The period of 90 days under Section 30(b) of the Limitation Act, 1963 applies from:

Section 30(b) gives "a period of ninety days next after the commencement of this Act", or the 1908 Act period if that expires earlier. The ninety days run from the commencement of the 1963 Act, not from the decree, the accrual of the right or the end of the old period.