There is vast difference in theory than real time trading In between till expiry Theory will show only the probability how if it expires . We need to do adjustment just like we change gears , apply brakes while driving according to the situation of the speed , place, good road, bad road, raining, mud road , small road etc.
In real time we can do many adjustments before expiry. We need not wait for expiry. Some hold postions for 5 to 10 days, some 10 to 15 day. some hold till expiry. Some do adjustments . I cover current month postion before 10 to 15 days and write next month. It becomes very difficult to adjust if time period is less than 10. days The delta, thetha etc everythng changes very fast in the last 10 to 5-1 days till expiry. Last 10 days is s just like driving car at very high speed and want to control which is difficult. Next Month is just like driving at medium speed and we can control it.
Bye the way can you tell me which software is this.
Actually I have calculation in my mind always. I do it with calculator. But here calculation does not work. It shows probalility at expiry which is quite different from real trading and holding position