How to create Analog Clock in our app that rotated time to time

hi I am creating an app in which i need to create a analog clock that showing time of the device and according to the that clock how to get the time of different countries.

So at this point i does not get any idea how to create the clock please any one help me please refer me any tutorial from where i can fetch the clock ple开发者_开发百科ase....

---

Here you have already implemented clocks.. You can download it an check how other guys did it or use their classes if you need them..

ClockView for iOS

PSAnalogClock for iOS