Hayanaratna · by Balabhadra
Chapter 5 · Year Lord and Muntha
वर्षेशादिविचाराध्यायः
वामनोपि ॥जन्मलग्नजराश्यादिराशिचक्रे प्रजायते ॥प्रत्यब्दम्मुथहा राशिरिति ॥
Vamana also says this. In the wheel of signs, the muntha (the point that moves one sign each year) comes up as one sign each year. It starts from the sign of the janma lagna (rising sign at birth).
Simple meaning: Muntha is one sign a year, starting from the sign of the birth lagna.
मणित्थोपि ॥
Finding the muntha: years gone divided by 12, remainder counted from the birth lagna.
ताजिकतिलकेपि ॥
Muntha enjoys one house of the chart each year.
एतत्स्पष्टङ्गणितपूर्वंकमुक्तन्ताजिकमुक्तावल्याम् ॥ ॥
Exact muntha: years gone plus one, divided by 12, remainder counted from the birth lagna. Each month it moves a twelfth of a house.