मध्यग्रहणतश् चोर्ध्वम् इष्टनाडीर् विशोधयेत्। स्थित्यर्धान् मौक्षिकाच् छेषम् प्राग्वच् च्छेषम् तु मौक्षिके॥
If it be required to know the Koṭi &c. at a given time after the middle of the eclipse, subtract the Ghatikas (between the given time and the end of the eclipse) from the second Sthityardha; from the remainder find the Koṭi &c. as mentioned before. The obscured part found from the second Sthityardha is the portion of the disc yet in obscurity.
english translation