Chapter 7.4 - Time and Time Systems

Question 1

List all Date/Time systems used in Aviation?

Answer 1

• 10 digit.
• 8 digit.
• 6 digit.
• 4 digit.

Question 2

What calculation do you use when adding Time that exceeds 60 minutes (2)?

Answer 2

• Add the numbers together.

- +1 hour and -60 from the minutes figure.

Question 3

What calculation do you use when adding Time that exceeds 24 hours (2)?

Answer 3

• Add the numbers together.

- +1 day and -24 from the hour figure.

Question 4

What calculation do you use when subtracting Time in minutes that is higher than first figure (2)?

Answer 4

• -1 hour and +60 minutes to first figure.

- Subtract the second figure from step one.

Question 5

What calculation do you use when subtracting Time in hours that is higher than first figure (3)?

Answer 5

• -1 hour and +60 minutes to first figure.
• -1 day and +24 hours to step one.
• Subtract second figure from step two.

Question 6

360° in Longitude is equal to how much in mean time?

Answer 6

24 hours.

Question 7

15° in Longitude is equal to how much in mean time?

Answer 7

1 hour.

Question 8

1° in Longitude is equal to how much in mean time?

Answer 8

4 minutes.

Question 9

15’ in Longitude is equal to how much in mean time?

Answer 9

1 minute.

Question 10

1’ in Longitude is equal to how much in mean time?

Answer 10

4 seconds.

Question 11

What does LMT stand for?

Answer 11

Local Mean Time.

Question 12

What does UTC stand for?

Answer 12

Coordinated Universal Time.

Question 13

For LMT, when Longitude is East, what happens to UTC?

Answer 13

Decreases.

Question 14

For LMT, when Longitude is West, what happens to UTC?

Answer 14

Increases.

Question 15

What does ZT stand for?

Answer 15

Zone Time.

Question 16

What does SM and ST stand for?

Answer 16

• Standard Meridian.

- Standard Time.

Question 17

What does EST stand for and its meridian (2)?

Answer 17

• Eastern Standard Time.

- LMT = 150°E.

Question 18

What does CST stand for and its meridian (2)?

Answer 18

• Central Standard Time.

- LMT = 142°30’E.

Question 19

What does WST stand for and its meridian (2)?

Answer 19

• Western Standard Time.

- LMT = 120°E.

Question 20

How many hours difference between UTC and EST?

Answer 20

+1000 h.

Question 21

How many hours difference between UTC and CST?

Answer 21

+0930 h.

Question 22

How many hours difference between UTC and WST?

Answer 22

+0800 h.

Question 23

Summer Time between (October to March) moves the base meridian by how many degrees and to which direction?

Answer 23

• 15°.

- East.

Question 24

How many hours are added to the correction between UTC and Australia’s time zones during Summer Time?

Answer 24

+1 h.

Question 25

What does ESST, CSST and WSST stand for (3)?

Answer 25

- Eastern Standard Summer Time. - Central Standard Summer Time. - Western Standard Summer Time.

Question 26

What two factors affect the amount of Daylight?

Answer 26

- Date/Season. | - Latitude.

Question 27

What two factors affect the time of sunrise and sunset?

Answer 27

- Date/Season. | - Latitude.

Question 28

True or False. Longitude can also affect sunrise and sunset?

Answer 28

True.

Question 29

What does BoD stand for?

Answer 29

Beginning of Daylight.

Question 30

What does EoD stand for?

Answer 30

End of Daylight.

Question 31

What is the name given to the period between sunrise/sunset to the beginning/end of daylight and their abbreviations?

Answer 31

- Morning Civil Twilight (MCT). | - Evening Civil Twilight (ECT).

Question 32

What is the degree below the observer during MCT and ECT?

Answer 32

6°.

Question 33

It is a VFR requirement to arrive at a destination at least ‘x’ minutes before EoD. What is x?

Answer 33

10 minutes.

Question 34

The date (by month and day) is plotted at the top and bottom of the graph. Each small square represents what time length?

Answer 34

5 days.

Question 35

The Daylight is plotted either side of the graph. Each small square represents what time length?

Answer 35

5 minutes.

Question 36

Name three other factors which can affect Daylight?

Answer 36

- Clouds. - Visibility Restriction. - Local Terrain