The Second Treatise on the Perfections – 2715
2. The vigilant Observance Day (
paṭijāgara-uposatha
).
The vigilant Observance Day (
paṭijāgara-uposatha
) means the eight ordinary
Observance Days observed with one additional day before and after each of
them.
Paṭi
here means “repeatedly;”
jāgara
means “waking.” Therefore,
paṭijāgara-sīla
may be interpreted as morality which repeatedly wakes up from
the slumber of the defilements. To calculate the number of days: The fifth
waxing Observance Day is preceded by the fourth waxing and followed by the
sixth waxing Observance Day; the eighth Observance Day is preceded by the
seventh waxing and followed by the ninth waxing Observance Day; the fortnight
waxing Observance Day is preceded by the thirteenth waxing Observance Day,
but there is not an Observance Day to follow; the full moon day is not preceded
by an Observance Day but is followed by the first waning Observance Day.
Hence, serially there are the fourth, fifth, sixth, seventh, eighth, ninth,
thirteenth and fourteenth waxing; the full moon and the first waning days. Thus
there are ten days in the waxing fortnight and ten days in the waning fortnight
of the month, making altogether eight ordinary Observance Days (
pakati-
uposatha
) and twelve vigilant Observance Days (
paṭijāgara-uposatha
) days in a
month.
3. The wonderful Observance Day (
pāṭihāriya-uposatha
).
The Observance Day which is more powerful than the vigilant (
paṭijāgara
) is
called wonderful (
pāṭihāriya
). The vigilant Observance Day has intervening
days in the waxing and waning fortnight. The wonderful Observance Day has no
such days, morality (
sīla
) being observed continuously.
If the laity wants to observe the wonderful Observance Day, they should observe
for the whole three months of the Rains Retreat (
Vassa
) without a break; but if
they cannot observe for the whole three months, they should do so for one
month, from the full moon of October (
Assayuja
) to the full moon of November
(
Kattikā
); but if they cannot observe for one month, they should do so for fifteen
days from the full moon to the new moon of October (
Assayuja
). This is stated
in the commentary to the Collection of the Numerical Discourses (
Aṅguttara-
nikāya
).
However, according to the commentary to the Discourse concerning Dhammika
(
Dhammika-sutta
, Snp 2.14), the Observance Day observed for five months of
July (
Āsāḷha
), August (
Sāvaṇa
), September (
Poṭṭhapāda
), October (
Assayuja
)