Any way to copy calendar off of ipod touch and onto my computer?

is there a way to copy calendar dates off of my ipod touch and put them on my computer? or a way to back them up? cause im about to jailbrake my sisters ipod(i know how to fine, dont need any help with that), but she has all her work schedule on the calendar, and theres about a month in advance on it and she doesnt want to have to put it all back in again. is there a way to do it or do i have to manually copy them all?