त्रिंशत्काष्ठाः कलाः ॥ कZ_०२.२०.३३ ॥
triṃśatkāṣṭhāḥ kalāḥ
Thirty kāṣṭhās constitute one kalā (a larger time unit).
They prevent disputes and manipulation in duty rosters, service durations, time-based fees, and procedural deadlines.
1 kalā = 30 kāṣṭhā.