Court's power to rule on new trial motion expires

Except as otherwise provided in Section 12a of this code, the power of the court to rule on a motion for a new trial shall expire 75 days after the mailing of notice of entry of judgment by the clerk of the court pursuant to Section 664.5 or 75 days after service on the moving party by any party of written notice of entry of judgment, whichever is earlier, or if that notice has not been given, 75 days after the filing of the first notice of intention to move for a new trial. If the motion is not determined within the 75-day period, or within that period as extended, the effect shall be a denial of the motion without further order of the court.

CCP 12: "The time in which any act provided by law is to be done is computed by excluding the first day, and including the last, unless the last day is a holiday, and then it is also excluded." CCP 12a(a): "If the last day for the performance of any act provided or required by law to be performed within a specified period of time is a holiday, then that period is hereby extended to and including the next day that is not a holiday. For purposes of this section, “holiday” means all day on Saturdays, all holidays specified in Section 135 and, to the extent provided in Section 12b, all days that by terms of Section 12b are required to be considered as holidays." CCP 12b: "If any city, county, state, or public office, other than a branch office, is closed for the whole of any day, insofar as the business of that office is concerned, that day shall be considered as a holiday for the purposes of computing time under Sections 12 and 12a." CCP 10: "Holidays within the meaning of this code are every Sunday and any other days that are specified or provided for as judicial holidays in Section 135."