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15. Smashan-Up to a distance of hundred yards in any direction from a cremation ground such studies are prohibited.
16. Chandra grahan-At the time of lunar eclipse such studies are prohibited for eight, twelve or sixteen hours.
17. Surya grahan–At the time of solar eclipse such studies are prohibited for eight, twelve or sixteen hours.
18. Patan-On the death of a king or some other nationally eminent person such studies are prohibited as long as he is not cremated. Even after that, the period of study is kept limited as long as his successor does not take over.
19. Raaj-vyudgraha-During a war between neighbouring states such studies are prohibited as long as peace does not prevail. Studies should be resumed only 24 hours after peace is established.
20. Audarik Sharira–In case a five sensed animal dies or is killed in an upashraya (place of stay for ascetics) such studies are prohibited as long as the dead body is not removed. This prohibition also applies if a dead body is lying within 100 yards of the place of stay.
21-28. Four Mahotsavas and four Mahapratipada-Ashadh, Ashvin, Kartik and Chaitra purnimas (the full moon days of these four months) are called great festival days. The days after these festival days are called Mahapratipada. On all these days such studies are prohibited.
29-32. Sandhya-During the twenty four minutes preceding and following the four junctions of parts of the day, viz. morning, noon, evening and midnight such studies are prohibited.
Studies of scriptures or other holy books should be done avoiding all these anadhyaya kaal (time inappropriate for studies).
निशीथ सूत्र
(368)
Nishith Sutra
