International Day of Action Against Canadian Seal Slaughter is celebrated on March 15, 2026.

March 21, 2027 brings International Day of Forests — one of spring's more delightful excuses to celebrate.

September 26, 2027 brings International Day for the Total Elimination of Nuclear Weapons — one of fall's more delightful excuses to celebrate.

It's International Day for the Total Elimination of Nuclear Weapons on September 26, 2026.

It's International Day for the Preservation of the Ozone Layer on September 16, 2027.

It's International Day for the Preservation of the Ozone Layer on September 16, 2026.

It's International Day for the Abolition of Slavery on December 2, 2027.

August 31, 2027 brings International Day for People of African Descent — one of summer's more delightful excuses to celebrate.