Continuous measurements of solar spectral radiation using the Multi-filter Rotating Shadow Band Radiometer (MFRSR) were performed at Nainital a high altitude location in the central Gangetic Himalayan region. The present work utilizes two clear-sky days of continuous observations from local sunrise to local sunset, in order to investigate the daily variation of the solar radiation components (diffuse, global and direct-beam) as well as their ratios (diffuse-to-global: DGR; and diffuse-to-direct beam, DDR).