Dear Rohit Singh,
The matter in question is critical, and what is suggested is based on normal and common practices, not on a legal point of view.
Under what provisions of the law your organization is applying might have been considered here. Whether it is under the Shops & Commercial Establishments Act or the Factory Act, then only we will come to a conclusion.
Suppose your organization is under the Shops/Commercial Establishment Act, then the weekly off will be counted as leave. But when it is under the provisions of the Factory Act, then all weekly offs are excluded, and salary/wages have to be divided by 26, 27, 25, or 24, depending on the days in the month. Hence, the question doesn't arise to count the leave on weekly offs.
Hope this will clear your query.
Regards,
KIRAN KALE.