UBV absolute magnitudes (black, blue, and green lines) versus time as predicted by the Istrate et al. (2016) evolution track. Horizontal lines mark the magnitude of the PSR J1910−5959A companion in each band, and vertical lines mark the corresponding inferred cooling age. Dashed lines delimit 1σ uncertainty ranges. The inset displays a zoomed-in view of the time and magnitude ranges where the cooling age of the WD companion is inferred from its measured apparent magnitudes converted to absolute magnitudes.