September 16, 2026 (Day 26)
The 26th day of the trial featured arguments from esteemed amici curiae (friends of the court): including retired chief justices Artemio Panganiban, Reynato Puno, and Hilario Davide Jr., who provided expert legal opinions on the proper interpretation of the two-thirds vote threshold required to convict the vice president. The core debate centered on whether the two-thirds conviction requirement should be computed based on all twenty-four members of the Senate or restricted only to senators actively participating in the trial.
