Hayanaratna · by Balabhadra
Chapter 8 · Month Chart and Monthly Results
मासप्रवेशादिविचाराध्यायः
मासवेशे स्फुटा नाड्यस्तद्वारार्थमहर्गणः ॥संस्कृताब्दपवाराद्यस्सप्ततष्टोर्कतस्स्मृतः ॥ १९ ॥
At the month entry, the exact ghatikas (24-minute unit) are found. For its weekday, the day count is used. The corrected weekday and so on of the year lord is held as the answer. The count is cut by seven, from the Sun.
Simple meaning: At the month entry, find the exact ghatikas. For the weekday, cut the day count by seven and use the corrected year lord's weekday.
वर्तमानो वासरश्च सूक्ष्मं स्यान्मासवेशनम् ॥
This gives the current weekday and the month entry. Another method is taught, from the teachers' words.
मासप्रवेशकालार्कद्युपिण्डोत्थरवेः कलाः ॥
Another method: the minute gap between the two Suns, divided by the motion, gives ghatikas.
योज्याः शोध्या वर्षपालनाडीषु त्रैक्यसंस्कृताः ॥
Another method: add or subtract the corrected ghatikas to the year lord's ghatikas, then correct for longitude.