UN Day of Vesak is observed worldwide every year on May 1. This significant Buddhist holiday celebrates the birth, enlightenment, and passing of Gautama Buddha. The day was officially declared as a United Nations international day in 1999 to honor Buddha's message of compassion, peace, and goodwill, as well as his dedication to humanity. On this day, millions of Buddhists reflect on the life and teachings of the Buddha, engaging in various events and activities. The United Nations encourages both Buddhists and non-Buddhists to participate in these reflections. Activities dedicated to Vesak Day are held at the UN headquarters in New York City and other UN offices globally, acknowledging Buddhism's contributions to the spirituality of humanity.