Short answer. Thirty days from notice of the judgment, final order or resolution sought to be reviewed. A motion for new trial or reconsideration, if the Commission's own rules allow one, interrupts the period — but after denial you get only the remaining balance of the thirty days, never less than five days.
What the law says
The petition shall be filed within thirty days from notice of the judgment or final order or resolution sought to be reviewed.
Rule 64, Section 3 — Time to file petition. Read the full provision →
What the law says
the aggrieved party may file the petition within the remaining period, but which shall not be less than five days in any event, reckoned from notice of denial
Rule 64, Section 3 — Time to file petition. Read the full provision →
Thirty days from notice
Rule 64 governs review of the judgments and final orders of the Commission on Elections and the Commission on Audit, and its clock is stated flatly: the petition shall be filed within thirty days from notice of the judgment or final order or resolution sought to be reviewed. The count starts on notice — the day the ruling is actually received — and the destination is the Supreme Court. Thirty days sounds generous next to shorter appeal periods, but the petition this Rule contemplates is a substantial one, and the way the period behaves after a motion for reconsideration makes the real time available shorter than it looks.
A motion for reconsideration only pauses the clock
Filing a motion for new trial or reconsideration with the Commission, if allowed under the procedural rules of the Commission concerned, interrupts the thirty-day period. Note the condition — the interruption depends on the Commission's own rules permitting the motion, so verify that before relying on it. And note what interrupt means here: the clock pauses, it does not reset. The days you spent before filing the motion are already consumed; they do not come back when the motion is decided.
After denial: the remaining period, not a fresh one
This is the trap in Rule 64. If the motion is denied, the aggrieved party may file the petition within the remaining period, but which shall not be less than five days in any event, reckoned from notice of denial. A party who used twenty-five of the thirty days before moving for reconsideration has five days — the floor — from notice of the denial to file in the Supreme Court. Anyone accustomed to appeal periods that restart in full after a denial will miscount here, and the miscount is fatal. Compute the remaining balance the day the motion is filed, not the day it is denied.
Practical arithmetic for the aggrieved party
Two habits protect the deadline. First, log the notice dates precisely — of the ruling, and later of the denial — because every computation hangs on them. Second, move for reconsideration early in the thirty days if you intend to move at all: every day saved before filing the motion is a day of drafting time preserved for the petition afterwards. Prepare the petition while awaiting the resolution of the motion, since a five-day window is enough to finalise and file a petition already substantially written, and nowhere near enough to start one.