In 1996, Chief Arvol Looking Horse, 19th Generation Keeper of the White Buffalo Calf Pipe Bundle, began conducting annual World Peace and Prayer Day (WPPD) ceremonies to encourage people of all faiths and all nations to offer prayers for the planet on the summer solstice, June 21st. Across cultures, the solstice is considered a powerful time to pray, especially at sacred sites. Over the past 23 years, Chief Arvol’s annual gathering for communal ceremony, dialogue, and prayer has travelled the world—Ireland, Japan, Brazil, New Zealand, South Africa, Mexico—and in the US it has been hosted at sacred sites in South Dakota, Wyoming, New York, Hawaii, the Pacific Northwest, and elsewhere.