202 1 How many days has it been since April 2 1?

202 1 April 21to the 28th of IO is 190 days. This is the seasonal change of Grain Rain's solar terms after long summer, awning, light summer, great summer, beginning of autumn, white dew and first frost. Wheat, the crop after Grain Rain, is green, and beckons to people when the wind blows. Long summer heading and long grain, harvest awn seeds, miscellaneous grains in summer sowing. After beginning of autumn, he went to the first frost to harvest summer grain and plant winter wheat. All these tasks were completed on the 28th of Io, which is the time of harvest season and grain.