Видео ютуба по тегу Bissextile Year

Leap years and why we need them - BBC News
Leap years and why we need them - BBC News
What is a Leap Year?
What is a Leap Year?
The Six Leap Year Myth: The Truth Behind the Extra Day!
The Six Leap Year Myth: The Truth Behind the Extra Day!
How leap year works
How leap year works
Why Do We Have LEAP YEARS? | What Is A LEAP YEAR? | The Dr Binocs Show | Peekaboo Kidz
Why Do We Have LEAP YEARS? | What Is A LEAP YEAR? | The Dr Binocs Show | Peekaboo Kidz
Leap Years: we can do better
Leap Years: we can do better
Re: Leap Years, 2012 & The Mayan Calendar
Re: Leap Years, 2012 & The Mayan Calendar
Why do we have leap years?
Why do we have leap years?
The Leap Year as Explained by Neil deGrasse Tyson | StarTalk
The Leap Year as Explained by Neil deGrasse Tyson | StarTalk
Leap Year for Kids
Leap Year for Kids
What is a Leap Year? | Best Learning Videos For Kids | Thinking Captain
What is a Leap Year? | Best Learning Videos For Kids | Thinking Captain
Why do we have Leap Years? + more videos | #aumsum #kids #science #education #children
Why do we have Leap Years? + more videos | #aumsum #kids #science #education #children
Leap Year: Earth's Journey Around the Sun Explained!
Leap Year: Earth's Journey Around the Sun Explained!
What is a leap year and why do they happen? | Newsround
What is a leap year and why do they happen? | Newsround
What Is a Leap Year?
What Is a Leap Year?
Concept of Leap Year
Concept of Leap Year