When is the 20 16 rain solar term and what is its origin?

20 16: 20 16 what's the date of the rain in February 19 (Friday)?

The origin of rain solar terms

Rain means that it begins to rain, and the rainfall gradually increases. Rain has two meanings, one is that the weather gets warmer and the precipitation increases gradually, and the other is that there is less snow and more rain. "Twenty-four solar terms" said: "In the first month, water is in the sky. Spring belongs to wood, but there must be water for those who grow wood, so there is rain in beginning of spring. If the east wind melts, it will disperse into rain. "