What’s “Double Spring and Leap Month”?
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?
The moon takes about 29.5 days to revolve around the Earth, so the lunar month is sometimes 29 days, sometimes 30 days.
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.
There is a difference of 11 days between the lunar and solar year, which adds up to about a month over 3 years.
Many people think that the Chinese calendar is one based on the movement of the moon, but this is only half correct.
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.
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.