Time For iPhone, is there a cmos in iPhone to get time and date?

I am trying to work on an app that requires开发者_Python百科 time from the iPhone, but not from the iphone clock where user can modify it, is it possible?

No you can't. You can only access the clock that a user can change. You could always write a small web API that you can call to compare the time to the local time and then you can calculate the offset.