Disclaimer: This translation does not guarantee complete accuracy, please confirm with the original page text.
[Chapter on Unfavorable Time for Study] 3-4. Thunder and lightning are generally caused by the nature of the season. Therefore, the period from Ardra to Swati Nakshatra is not considered unfavorable for study. 5. If there is a loud thunderclap in the sky without clouds, or if there is thunderclap with clouds, then there is an unfavorable time for study for two Praharas. 6. In the Shukla Paksha of the month of Yupa, the combination of the evening glow and the moonlight on the first, second, and third days is called Yupa. During these days, one should not study from Prahara to night. 7. Yakshadeepta - Sometimes, a light appears in a direction, like lightning, but with a slight delay. This is called Yakshadeepta. Therefore, one should not study as long as the Yaksha-like light is visible in the sky. 8. Dhumika Krishna - The period from Kartik to Magh is the gestation period of clouds. During this time, a fine, water-like mist of smoky color falls. This is called Dhumika Krishna. One should not study as long as this mist falls. 9. Mihika Shweta - In winter, a fine, water-like mist of white color is called Mihika. One should not study as long as this falls. 10. Raj Udghāt - Due to wind, dust spreads all over the sky. One should not study as long as this dust remains spread. The above ten reasons are related to the sky and are unfavorable for study. Ten unfavorable reasons related to the material world are as follows: 11-12-13. Bones, flesh, and blood - If the bones, flesh, and blood of a five-sensed animal are visible, then there is an unfavorable time for study until these things are removed from there. The commentator considers the presence of these things within 60 hands to be unfavorable. Similarly, the presence of bones, flesh, and blood of a human being is also considered unfavorable. The difference is that the unfavorable time for these is up to 100 hands and for one day and night. The unfavorable time for a woman's menstrual period is three days. The unfavorable time for the birth of a boy and a girl is considered to be seven and eight days respectively. 14. Impurity - There is an unfavorable time for study until the excrement and urine are visible. 15. Cremation ground - The area around the cremation ground up to 100 hands on all sides is considered unfavorable for study. 16. Lunar eclipse - During a lunar eclipse, one should not study for eight Praharas for the lowest category, twelve Praharas for the middle category, and sixteen Praharas for the highest category. 17. Solar eclipse - During a solar eclipse, the unfavorable time for study is considered to be eight, twelve, and sixteen Praharas respectively.