Time

Question 1

The name given to the path the sun tracks along a great circle as the year progresses

Answer 1

ECLIPTIC

Question 2

What is the ecliptic angle reference

Answer 2

23॰27’

Question 3

When the sun reaches the peaks of 23॰27’ North or South, this is known as what

Answer 3

1. North = SUMMER SOLTICE
2. South = WINTER SOLTICE

Question 4

The earth revolves in which direction when referenced from North looking down

Answer 4

ANTI CLOCKWISE

Question 5

An observers day starts when the sun transits which point

Answer 5

ANTI MERIDIAN

Question 6

How long is a Sideral Day

Answer 6

23h 56m 4.091s

Question 7

What is the name of the given reference;
23h 56m 4.091s

Answer 7

SIDERAL DAY

Question 8

An artificial unit of constant time based on the average of all the apparent days over one year is known as what

Answer 8

MEAN DAY

Question 9

How long is a mean day

Answer 9

24 hours

Question 10

Given the mean day is 24 hours, and the earth is referenced by Meridians of Longitude, the apparent rotational speed of the sun can be expressed as ____ per hour

Answer 10

15॰ per hour

24 hours in a mean day
360॰ around the earth
360 / 24 = 15

Question 11

Time is inherently related to (i) MERIDIANS or PARALLELS of (ii) LONGITUDE or LATITUDE

Answer 11

1. MERIDIANS
2. LONGITUDE

Question 12

____॰ Longitude = ____ hour

Answer 12

1. 15॰
2. 1 hour

Question 13

At any point during the rotation of the earth, the sun will always be overhead some part of the planet. This is known as what to the observer at the local mid-day refernece point

Answer 13

LOCAL MEAN TIME

Question 14

What does LMT, LST, and UTC refer to

Answer 14

1. LOCAL MEAN TIME
2. LOCAL STANDARD TIME
3. UNIVERSAL TIME COORDINATED

Question 15

What is the prime reference of time known as, and from which reference point

Answer 15

1. UTC
2. 0॰ Meridian (GMT)

Question 16

Countries to the EAST or WEST of UTC will have their times referenced before UTC

Answer 16

EAST of 0॰ MERIDIAN

Question 17

Countries to the WEST of UTC will be referenced BEFORE or AFTER UTC

Answer 17

AFTER UTC

Question 18

What is the International Date Line

Answer 18

Point on the earth where 1 day stops and another begins

Question 19

The International Date Line is referenced to which point on the Earth

Answer 19

ANTI MERIDIAN

Question 20

The International Date Line is altered to avoid what

Answer 20

POPULATED AREAS

Question 21

Calculate difference of LMT to UTC given the following

Time is 1100UTC.
Moscow Russia is located at N55॰45’ E037॰36’
What is the LMT at Moscow

Answer 21

13:30
(1:30pm)

Moscow is EAST of UTC. The sun would have reached Moscow Meridian before UTC from the reference point of Anit Meridian.
REMEMBER: 1 hour in time is eqivilant to 15॰ of Meridian
Given Moscow is 37॰ and 36 minutes EAST of UTC;
37.36 / 15॰ = 2.5
2.5 Hours EAST meaning time is ahead of UTC