2021 PHILIPPINE INTERNATIONAL QUINCENTENNIAL CONFERENCE (PIQC): OCTOBER 20 – DECEMBER 17, 2021 Posted on October 14, 2021 by DepEd Mandaluyong Leave a comment 21-10-32. 2021 PHILIPPINE INTERNATIONAL QUINCENTENNIAL CONFERENCE (PIQC): OCTOBER 20 – DECEMBER 17, 2021 Memorandum Unnumbered