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[Anadhyayakala] 18. Patan - When a great king or a national leader dies, one should not perform *svadhyaya* until his cremation is completed. Or, one should perform *svadhyaya* gradually until another official takes over. 19. Rajavyudgraha - When there is a war between nearby kings, one should not perform *svadhyaya* for one day and night even after peace is restored. 20. Audarik Sharira - When a five-sense being dies within the *upaashraya*, one should not perform *svadhyaya* as long as the body remains there, and for 100 *haath* (a unit of measurement) if the lifeless body is lying there. These 10 reasons for not performing *svadhyaya* are related to the *audarik sharira*. 21.28 Four Mahotsav and Four Mahapratipada - Ashadh Purnima, Ashwin Purnima, Kartik Purnima, and Chaitra Purnima are the four *mahotsav*. The *pratipada* that comes after these *purnimas* is called *mahapratipada*. *Svadhyaya* is prohibited during these days. 29-32. Pratah Sayam Madhyahn and Ardharatri - One should not perform *svadhyaya* one *ghadi* (a unit of time) before and after sunrise, one *ghadi* before and after sunset, one *ghadi* before and after noon, and one *ghadi* before and after midnight.