Understanding Leap Years

The video explains the necessity of leap day due to the Earth's revolution around the sun taking slightly more than 365 days. Without leap day, seasons would shift over time. To correct this, an extra day is added every four years. However, this still leaves a small discrepancy, which is adjusted by specific rules for century years. These adjustments ensure that the calendar remains accurate over millennia.

Why is a leap day necessary?

• To adjust for daylight saving time

• To align with the lunar calendar

• To correct the calendar drift due to Earth's revolution

• To celebrate an extra holiday

What would happen if we didn't add a leap day every four years?

• The calendar would remain accurate

• The seasons would shift significantly over time

• The months would have different lengths

• The year would become shorter

How many hours would the calendar be off by every 100 years without further adjustments?

• 12 hours

• 36 hours

• 18 hours

• 24 hours

Which century year was a leap year?

• 1900

• 1800

• 2000

• 1700

What is the rule for a century year to be a leap year?

• It must be divisible by 200

• It must be divisible by 400

• It must be divisible by 100

• It must be divisible by 500

How long will it take for the calendar to be off by one day with the current leap year system?

• 1,000 years

• 2,000 years

• 3,000 years

• 4,000 years

What is the main purpose of the leap year system?

• To synchronize with the lunar calendar

• To ensure the calendar remains aligned with the Earth's orbit

• To add an extra holiday every four years

• To adjust for time zone differences