This paper analyzed the availability of cloud-free data from the programs Landsat (surface reflectance, 1982- 2019) and Sentinel-2 (TOA reflectance, 2015-2019) over the Brazilian territory. In the case of Landsat, the amount of information available increased considerably in 1999 with the start of Landsat 7. However, mainly due to the presence of clouds, the availability of data varies greatly in space and time...