Time and the Earth Moon Sun Cycles

Question 1

How long is a sidereal day?

Answer 1

23h 56m 4s - measures the rotation of Earth relative to the stars rather than the sun.

Question 2

How long is a synodic day?

Answer 2

24hr

Question 3

What are the phases of the moon?

Answer 3

New - Day 1
Waxing Crescent 2-6
First quarter-day 7
Waxing gibbous - 8-13
full moon - 14
waning gibbous 15-20
third quarter - 21
waning crescent - 22 - 27.3

Question 4

What is the role of the Sun in determining the Apparent Solar Time?

Answer 4

Apparent Solar time is based on the apparent motion of the sun.

Question 5

If a Sundial reads 14:30 GMT on 15th July. What time will it be on an accurate clock? - 15th July is -6

Answer 5

14:30 + -6 = 14:36
EOT = AST - MST
MST = AST - EOT

Question 6

What is one sidereal month equivalent to?

Answer 6

27.3 days relative to the stars

Question 7

What is one synodic month equivalent to?

Answer 7

29.5 days relative to the sun

Question 8

What are the dates of the equinoxes and solstices?

Answer 8

Solstices - 21st June and 21st December

Equinoxes - 21st March and 21st September

Question 9

What does waxing mean?

Answer 9

Growing - getting bigger

Question 10

What does waning mean?

Answer 10

Getting smaller

Question 11

Label component X

Answer 11

Gnomon