what i can do when my calendar is different for my

[freeman_ag]

what i can do when my calendar is different for my sets of books
hi team
we have in our company 30 set of books all of them have calender type is calender from ( 1/1 to 31/12

but we will add new set of book but its calender is fiscal, so we will face a problem when doing closing for all 30 set of books to consolidate it in 31/12 we need also add the new set of book in 31/12 but the day of 31/12 is ordinary day in the new set of book

how can i consolidate all 31 set of book include new set of book which has fiscal calender

we work on Oracle Applications : 11.5.9