What is International Day of Happiness called in French with how to pronounce and transliteration in English?

English to French

• World Habitat Day
• International Widow’s Day
• International Day of Forests and the Tree Journée internationale de la forêt et l'arbre
• World Day of Social Justice Journée mondiale de la justice sociale
• World Autism Awareness Day
• World Tuberculosis Day
• World Food Day Journée mondiale de l'alimentation
• International Day of Charity Journée internationale de la Charité
• International Day for Tolerance
• International Left Handers Day