- International dayWorld Tuna Day
- International dayWorld Press Freedom Day
- International dayWorld Portuguese Language Day
- State holidayPrimary Election Day
- International observanceTime of Remembrance and Reconciliation for Those Who Lost Their Lives During the Second World War
- State holidayTruman Day
- International observanceTime of Remembrance and Reconciliation for Those Who Lost Their Lives During the Second World War
- International dayInternational Day of Argania
- International dayWorld Migratory Bird Day
- U.S. observanceMother's Day
- International dayInternational Day of Plant Health
- International dayInternational Day of Families
- International dayInternational Day of Light
- International dayInternational Day of Living Together in Peace
- International dayWorld Telecommunication and Information Society Day
- International dayWorld Fair Play Day
- International dayWorld Bee Day
- International dayInternational Tea Day
- International dayWorld Day for Cultural Diversity for Dialogue and Development
- International dayInternational Day for Biological Diversity
- International dayInternational Day to End Obstetric Fistula
- International dayInternational Day of the Markhor
- International dayWorld Football Day
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
- U.S. federal holidayMemorial Day
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
- International dayInternational Day of UN Peacekeepers
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
- International dayInternational Day of Potato
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
- International dayWorld No-Tobacco Day
- International weekWeek of Solidarity with the Peoples of Non-Self-Governing Territories
Calendar sources: OPM, US holiday calendar, United Nations. Regional and observed dates are labelled on each entry.