Boun Khao Phansa is the start of the three month period, referred to as “Buddhist Lent’’. Boun Khao Phansa starts on the full moon of the eighth month and runs till the full moon of the eleventh month of the Buddhist Calendar. 

Khao Phansa Day holds immense historical significance in Laos as it commemorates the day when Lord Buddha delivered the first sermon to his disciples after the rainy season. As the monsoon rains begin to fall, Buddhist monks retreat to their temples for a period of intensive meditation and teaching. It is believed that this practice originated over two thousand years ago when Buddha encouraged his followers to abstain from travel during the rainy season to avoid harming any living creatures.

The festival begins with a colorful and lively procession known as "Boun Khao Phansa." Monks dressed in saffron robes lead the procession, accompanied by traditional music, dance performances, and beautifully adorned floats depicting scenes from Buddhist scriptures. Devotees line the streets, offering flowers, incense, and food to the monks as acts of merit and devotion. 

Khao Phansa Day provides a unique opportunity for visitors to immerse themselves in the spiritual ambiance of Laos. Temples and monasteries across the country open their doors to welcome guests to witness the rituals, listen to sermons, and gain a deeper understanding of Buddhist teachings. The serene atmosphere, illuminated by flickering candles and the sound of chanting, creates a sense of tranquility and introspection.

The celebration of Khao Phansa Day not only holds religious significance but also plays a crucial role in preserving Laos' cultural heritage. The festival serves as a reminder of the country's deep-rooted traditions, fostering a sense of unity and pride among its people. It also offers a glimpse into the spiritual fabric of Laos and the profound influence of Buddhism on its society.