These two invented brightness curves describe the same changing source. The second is magnified by a factor of 1.6 and arrives later. Adjust the proposed delay to align its corrected curve with the first.
Reveal the example and its limits
The true invented delay is 37 days. The source curve is F(t)=1+exp[−((t−40)/15)²]+0.25exp[−((t−80)/7)²]. The second curve is 1.6F(t−37). The display compares F(t) with the second curve evaluated at t+your delay, divided by 1.6.
Real lens measurements include noise, uneven sampling, microlensing and changing magnification. Matching light curves estimates an arrival-time difference. Converting that delay into a cosmological distance additionally requires a lens mass model and redshifts. This page estimates no Hubble constant.