) backwards; backwards. D) backwards; forwards.

[GNAV-PT02 #24] Date changes, whilst travelling across the International Date Line (IDL):East = date goes _________.West = date goes _________. A) forwards; forwards. B) backwards; forwards. C) backwards; backwards. D) forwards; backwards.

[GNAV-PT02 #25] A distinct point at the start of a day is:Morning Civil Twilight - Centre disk of ascending Sun is _________ the horizon. A) 5° above B) 6° below C) 6° above D) 5° below

[GNAV-PT02 #26] A distinct point at the start of a day is:Sunrise - Upper limb of Sun ascends above the _________ in the _________. A) horizon; East B) horizon; West C) Equator; East D) Equator; West

[GNAV-PT02 #27] A distinct point at the end of a day is:Sunset - Upper limb of Sun descends below the _________ in the _________. A) horizon; East B) Equator; East C) horizon; West D) Equator; West

[GNAV-PT02 #28] A distinct point at the end of a day is:Evening Civil Twilight - Centre disk of descending Sun is _________ horizon. A) 5° below B) 6° below C) 6° above D) 5° above

[GNAV-PT02 #29] The duration of daylight changes at the _________ rate at the Spring and Autumn Equinoxes and at the _________ rate at the Summer and Winter Solstices. A) highest; slowest B) lowest; slowest C) highest; fastest D) lowest; fastest

[GNAV-PT02 #30] An aircraft is flying from position A (26°35'25" N, 075°15'49" E) to position B (18°24'15" N, 080°10'32" E). What is the difference in latitude between the two positions?

[GNAV-PT02 #31] Maintaining a ground speed of 180 kt, an aircraft leaves position A 30°S, 010°W and flies the rhumb line tracks listed below. What are the coordinates of point E? A to B: 090° for 25 minutes B to C: 180° for 32 minutes C to D: 270° for 28 minutes D to E: 360° for 24 minutes

[GNAV-PT02 #32] The axis of the earth is inclined towards the plane of the ecliptic. As a result, what ls correct concerning the temperature in Egypt (25°N), compared South Africa (25°S)?

[GNAV-PT02 #33] Given the following information from an Air Almanac, what is the Standard Time (ST) and date in country A, if in country B, it is 15:00 ST 15th July? Standard time in country A is UTC +4 hours. Standard time in country B is UTC -7 hours.

[GNAV-PT02 #34] Given the following information from an Air Almanac, what is the daylight saving time and date in country B if the time and date in country A ls 01:50 standard Time (ST) 20th June? ST in country A ls UTC +13 hours. ST in country B is UTC -11 hours. Daylight saving times (ST +1 hour) is kept in country B from March to October.

[GNAV-PT02 #35] Given: Estimated Time of Departure A 15° 15.0'N, 072° 06.0'W on 12 March is 01:00 ST ST= UTC -5hr Estimated Time of Arrival B 55° 18.0'N, 005° 45.0'E 16:15 ST on the same date ST= UTC +1 hr According to the Air Almanac tables sunset at B takes place at 18:20. Calculate the flight time from A to B and the time between arrival and sunset at B.

[GNAV-PT02 #36] Determine the Standard Time (ST) and date of arrival in Chile, given the following Information: Route: New Zealand to Chile, crossing the international date line on an easterly course Departure time and date: 03:00 UTC, 19th November Flight time: 12 hours 30 minutes New Zealand ST: UTC + 12 hours Chile ST: UTC - 4 hours

[GNAV-PT02 #37] Calculate the ETA at the destination, given: An aircraft departing from the western hemisphere, flying along the equator to the eastern hemisphere, crossing the date line on a westerly heading. The difference between the location and the destination is 15° of longitude. Date and time of departure ls 12:00 LMT on the 14th of August. Aircraft travels at an average ground speed of 300 kt.

[GNAV-PT02 #38] An aircraft is flying from Position A (53°N, 10°35'W) to Position B (53°N, 51°45'E). Its average ground speed is equal to 375 kt. The time difference to UTC is 1 hour for Position A and 4 hours for Position B. Assuming the aircraft arrives at Position B on August 5th, 15:00 ST, what is its time of departure from Position A?

[GNAV-PT02 #39] The time difference in Local Mean Time between sunset at positions A (50°N, 120°E) and B (50°S, 120°E) on the 21st of November is: