3-60: Spectral Daylight Characteristics

The aim of this TC is to review geographical, seasonal and time-of-day variations in the spectral power distribution of daylight for the range between 380 nm and 780 nm, when represented by D (daylight) illuminants, make a proposal for updating the CIE015:2018 reconstitution procedure to calculate D illuminants at a nominal correlated colour temperature, and provide spectral information for CIE standard general sky types.