Let a = number of set dances, let b = length of dance, let c = scheduled finish time, let d = set dance start time, let e = calculation time
a = 17, b => 2, c = 2130, d=2050, e = unknown
Solve so that c is real and not imaginary :)
Neatest correct entry wins - maths used use a recognised system and be workable in this universe.
