When is beginning of spring on 20 19?

Beginning of spring is the first of the 24 solar terms. Standing means "start"; Spring represents warmth and growth. Twenty-four solar terms were originally formulated on the basis of "variable stars". When the bucket handle of the Big Dipper points to the shade, it is beginning of spring.

Spring is the beginning of everything, the meaning of all self-renewal, which means that a new cycle has begun.