Monthly accounting periods that do not match calendar

Is there any possibility of defining my own accounting periods with in a fiscal year? I have been using Sage 50 for my clients and it lets you define your own monthly accounting periods once you set the starting date of your accounting(fiscal) year. Within a fiscal year you define 12 custom accounting periods within the range of the fiscal year. Is there any possibility in QuickBooks?? Is it planned for the future releases?? This is important for clients who has their own calendar.