National Days in April
34 observances and awareness days are listed for April.
A widely observed cultural day associated with jokes, hoaxes, and playful pranks.
A United Nations international observance marked on April 2.
Independence Day observed in Senegal on April 4.
A United Nations international observance marked on April 4.
An official international observance listed by UNESCO and marked on April 5.
An official international observance listed by UNESCO and marked on April 6.
An official international observance listed by UNESCO and marked on April 7.
An annual World Health Organization observance highlighting a priority public-health theme.
A United Nations international observance marked on April 12.
A World Health Organization global public-health observance marked on April 14.
An official international observance listed by UNESCO and marked on April 15.
National Day observed in Syria on April 17.
National Day observed in Zimbabwe on April 18.
A United Nations language day celebrating Chinese as one of the official UN languages.
A United Nations international observance marked on April 21.
A global environmental observance centered on climate action, conservation, and sustainability.
A United Nations international observance marked on April 22.
A United Nations international observance marked on April 23.
A United Nations international observance marked on April 23.
An official international observance listed by UNESCO and marked on April 23.
A United Nations observance promoting multilateralism and diplomacy for peace.
An official international observance listed by UNESCO and marked on April 25.
A United Nations observance recognizing the role of delegates of Member States.
A World Health Organization global public-health observance marked on April 25.
A United Nations international observance marked on April 26.
Union Day observed in Tanzania on April 26.
A United Nations international observance marked on April 26.
Freedom Day observed in South Africa on April 27.
Independence Day observed in Sierra Leone on April 27.
King's Day observed in Netherlands on April 27.
National Day observed in Togo on April 27.
An ILO observance promoting the prevention of occupational accidents and diseases globally.
A United Nations international observance marked on April 29.
An official international observance listed by UNESCO and marked on April 30.
Frequently Asked Questions
No. Official public holidays and UN or government-backed observances are labeled separately from curated awareness days and cultural entries.
Each entry carries a source label where available. The national-days layer avoids presenting weakly sourced awareness days as official holidays.