determination date
(vi) The term determination date means each day within the taxable year of a pooled income fund on which a valuation is made of the property in the fund. The property in the fund shall be valued on the first day of the taxable year of the fund and on at least 3 other days within the taxable year. The period between any two consecutive determination dates within the taxable year shall not be greater than 3 calendar months. In the case of a taxable year of less than 12 months, the property in the fund shall be valued on the first day of such taxable year and on such other days within such year as occur at successive intervals of no greater than 3 calendar months. Where a valuation date falls on a Saturday, Sunday, or legal holiday (as defined in section 7503 and the regulations thereunder), the valuation may be made on either the next preceding day which is not a Saturday, Sunday, or legal holiday or the next succeeding day which is not a Saturday, Sunday, or legal holiday, so long as the next such preceding day or next such succeeding day is consistently used where the valuation date falls on a Saturday, Sunday, or legal holiday.