How do I get next fire date from a local notification..?

How do I get next fire date from a local notification..?

I am implementing a reminder application using UILocalNotifications, and
want to allow user to set repeat mode. For repeating mode used
NSDayCalenderUnit, NSWeekCalendarUnit, etc..
I didn't see any property in LocalNotification class to get the next fire
date from a notification.
Example
"{fire date = Friday, September 6, 2013, 7:05:00 AM India Standard Time,
time zone = Asia/Kolkata (GMT+05:30) offset 19800, repeat interval =
NSWeekCalendarUnit, repeat count = UILocalNotificationInfiniteRepeatCount,
next fire date = Friday, September 6, 2013, 7:05:00 AM India Standard
Time, user info = {\n
kRemindMeNotificationDataKey = \"Test Notification\";\n}}"
Any one please help me out to get the next fire date from a local
notification.
Thanks in advance.