Exospheric Ly-α observations of UVIS/HDAC at CASSINI on its Earth swing-by and TWINS are combined to derive the exospheric H-density profile of the ecliptic dayside between 3–15 R_E. At 10 R_E n_H=35 cm⁻³ is found in the vicinity of the subsolar point for quiet space weather conditions. Also a faster radial fall of the dayside H density above 8 R_E (r⁻³) compared to lower distances of 3–7 R_E (r^−2.37) is found and possibly indicates enhanced loss of H atoms near the magnetopause and beyond.