Calendar Categories APCO International Charity Conferences Holidays Monthly Meetings Tabletop Training Agenda Agenda Month October 2025 Oct 2025 Collapse All Expand All Oct 13 Mon 2025 Columbus Day (Regional Holiday) @ USA Tickets Oct 13 all-day This national holiday commemorates the exact date when Christopher Columbus first set foot in the Americas 2nd Monday in October Information provided by www.officeholidays.com October 2025 Oct 2025