Poya-Uposatha-Observance Day Calendar for 2013
Tibetan Buddhist Encyclopedia is now 14 years old
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| Month | January | February | March | April | May | June | July | August | September | October | November | December |
| Full moon | 26 |
25 |
26 |
25 | 24 | 23 |
22 | 20 | 19 |
18 |
17 | 16 |
| New moon | 12 |
10 | 12 | 10 | 10 | 12 | 8 | 7 | 5 | 5 | 3 | 3 |
Full Moon Poya Days: Uposatha 8 Rule Observance!
- January 26 Duruthu Poya day: Buddha first visit to Ceylon at Mahiyangana Stupa, which contains hair & collarbone relics.
- February 25 Navam Poya day: At this day Buddha ordains Sāriputta and MahāMoggallāna and later decides his Parinibbāna.
- March 26 Medin Poya day: Buddha visits parents home after Enlightenment, and ordains his son Rāhula, & half brother Nanda.
- April 25 Bak Poya day: Buddha's second visit to Ceylon, at Nagadipa close to Jaffna in the 5th year after his Enlightenment.
- May 24 Wesak: This Sacred Day celebrates the birth, Enlightenment, and passing away of the Blessed Buddha Gotama.
- June 23 Poson Poya day: Emperor Asoka's son, the Arahat Mahinda, introduces Buddhism to Ceylon in the 3rd century B.C.
- July 22 Esala Poya day: Buddha preaches 1st Sermon: Dhammacakkappavattana Sutta & performs the famous Twin Miracle.
- August 20 Nikini Poya day: Bhikkhus who did not enter the yearly rains retreat (Vassa) at Esala Poya, are allowed to enter now.
- September 19 Binara Poya day: Start of Bhikkhuni Sangha by the ordination of Queen Mahāpajāpatī; the Buddha's foster-mother.
- October 18 Vap Poya day: Marks the end of the Bhikkhu's three months rains retreat and begins Kathina month of giving robes.
- November 17 Il Poya day: Celebrates the Buddha Gotama's explanation of the next Buddha Metteyya & Breathing Meditation.
- December 16 Unduwap Poya: Arrival in Ceylon of a sapling of the sacred Bodhi-tree, brought by Arahat Theri Sanghamitta.
Keeping the 8 vows on Poya days is the Way to Divine Being at Death