Combined scattered and emitted light flux ratio L_p,tot,λ/L_⋆.λ HD 189733b predictions for the Kepler, TESS, and CHEOPS instruments. Left: predicted dayside flux ratio for Kepler (red dot), TESS (green square) and CHEOPS (orange diamond) photometric bandpasses. The solid black line is the model output. Dashed lines indicate the spectral response function of the instrument. Right: predicted Kepler (red), TESS (green) and CHEOPS (orange) flux ratio phase curves. All three instruments show no/little offset from the sub-stellar point, we predict a westward maximum flux offset of only −5°−0° from the sub-stellar point.