37 U.S.C. § 1004 : US Code - Section 1004: Computation of pay and allowances for month or part of month

Search 37 U.S.C. § 1004 : US Code - Section 1004: Computation of pay and allowances for month or part of month

A member of a uniformed service who is entitled to pay and
allowances under this title for a continuous period of less than
one month is entitled to his pay and allowances for each day of
that period at the rate of 1/30 of the monthly amount of his pay
and allowances. The thirty-first day of a calendar month may not be
excluded from a computation under this section.