On day 29, Sept. 23, after oral arguments from the prosecution and defense, the impeachment court voted 13-1 to reverse Presiding Officer Francis “Chiz” Escudero’s July 6 ruling that 16 votes—two-thirds of the 24-member Senate—were required to convict Duterte.

The impeachment trial took an unexpected turn on Day 26, when the Senate heard four retired Supreme Court justices on a separate but potentially crucial question: whether the two-thirds vote required to convict Duterte should always mean 16 votes in the 24-member Senate.

Dressed in black suit and white polo shirt, Duterte appeared attentive as Trial Chamber III tackled procedural and administrative issues ahead of his Nov. 30 trial on crimes against humanity.