Knowledge of the diurnal course of land surface albedo is needed for monitoring radiative transfers between soil, vegetation, and atmosphere. These transfers are of interest for crop monitoring, hydrological cycle modeling, weather forecast, and climate modeling. The required absolute accuracy ranges between 0.02 and 0.05. At the present time, it is possible to derive the diurnal course of albedo from geostationary satellites. Sun-synchronous sensors, with higher spatial resolutions, allow retrieving surface radiative properties by both discriminating different types of land cover and capturing the subclass variability. However, the current possibilities for deriving the diurnal course of albedo from Sun-synchronous observations are empirical or mathematically complex. We proposed in this paper a physically based method, which is candidate for operational use along with multiangular Sun-synchronous sensors, under clear-sky conditions. This method uses both reciprocal kernel-driven bidirectional reflectance distribution function (KD BRDF) models and narrowband to broadband (NTB) conversion. It was implemented and validated using the Alpilles-RESEDA database which was collected over agricultural areas. The implementation was performed using the 20 m spatial resolution airborne POLDER data acquired near midday. The validation was conducted using field measurements of albedo, recorded over the diurnal cycle. The retrievals of the diurnal course of albedo were good, with errors ranging from 0.026 to 0.029. Better results were observed for instantaneous values at solar noon and times close to satellite overpasses as well as for the daily mean value, with errors ranging between 0.014 and 0.022. Among the selected reciprocal KD BRDF models, Li-Ross systematically provided the best results, regardless of considered albedo product. Further, using instantaneous values at times close to satellite overpasses, in place of the daily mean value, did not yield significant differences, with errors ranging around 0.01. Finally, we assessed the interest of deriving the diurnal course of reflected solar irradiance by using the several albedo products aforementioned. For the environmental conditions of the Alpilles-RESEDA experiment, the resulting differences were not significant, with accuracies better than 20 W m−2.