What works represent Monet’s understanding of seasons, time and weather?

1890s. Monet carefully studied different seasons, different hours of the day, weather conditions, and the changing light and atmosphere, and painted several sets of paintings, such as "Haystacks", "Rouen Cathedral", "Water Lilies" and so on, all have the same theme, so that the endless changes in light at different times are displayed in front of people's eyes.