Spiritual and religiousSouth AsiaBuddhist
Poson
A Sri Lankan Buddhist festival marking the ancient arrival of Buddhism on the island
Poson is an annual Buddhist holiday in Sri Lanka marking the introduction of Buddhism in the third century BC. Celebrated on the June full moon, it draws white-clad pilgrims to holy sites while towns feature lit displays, community food stalls, and decorated homes.
When is Poson kept?
Poson is kept every year in early June, on the full moon.
Poson is a major annual Buddhist festival celebrated throughout Sri Lanka every June. It commemorates the third-century BC arrival of Buddhism on the island, when the monk Mahinda Thero shared Buddhist teachings with King Devanampiyatissa. Across Sri Lanka, followers mark the occasion with sacred pilgrimages, deep meditation, elaborate light structures, community food stalls, and lantern displays at home.
The royal encounter
According to historical tradition, Poson marks the introduction of Buddhism to Sri Lanka in 236 BC. Mahinda Thero, an arahath or enlightened Buddhist monk, travelled to the island and met King Devanampiyatissa on the peak of Mihintale. There, he preached the Dharma to the monarch, leading to royal acceptance and the faith spreading across the kingdom. Anuradhapura soon became one of the earliest urban centres on the island to embrace the Buddhist way of life. Today, this historic transformation remains the foundation of the Poson festival, ranking it as the second most significant Buddhist observance in Sri Lanka after Vesak.
Pilgrimage and reflection
During the festival period, thousands of devotees travel from all regions of Sri Lanka to holy locations. The mountain monastic sanctuary at Mihintale stands as the central gathering place, alongside historic religious landmarks in nearby Anuradhapura. Worshipers wear simple white attire as they visit these revered shrines. Many deeply committed pilgrims spend extended stretches of time in silent meditation and spiritual contemplation. Their quiet devotion honours the enduring customs of the Buddhist path in the very landscape where the teachings were first delivered.
Lanterns, pandols and hospitality
Beyond quiet monastic rites, towns and neighbourhoods take on a festive atmosphere for up to a week. Urban centres display massive pandols, which are large decorative screens illuminated with complex electric lighting patterns. Residential houses are adorned with colourful lanterns and bright lamps. Local groups also organise dansals, which are temporary community distribution points giving out free food to travellers and visitors. To maintain the solemnity and purity of the sacred season, some regions in Sri Lanka enforce restrictions on the sale of alcohol and meat during the celebration.
How Poson is kept
Festivities begin on the full moon day and continue for five days to a full week. Pilgrims wearing white clothing journey to sacred sites at Mihintale and Anuradhapura to pray and engage in silent contemplation. Across the island, families decorate their houses with hanging lanterns and lights. Communities set up dansals to offer free meals to the public, while city squares display large, illuminated pandols. In several regions, vendors temporarily halt sales of meat and alcoholic drinks.
When and where
Poson takes place annually in early June. Its timing is determined by the lunar calendar, aligning with the June full moon, which is known locally as the Poson full moon poya day. Observances run from five days to a full week.
The festival is celebrated across Sri Lanka. Its main focal points are the mountain monastery of Mihintale and the historic Buddhist sites of Anuradhapura, though decorative illuminated pandols and community dansals appear in city centres throughout the island.
What Poson means
For Sri Lankan Buddhists, Poson represents the foundational moment their country received the teachings of Buddhism. The festival commemorates the arrival of Mahinda Thero and the conversion of the ancient king, Devanampiyatissa. By dressing in white, practicing contemplation, and giving free food through dansals, participants express devotion, spiritual purity, and shared generosity.
Questions people ask about Poson
When is Poson kept?
Poson is kept every year in early June, on the full moon.
What is Poson?
Poson, or Poson Poya, is an annual festival celebrated by Sri Lankan Buddhists. It commemorates the spread of Buddhism to Sri Lanka in 236 BC by Mahinda Thero.
Where are the main celebrations held?
While marked across Sri Lanka, the primary gatherings take place at the mountain monastery of Mihintale and the historic Buddhist shrines in Anuradhapura.
What are dansals and pandols?
Pandols are large, electronically illuminated picture structures set up in town centres. Dansals are community-run stalls that hand out free food to passers-by and pilgrims during the festival.
See also
Māgha PūjāA Buddhist holy day honoring monastic unity, moral guidance and spiritual fellowship
VijayadashamiA Hindu festival marking the end of Navaratri, celebrating the victory of good over evil across India and Nepal.
Makar SankrantiA mid-winter harvest festival marking the sun's northward journey, celebrated across South and Southeast Asia with fairs
Ratha YatraAn annual Hindu festival where deities travel through the streets in towering carriagesGood reading and sources
The facts on this page come from the Wikipedia article "Poson", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryParampara rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes. Traditions differ from one family, village and community to the next, and the people who keep them know them best. If something is wrong, tell us. Last refreshed 2026-10-04.
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