 We evaluated solar illumination effects over tropical forests in Brazil using a hyperspectral experiment from the Earth Observing One, EO1, orbit change, with 10-native viewing Hyperion images collected over a fixed site and period of the year. Our analysis showed significant changes in Hyperion reflectance and vegetation indices, the eyes, especially when the EO1 crossed the study area at earlier times and larger solar zenith angle, SZA, in 2015 and 2016. The results indicated that the SZA differences of 14°, 2015, and 22°, 2016, increased the shade fractions and decreased the vegetation brightness, with PCA separating the pre-drift and drift reflectance datasets. The change point analysis showed that the plants and essence reflectance index, PSI, anthocyanin reflectance index, AI, and structure insensitive pigment index, CIPI, presented the largest positive changes during drift, while the photochemical reflectance index, PI, visible atmospherically resistant index, VARI, and enhanced vegetation index, EVI, had the largest negative changes. The effect size of the illumination geometry on these VIs was large, as indicated by increasing values of the coen's ametric toward 2016. This article was authored by Linne Osorres-Galvo, Alana Almeida-De Cesar and Favio Marcelo Brunig. We are article.tv, links in the description below.