Many states, territories and countries observe on various days with different names: August Monday, August Festival, Culturama, or has related holidays such as Juneteenth or J'ouvert, the celebration is always to commemorate the abolishment of slavery and freedom.
August Monday is the day that celebrates Emancipation Day in some countries. This holiday is the first Monday in August and is the start to a week long summer festival, Carnival, in many caribbean countries.