Metonic Cycle and Lunar Phenomena

The video, presented by Anthony Murphy of Mythical Ireland, explores the Matonic Cycle, a 19-year lunar cycle that aligns the lunar and solar calendars. Using the example of the winter solstice in 2010, the video explains how the full moon's position changes over time. It discusses the synodic periods of the moon and how ancient Neolithic observers might have tracked these cycles. The video predicts the next occurrence of a full moon on the winter solstice in 2029, demonstrating the Matonic Cycle's application. The cycle's historical significance and its study in the Boyne Valley are also highlighted.

What is the main focus of the video by Anthony Murphy?

• The Metonic cycle and its relation to the winter solstice

• The history of Ireland

• The mythology of Orion

• The geography of the Milky Way

How many days short is a lunar year compared to a solar year?

• 13 days

• 10 days

• 11 days

• 12 days

What is the Metonic cycle named after?

• An Egyptian astronomer

• A Roman philosopher

• A Chinese astrologer

• A Greek astronomer and mathematician

What is the significance of the calendar Stone curb 52 at Mouth?

• It provides evidence of the Metonic cycle study

• It is a record of ancient myths

• It marks the beginning of the solar year

• It is a map of the Milky Way

How often does the Metonic cycle repeat?

• Every 10 years

• Every 15 years

• Every 19 years

• Every 25 years

In which year will the next full moon occur on the winter solstice after 2010?

• 2025

• 2029

• 2035

• 2040

How many leap full moons are added during the 19-year Metonic cycle?

• 8 times

• 7 times

• 6 times

• 5 times

What is the illumination percentage of the moon on the winter solstice in 2024?

• 63.4%

• 67.3%

• 65.2%

• 70.5%

What is the synodic lunar month duration in days?

• 31.5 days

• 28.5 days

• 29.5 days

• 30.5 days

What is the difference in days between 19 solar years and 235 synodic lunar months?

• 0.22 days

• 0.12 days

• 0.42 days

• 0.32 days