What’s “Double Spring and Leap Month”?
什么是闰二月？闰二月是怎么来的？
Most people have heard of the term “double spring and leap month” and know that it’s a sign of good fortune and a great month for loved ones to get married. But what exactly is this month?
大多数人应该听说过“双春闰月”这个词，并表示这是好运的象征，是相爱之人结婚的好兆头。究竟是什么？
The moon takes about 29.5 days to revolve around the Earth, so the lunar month is sometimes 29 days, sometimes 30 days.
月球绕地球公转一周大约需要29.5天，所以农历月有时是29天，有时是30天。
From that, a year is about 354 days. But we all know a year is about 365 days as the Earth returns to its original position in that period of time.
这样算下来，全年大约是354天。但我们都知道，一年大约是365天，地球会回到它原来的位置。
There is a difference of 11 days between the lunar and solar year, which adds up to about a month over 3 years.
阴历年和阳历年相差11天，3年就会相差一个月左右。
Many people think that the Chinese calendar is one based on the movement of the moon, but this is only half correct.
许多人认为中国的历法是是基于月亮的运行，但这只说对了一半。
The Chinese calendar uses the movement of the moon around the Earth to determine the length of a month, but it also makes reference to the position of the Earth relative to the Sun to mark the year.
中国的历法利用月球围绕地球的运动来确定一个月的长度，但它也参照了地球相对于太阳的位置来标记一年。
The setting of the leap month is a way to fill the gap of days between the solar calendar and lunar calendar in one year, which is usually 11 or 12 days, so as to make sure the four seasons fit within the months.
闰月的设置是为了填补一年中阳历和阴历之间的天数差异，即11天或12天，从而使四季基本吻合月份。
