I tried extrapolating previous bullruns and how they differ in relation to the halvings.
It seems that the peak of each cycle is happening later in every cycle (warning: there are only 2 data points!).
Either way, if you divide the days from the 2012 halving to the peak, and the 2016 halving to the peak, they differ by a factor of 1,312. If you time that by the last duration, you will get the projection on the chart.
I think this is an interesting observation! I hope you like it.
Thank you