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Observance · not a public holiday in São Tomé and Príncipe

International Day of Peace

International Day of Peace is not an official public holiday in São Tomé and Príncipe. The date shown is when it falls globally; it may be observed privately or culturally. See São Tomé and Príncipe's official public holidays →
segunda-feira, 21 setembro 2026
in 100 days
Also known as: World Peace Day · UN Peace Day
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The International Day of Peace, September 21, is observed worldwide as a day to commit to peace above all differences. Established by the UN General Assembly in 1981.

History & origin

Established by UN resolution 36/67 (1981). Originally observed on the third Tuesday of September, it was fixed to September 21 by UN resolution 55/282 in 2001. The UN rings the Peace Bell at its headquarters at noon.

Traditions & customs

Moments of silence at noon. Educational events about conflict resolution. Cease-fires honored in some conflict zones during the day. UN events and speeches.

For travellers

Not a public holiday.

Sponsored

Frequently asked questions

When is International Day of Peace?
Always September 21.

More holidays in São Tomé and Príncipe

Related holidays

About this page. caldays.com curates public-holiday data from official government publications and IANA tzdata. For critical decisions (travel, payroll, contracts) please verify with the relevant official source. Long-form content is researched and written by the caldays editorial team.