What's the date of 1977 in beginning of spring?

Today is Friday, February 4th, in Chen Bing, on the 17th day of the twelfth lunar month (the Year of the Loong).

Beginning of spring is one of the "24 solar terms" in the Ganzhi calendar. The "Twenty-four solar terms" were originally determined by the direction of the top of the bucket handle of the Big Dipper. At the age of one (year), bucket handle turns to "Twelve Chens", which is called "December Building" (or "Twelve Orders"), and "Building" represents the direction of the top of the bucket handle of the Big Dipper.

Bucket handle starts from the northeast (Yin position, gossip position the day after tomorrow), turns south, west and north, referring to the ugly side at the end of December, and returns to Yin position in the first month, so "bucket handle returns to Yin position" is spring positive; "bucket handle Yin Hui" refers to the beginning of everything and the rebirth of everything. When the barrel handle points to the shade, it is beginning of spring, which means a new cycle begins.

Beginning of spring is not only the first of the 24 solar terms, but also in nature and people's minds, spring means warm weather, flowers and birds, the growth of all things and the sowing of spring. The so-called "one year's plan lies in spring".

In climatology, spring refers to the period when the average temperature is between 10℃ and 22℃. Speaking of beginning of spring, people obviously feel that the days are getting longer and the sun is getting warmer. Temperature, sunshine and rainfall are often at the turning point of the year and tend to rise or increase.