September 2026 in São Tomé & Príncipe
3 holidays / observances this month. Notable dates include Armed Forces Day, Armed Forces Day (substitute day), Agricultural Reform Day. See the full 2026 calendar or holidays list.
Calendar
September 2026 — São Tomé & Príncipe
Full September 2026 calendar for São Tomé & Príncipe. Tap a marked day for holiday details.
Public / federal holidayObservanceInternational dayToday
September 2026
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Holidays in September
3 dates
Armed Forces Day
Sun, Sep 6 · Public holiday
Armed Forces Day (substitute day)
Mon, Sep 7 · Public holiday
Agricultural Reform Day
Wed, Sep 30 · Public holiday