Chapter 7.4 - Exam Review

Question 1

Define Coordinated Universal Time and its abbreviation (2)?

Answer 1

• UTC.

- A time based on the position of the mean sun relative to Prime/Greenwich meridian.

Question 2

Define Local Mean Time and its abbreviation (2)?

Answer 2

• LMT.

- A time measured using the mean’s sun position relative to the local meridian.

Question 3

Define Standard Times used in Australia and its abbreviation (3)?

Answer 3

• EST = Eastern Standard Time, a time used for eastern states in Australia based on the relative position of 150°E meridian.
• CST = Central Standard Time, a time used for central Australia based on the relative position of 142°30’E meridian.
• WST = Western Standard Time, a time used for western states in Australia based on the relative position of 120°E meridian.

Question 4

Define Standard Summer Times used in Australia and its abbreviation (2)?

Answer 4

• ESST = Eastern Standard Summer Time based on 165°E meridian, 1 hour later than EST.
• CSST = Central Standard Summer Time based on 157°30’E meridian, 1 hour later than EST.
• WSST = Western Standard Summer Time based on 135°E meridian, 1 hour later than WST.

Question 5

Convert 230600 UTC to LMT at 120°E?

Answer 5

231400 LMT (230600 UTC + 0800 h).

Question 6

Convert 122300 UTC to LMT at 150°E?

Answer 6

130900 LMT (122300 + 1000 h).

Question 7

Convert 05311800 UTC to LMT at 135°E?

Answer 7

06010300 LMT (05311800 + 0900 h).

Question 8

Convert 01021900 UTC to LMT at 153°35’E?

Answer 8

01030514 LMT (01021900 + 1014 h).

Question 9

Convert 10062355 UTC to LMT at 140°23’E?

Answer 9

10070917 LMT (10062355 + 0922 h).

Question 10

Convert 150624 LMT at 125°46’E to UTC?

Answer 10

142201 UTC (150624 - 0823 h).

Question 11

Convert 151806 LMT at 153°23’E?

Answer 11

150752 UTC (151806 - 1014 h).

Question 12

Convert 201750 LMT at 147°28’E?

Answer 12

200800 UTC (201750 - 0950 h).

Question 13

Convert 152330 LMT at 118°53’E?

Answer 13

151534 UTC (152330 - 0756 h).

Question 14

Convert 01050630 LMT at 151°27’E?

Answer 14

01042024 UTC (01050630 - 1006 h).

Question 15

Should Standard Time be used for flights involving a change of Longitude outside the Standard Time Zone?

Answer 15

No (because common meridian must be used for any change in Longitude).

Question 16

Complete 10081753 UTC at 144°E to EST and CST (2)?

Answer 16

• 10090353 EST (10081753 + 1000 h).

- 10090323 CST (10081753 + 1000 h).

Question 17

Complete 11210713 UTC at 128°E to CST and WST (2)?

Answer 17

• 11211643 CST (11210713 + 0930 h).

- 11211513 WST (11210713 + 0800 h).

Question 18

Complete 01051940 UTC at 151°E to EST and ESST (2)?

Answer 18

• 01060540 EST (01051940 + 1000 h).

- 01060640 ESST (01051940 + 1100 h).

Question 19

Complete 05151200 UTC at 126°E to CST and CSST (2)?

Answer 19

• 05152130 CST (05151200 + 0930 h).

- 05152230 CSST (05151200 + 1030 h).

Question 20

Complete 06302000 UTC at 118°E to WST and WSST (2)?

Answer 20

• 07010400 WST (06302000 + 0800 h).

- 07010500 WSST (06302000 + 0900 h).

Question 21

Complete 05101758 LMT at 116°41’E to UTC and WST (2)?

Answer 21

• 05101011 UTC (05101758 - 0747 h).

- 05101811 WST (05101011 + 0800 h).

Question 22

Complete 04221910 LMT at 135°00’E to UTC and CST (2)?

Answer 22

• 04221010 UTC (04221910 - 0900 h).

- 04221940 CST (04221010 + 0930 h).

Question 23

Complete 11150520 LMT at 149°33’E to UTC and EST (2)?

Answer 23

• 11141922 UTC (11150520 - 0958 h).

- 11150522 EST (11141922 + 1000 h).

Question 24

Complete 06060613 LMT at 130°56’E to UTC and CSST (2)?

Answer 24

• 06052129 UTC (06060613 - 0844 h).

- 06060759 CSST (06052129 + 1030 h).

Question 25

Complete 01010420 LMT at 120°10’E to UTC and WSST (2)?

Answer 25

• 12312019 UTC (01010420 - 0801 h).

- 01010519 WSST (12312019 + 0900 h).

Question 26

Complete 12311830 LMT at 153°26’E to UTC and ESST (2)?

Answer 26

• 12310816 UTC (12311830 - 1014 h).

- 12311916 ESST (12310816 + 1100 h).

Question 27

List three factors which may cause daylight to end earlier than predicted by the daylight graphs?

Answer 27

• Clouds in the West.
• High Terrain in the West.
• Reduced Visibility (particularly in the West).