For the purpose of granting credit for service performed on a per diem basis, credit shall be prorated and granted on the basis of 15 days equals one month of credit.
N.J. Admin. Code § 17:10-4.6
See: 35 New Jersey Register 388(a), 35 New Jersey Register 3381(a).
Reduced the number of days equaling a month of credit from 20 to 15.