This is the 3608th most frequent Russian word.
солнечного
"Of the sun" or "sunny."
солнечного света refers to sunlight, indicating its quantity in comparison.
Сегодня солнечного света было больше, чем вчера.
Today there was more sunlight than yesterday.
солнечного дня describes a sunny day, showing its quality or conditions.
Я готовлюсь к солнечного дня летом.
I am preparing for a sunny day in the summer.
солнечного пейзажа signifies a landscape affected by sunlight, indicating its appearance.