Nyanaponika & Bodhi (1999), pp. 24, 307 n. 26. Nyanaponika & Bodhi refers to the quarter-moon days as "semi-Uposatha." Harvey (1990), p. 192, states that the uposatha is observed "at the full-moon, new-moon and, less importantly, two half-moon days." He goes on to state: "Except at times of major festivals, observance [uposatha] days are attended only by the more devout, who spend a day and night at their local monastery." Kariyawasam (1995), ch. 3, makes a similar observation in regards to modern Sinhalese society: "The popular practice is to observe [the Eight Precepts] on full-moon days, and, among a few devout lay Buddhists, on the other phases of the moon as well."
Bullitt (2005). Bullitt orders these special uposatha days in accordance with the Gregorian calendar, where Magha Uposatha thus starts the calendar year. However, in accordance with Asian lunar calendars, where the new year starts in mid April, Visakha Uposatha is the first special uposatha day of the year. The lunar calendar ordering of these days is maintained in this article for primarily two reasons: Visakha Uposatha is the most important of the uposatha festivals; and, ordering these uposatha days in this manner (i.e., Visakha Uposatha [Buddha Day], Asalha Uposatha [Dhamma Day], Magha Uposatha [Sangha Day]) celebrates the Triple Gem (Buddha, Dhamma, Sangha) in the order in which it is traditionally enumerated. Also see Kariyawasam, ch. 3, "Poya Days," where he identifies the relevance of all twelve full-moon uposatha days in contemporary Sinhala culture.
The three-line Ovada-Patimokkha Gatha (Pali: "Patimokkha Exhortation Verse") (translated in Dhammayut Order in the United States of America, 1994) includes the Buddha's famous dictum: "Not doing any evil, doing what is skillful, purifying one's own mind, this is the Buddha's teaching." This verse is familiar to many Westerners because it is rehashed in the widely popular Dhammapada, chapter XIV, verses 183-85 (Thanissaro, 1997a).
Watson 1988, pp. 13–4. Watson, Burton (1988), "Buddhism in the Poetry of Po Chü-i", The Eastern Buddhist, 21 (1): 1–22, JSTOR44361818
ntu.edu.tw
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Hung, Kuo & Chen 2002. Hung, Ming-jung; Kuo, Cheng-deng; Chen, Gau-yang (July 2002), 佛教的「過午不食」 [No-food-after-midday precept [sic] (Vikala Bhojana Veramani) in Buddhism], Buddhism and Science, 3 (2): 51–64, ISSN1607-2952, archived from the original on 4 December 2018, retrieved 5 December 2018
Hung, Kuo & Chen 2002. Hung, Ming-jung; Kuo, Cheng-deng; Chen, Gau-yang (July 2002), 佛教的「過午不食」 [No-food-after-midday precept [sic] (Vikala Bhojana Veramani) in Buddhism], Buddhism and Science, 3 (2): 51–64, ISSN1607-2952, archived from the original on 4 December 2018, retrieved 5 December 2018