First of all understand that the date component will be 01-01-1970 because it isn't provided. I am assuming that you want the time to be 04:00 GMT if the input string is "04:00" . That you can achieve by setting the time zone of the formatter.
NSDate is used to represent a date and time. While you can represent just a date by sticking with midnight, you can't really represent just a time of day with it. You can sort of fake this on the Mac (it defaults to some reasonable day), but on iOS you'll get wildly inaccurate times instead.
(At least, you do on certain versions. This may have been fixed.).
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.