When Is Dawn (aruna)? When Is Dawnrise (arunuggamana)?
Research on Dawn (aruna) and Dawnrise (arunuggamana) in the Pāli Texts, with Photographs and Scientific Explanations by Bhikkhu Ñāṇadassana
A G I F T - N O T F O R S A L E
First Edition c 2002, Bhikkhu Ñāṇadassana
Second Edition c 2013,
Bhikkhu Ñāṇadassana (Added `Quick Guide') This book may, as long as no changes are made to the original, be copied or reprinted for free distribution without prior permission. Otherwise all rights are reserved.
NOTE: The Pali Texts make a distinction between aruna and arunuggamana (lit. rise of aruna). Hereinafter, for clarity on the one hand, and for precision on the other, the standard English term `dawn' for aruna and the non-standard `dawnrise' for arunuggamana have been used. Modern Astronomy too makes distinctions by calling the whole period of morning twilight `dawn', and dividing it into astronomical dawn, nautical dawn, and civil dawn. The Pali aruõa (dawn) in this context occurs during astronomical and nautical dawn (when still dark), while aruõuggamana (dawnrise) occurs close to civil dawn (when there is light). Dawnrise marks the end of night (darkness) and the beginning of a new day (light), and is the actual `offence criterion' (āpatti-anga) for many Vinaya rules; but not aruna (dawn), as is often assumed, which occurs when darkness still prevails in the surroundings. Thus, it is very important to note that arunuggamana (dawnrise) is what one should be concerned with when it comes to the Vinaya rules and not aruna (dawn). These terms are often intuitively confused due to the common English usage.
Download: http://forum.sangham.net/index.php?action=tpmod;dl=item259