О том, что рождение, Пробуждение и Париниббана приходятся на полнолуние месяца Висакха, говорится в Аттхакатхе:
The reference of these can be found in the Pali commentaries, as in the
following examples: (There are still many more.)
Reference of 3 events related to the Buddha in Vesak:
1. Birth: ItA.I.133, Suppavaasasutta-a.t.thakathaa (Cmy. To
2. Enlightenment: DA.I.2-6 - (Brahmajaalasutta-a.t.thakathaa),
MA.II.182, SnA.II.391, JA.I.68, ItA.II.190, UdA.50, Sp.V.956.
3. Parinibbaana: Khuddakapaatha-a.t.thakathaa p. 89,
DhpA.I.86, Sp.I.4, ItA.II.190, VvA.165.
(The numbers are drawn mainly from the CSCD)
In many references, such as the MA, the Buddha's birth date is depicted
indirectly. It is said that the he will be in the womb for exactly 10
months and that his conception into mother's womb occurred on the full
moon day of the 8th month. Thus, also in this case, his birth date must
have fallen on the full moon day of the 6th month.http://groups.yahoo.com/group/Pali/message/11363