18.12 Calculation of Theta Theta is calculated from the central nodes at times o and 2st 3.77-4.49 Theta =4.3 per year 0.1667 or-0.012 per calendar day Options, Futures, and Other Derivatives, 5th edition C 2002 by John C Hull18.12 Options, Futures, and Other Derivatives, 5th edition © 2002 by John C. Hull Calculation of Theta Theta is calculated from the central nodes at times 0 and 2dt or . per calendar day Theta = per year 0 012 4.3 0.1667 3.77 4.49 - = − −