Abolition of Slavery Day, also known asFête des Cafres(Réunion,French Guiana)

A commemorative day marking the end of slavery in Réunion and French Guiana, celebrated as Fête des Cafres.
Abolition of Slavery Day, or Fête des Cafres, is observed on December 20 in Réunion and French Guiana to honor the historic 1848 decree that ended slavery in French territories. This day celebrates the courage and resilience of the descendants of enslaved Africans and their contributions to local culture. Festivities include music, dance, traditional costumes and community gatherings that reflect Creole heritage. Parades and educational events highlight the history of slavery and its abolition. Citizens and visitors join together to reaffirm commitments to equality, justice and human rights. The holiday fosters reflection on the ongoing legacy of slavery and encourages solidarity across diverse communities. It is a vibrant reminder of a pivotal moment in the region’s history.
Fête des Cafres Réunion French Guiana

Earliest date forWinter solstice's eve (Northern Hemisphere), and its related observances:

Yaldā(Iran)

Winter Solstice Eve, celebrated as Yaldā in Iran, marks the longest night of the year with gatherings of family, poetry readings and festive treats.
Yaldā Night, observed at the winter solstice, is an ancient Persian celebration welcoming the return of longer days. Families gather late into the night to share fruits like pomegranates and watermelons, symbolizing health and prosperity. Reading classical poetry, especially the works of Hafez, is a cherished tradition believed to bring good fortune. Candles and lanterns are lit to dispel darkness and usher in light and warmth. Special dishes, music and storytelling create a spirit of community and reflection on renewal. Rooted in Zoroastrian heritage, Yaldā blends myth, literature and social customs. Across Iran and among diaspora communities, the festival fosters connection and hope as winter progresses.
Winter solstice Yaldā Iran

International Human Solidarity Day(International)

A UN-designated day promoting unity and collective responsibility to achieve sustainable development and poverty eradication worldwide.
International Human Solidarity Day, established by the United Nations, is observed annually on December 20. The day celebrates the importance of solidarity in addressing global challenges such as poverty, inequality and climate change. It encourages individuals and governments to uphold the values of mutual support, shared responsibility and inclusive growth. Events include panel discussions, fundraising drives and social media campaigns that highlight successful cooperation models. Educators and community groups organize workshops to foster tolerance, diversity and cross-cultural understanding. The observance underscores the role of partnerships in fulfilling the Sustainable Development Goals. By reflecting on our common humanity, the day inspires positive action and global collaboration.
International Human Solidarity Day International