Udaya

Observance Buddha

Poson Poya

The full moon of the Sinhala month of Poson, one of the twelve Poya days the island keeps.

Poson Poya 2027 falls on Friday, 18 June, computed for Chennai.

  • Calendar Sri Lanka
  • Mantras 3
  • Dates to 2036

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Latitude, longitude and time zone 13.08, 80.27

Asia/Kolkata · UTC+5:30

The date of a festival depends on the place.

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A tithi that ends at dusk in Chennai can still be running at dusk a thousand kilometres west, which moves the day. Sunrise and sunset here are computed for the place above.

When it falls next#

Sri Lanka calendar, computed for Chennai

  1. Friday, 18 June 2027
  2. Tuesday, 6 June 2028
  3. Monday, 25 June 2029
JanFebMarAprMayJunJulAugSepOctNovDec272829

Where Poson Poya falls on the solar year, and how far the date moves between occurrences.

  • 2027: 18 Jun
  • 2028: 6 Jun, 11 days earlier
  • 2029: 25 Jun, 18 days later

See the whole year on the calendar →

The dates, year by year#

Sri Lanka calendar, computed for Chennai

Each row is one year on the same January to December line; the figure at the end is how many days earlier (−) or later (+) the day fell than the year before.
12 years, 2025 to 2036
Poson Poya dates from 2025 to 2036
YearPoson PoyaAgainst the year before
2025Tuesday, 10 June 2025
2026Saturday, 30 May 2026 — some traditions keep it on Monday, 29 June 202611 days earlier
2027Friday, 18 June 2027 19 days later
2028Tuesday, 6 June 2028 11 days earlier
2029Monday, 25 June 2029 18 days later
2030Saturday, 15 June 2030 10 days earlier
2031Thursday, 5 June 2031 10 days earlier
2032Wednesday, 23 June 2032 19 days later
2033Sunday, 12 June 2033 12 days earlier
2034Thursday, 1 June 2034 11 days earlier
2035Wednesday, 20 June 2035 19 days later
2036Sunday, 8 June 2036 11 days earlier

Worked out for Chennai, Lahiri ayanamsa. A date is a function of the place: set yours above and the next three come back for where you are.

What the day is#

The full moon of the Sinhala month of Poson, one of the twelve Poya days the island keeps. Every Poya is a day of sil: white is worn to the temple, the eight precepts are taken before a monk, and the day is passed in listening, reciting and meditating rather than in work. This one is kept for the coming of the Dhamma to the island, when Mahinda Thera met King Devanampiya Tissa on the rock at Mihintale.

Deity
Buddha
Kind
Observance Days marked, watched or begun, without a fast or a feast of their own.

Significance#

On the Poson Poya the elders keep sil while the young climb the steps: the precepts are taken early, and the day is spent in the quiet of the temple rather than in the crowds. The lesson of the day is the one the king learnt, that the teaching is received by understanding and not by force. Families who cannot travel to Mihintale keep it at the village temple, reading the account of the meeting aloud. It is also the Poya on which children are often first taken to take the precepts with their parents.

How it is kept#

The puja as a household does it, in order. Tick each step as it is done.

Keep ready

  • white clothes
  • fresh flowers
  • a lamp with coconut oil and wick
  • incense
  • a vessel of clean water
  • a mat for meditation

The steps

0 of 9 done

The ticks stay in this tab for today only; nothing leaves this device.

What is cooked#

The one meal before noon is often taken together at the temple from the dana the village brings; the Poson dansal feed the pilgrims on the roads through the afternoon and evening.

The hour#

Clock times for Friday, 18 June 2027 at Chennai

The day whose sunset the full-moon tithi covers, the evening the moon is seen full, and the second of the two when it covers two sunsets. That reproduces every Poya the government gazetted for 2024, 2025 and 2026. The traditional almanac counts the lunar days from a calculated new moon and can still name another day, so the temple notice is worth reading.

The main rite. The full moon by the local clock. The precepts are taken at the temple in the early morning and kept until dawn the next day; the one meal is finished before noon.

InstantTimeWhat it is
Sunset18:37the moment the sun goes down
Pradosha kala18:37 to 21:01the 2 h 24 min after sunset, the evening worship hour
Moonrise18:12the Moon rising at this place, the hour a moonrise vratam is broken

Sunrise 05:43, sunset 18:37, UTC+5.5. These are the instants the rule is read at, not the temple's own puja times, which every temple prints for itself.

The day itself

WhatWhenNote
TithiShukla Pournami from 04:35 until next day 06:14then Krishna Prathamai until 2 days later, 08:16
NakshatraJyeshtha until 23:41then Mula until 2 days later, 02:13
Rahu kaal10:33 to 12:10 (1 h 37 min)the eighth of the daylight left alone for a beginning
Yamaganda15:23 to 17:00 (1 h 37 min)the eighth ruled by Yama, also avoided
Gulika07:20 to 08:57 (1 h 37 min)the eighth of Saturn’s son; what is done in it is said to repeat
Abhijit11:44 to 12:36 (0 h 52 min)the midday muhurta, good for most things
Moonrise18:12moonset next day 05:41

For Friday, 18 June 2027 at Chennai. A time marked "previous day" or "next day" is on the clock of that day.

The fast#

Those who take sil at the temple keep the eight precepts for the day and the night: one meal before midday, nothing solid after it, and no music, ornament or high seat. Others keep the day meatless, and the sale of meat and liquor is closed across the island.

What is avoided#

No meat, fish or liquor is sold or served, and nothing is killed; the shops for them close across the island. Those on sil eat nothing solid after noon and leave aside music, dancing, perfume, ornaments and high or luxurious beds, and nobody quarrels or gossips on a Poya.

The name#

The same day, in every language that has a word for it

2 names
English
Poson Poya
සිංහල
පොසොන් පොහොය

Only the names actually in use are listed. A blank script is not an omission: the day may simply not be kept there, or be kept under a different festival's name.

Where the regions differ#

Sri Lanka keeps all twelve full moons as public holidays, which no other country does, and an intercalated month adds an Adhi Poya of the same name and gives the year thirteen. The Sinhala month names run one behind the Sanskrit ones, which is why the Kandy Esala Perahera ends on the Nikini Poya.

In other regions

Sri Lanka (the dates above)
Sri Lanka keeps the Poson Poya with sil at every temple and the pilgrimage at Mihintale and Anuradhapura.

The dates above are the Sri Lanka reckoning, because that is the calendar this key belongs to. Switch the tradition on the calendar page to see how another one dates the same day.

Greeting#

What is said to family and friends on the day

සුබ පොසොන් පොහොය දිනයක් වේවාSuba Poson pōya dinayak vēvā

Mantras#

The prayers said with the day. Each opens with its words and meaning.

A name without a link is a long reading, read in full from the family’s own copy or at the place of worship; the library prints the shorter prayers.

Fixing a day for it#

The muhurtham rules for a puja held alongside, whose day the family chooses

Poson Poya's own date is set by the rule in "The hour" above, and no muhurtham moves it. For a temple visit around it, whose day the family does choose, the finder below applies these rules.

A temple visit, or the first darshan at a new temple. No weekday is ruled out: Tuesday belongs to Murugan and the Amman, Saturday to Perumal and Sani, so the day usually follows the deity rather than the almanac. Ashtami and Chaturdasi are the two tithis held back for darshan, with the standing exceptions of Sivaratri on Krishna Chaturdasi and Kala Bhairava Ashtami, which are kept on those very days. Rahu kaal, Yamaganda and Gulika kaal are not scored here; the panchangam page prints them for the day you pick, and most families simply wait them out.

Find a day for temple visit →

Every date here is computed from the Sun and Moon for the place entered, by the rule printed beside it.

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A printed panchangam can differ by a day where an almanac reads a tithi at a different instant, and a family's own custom always comes first. Where the practice genuinely varies, the text says so rather than choosing for you.