You can set your datetimepickervalue in appDelegate file variable. So you can define one sting in your appDelegate file like below.
I hope you want to set date in some UI like label or textField, means you need date in NSString, so to get NSString form NSDate go to this link.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.