Maximum Magnitude–Rate of Decline relation (MMRD) for novae with well-defined maxima and t₂ in the Milky Way (MW), LMC, M33, M31, and M87. t₂ is the time it takes a nova to decline 2 mag from its peak brightness. The filled squares represent MW novae from Downes & Duerbeck (2000), T denotes the symbiotic nova T CrB (Schaefer 2010; J. Mikołajewska 2016, private communication), upright triangles are LMC novae from Shafter (2013), and inverted triangles are M33 novae from Shafter et al. (2012). 12a refers to M31-12a (Darnley et al. 2016), the open/filled stars denote M31 novae from Kasliwal et al. (2011) and Shafter et al. (2011), and open/filled circles denote M87 novae from Shara et al. (2016). The M31 data used transformations from g to V of Jordi et al. (2006). The solid and dashed lines represent the best-fit power law and the S-shaped curves of MW novae (Downes & Duerbeck 2000). The deviation of each nova from the S-shaped curve in Figure 1 is plotted in the figure’s lower panel.