In a leap year, the dates jump over one day of the week.

在闰，日期会跳过一周中的一天。

February has twenty-eight alone. All the rest have thirty-one. Except in leap year.

二月仅有二十八天。 除了在闰， 余的月份均有三十一天。

After all, we all know the answer is 365-and 366 in leap years-right?

毕竟，我们都知道答案是365天，而闰是366天，对吧？

All right, so 2024 is a leap year.

2024是闰。

We have a solar eclipse taken place in April, and it's a leap year.

四月有日食，今又是闰。

Looking at you here, leap years.

看日历，2020闰。

So, leap years might seem silly.

因此，闰看起来很愚蠢。

It's called a leap year and it's maybe the strangest thing we do on the calendar.

被称为闰，是我们在日历上所做的最奇怪的事情。

Who came up with leap years and why do we have them?

谁提出了闰，为什么我们有闰呢？

And there is some interesting history associated with leap years.

有关闰还有一些有趣的历史。

And the entire 12 month period with a February 29 in it is called a leap year.

12个月的时间里拥有2月29日的那一被称为闰。

We get 366 days on the calendar instead of 365. But why, what is a leap year?

日历上总共有366天，而不是365天。但是，是为什么呢，闰到底是什么？

To mark the start of the 366-day countdown (2012 is a leap year), special events are planned for today.

今天，人们计划举办独具特色的庆祝活动来启动伦敦奥运会366天倒计时（2012是闰）。

Pope Gregory also made February 29th, the official date to add during a leap year.

格里高利还把2月29日确定为闰的官方日期。

So, that's how leap years work.

所以，就是闰的机制啦。

That means that in the 1600s, the 2000s, those have leap years, but not the 1700s, 1800s, and 1900s.

意味着在1600，2000，些是闰，但在1700、1800和1900不是。

Leap years were believed to be difficult, and leap days unlucky and a bad time to begin anything new.

闰被认为是很艰难的一， 而闰日是不吉利的，不是开始新事物的好时机。

Last year was a leap year, skewing the comparison of this year's shorter first quarter with last year's longer one.

去是闰，所以今的第一季度相对去来说要短一些。

He reformed the calendar, so that it ended up being more or less like ours, with 12 months and leap years.

他想重新划分历，划分的方法几乎跟我们今天的一样，用12个月和闰。

So, folks born on that date in a leap year will get to celebrate their birthdays on their actual birth date.

因此闰那一天出生的人们会在样的实际日期庆祝自己的生日。