The ICS delta's (commutating intervals) are derived by an eliptical SOL Galactic Orbit, if the arms and central bar are causal to Periods and PER. The PTr PER point is at aphelion and the Oligocene and OS is at perihelion. Gilman-Erlener 704M period then is close to 714M, but no cigar (2.5% error). I wrote to these guys, yet to hear from them tho...