This paper addresses the challenges of securing large-scale, high-quality sensor data, which is essential for ensuring the safety and robustness of autonomous driving. While research on generating synthetic camera sensor data is active due to the difficulty of collecting real-world data, research on diurnal variations is lacking. Therefore, this paper proposes solar elevation as a global condition variable. This variable can be easily calculated from latitude, longitude, and local time, eliminating the need for manual labeling. Furthermore, we propose a custom normalization technique that considers the sensitivity of daylight to small numerical variations in solar elevation, and demonstrate its ability to accurately capture illumination characteristics and illumination-dependent image noise within the context of a diffusion model.