Residuals for the timings of HAT-P-36 b at mid-transit versus a linear ephemeris. The four timings reported by Bakos et al. (2012) and the two by Maciejewski et al. (2013) are plotted using empty circles, while those marked with grey circles are from ETD. The timings measured by this work are shown with black circles. The dashed lines mark 2σ uncertainties of the ephemeris (i.e. at the 95% confidence level), which was estimated without considering the data from ETD.