The time frames identified in this chapter are calculated as follows:

1. (1) "Monthly" means any time within the calendar month.
2. (2) "Annually" means any time within the calendar year.
3. (3) "Six months" means the same calendar date of the sixth consecutive month (e.g., January 1, to July 1, would be six months).
4. (4) "Seven and one-half months" means the same calendar date of the seventh consecutive month plus an additional fifteen days.
5. (5) "Fifteen months" means the same calendar date of the fifteenth consecutive month.
6. (6) "Three years" means the same calendar date of the third consecutive year.
7. (7) "Thirty-nine months" means the same calendar date of the thirty-ninth consecutive month.
8. (8) "Five years" means the same calendar date of the fifth consecutive year.
9. (9) "Ten years" means the same calendar date of the tenth consecutive year.
10. (10) "Calendar year" means twelve consecutive months beginning January 1 and ending December 31.
11. (11) For calendar dates that end on a weekend or holiday, the next business day shall be considered the time frame end date.

[Statutory Authority: RCW 80.04.160, 80.28.210, and 80.01.040. WSR 05-10-055 (Docket No. UG-011073, General Order No. R-520), § 480-93-012, filed 5/2/05, effective 6/2/05.]