Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
षड् वहित्रिहुताशांकतिथयश्चाधिमासकाः । तिथिक्षयायमार्थाक्षिद्व्यष्टव्योमशराश्विनः ॥ ७१ ॥
ṣaḍ vahitrihutāśāṃkatithayaścādhimāsakāḥ | tithikṣayāyamārthākṣidvyaṣṭavyomaśarāśvinaḥ || 71 ||
ଅଧିମାସକୁ ‘ଷଡ୍’ ଆଦି ସଂଖ୍ୟା-ଚିହ୍ନ ଏବଂ ‘ବହିତ୍ରୀ, ହୁତାଶ, ଅଙ୍କ, ତିଥି’ ପ୍ରଭୃତି ସଙ୍କେତ ଦ୍ୱାରା ବୁଝାଯାଏ। ସେହିପରି ତିଥି-କ୍ଷୟ ଓ ତିଥି-ଆୟାମ ମଧ୍ୟ ଉକ୍ତ ସଂଖ୍ୟା-ନିର୍ଦ୍ଦେଶରେ ନିର୍ଣ୍ଣୟ ହୁଏ।
Sanatkumara (in dialogue instruction to Narada on dharma/observances and technical reckoning)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It safeguards dharma in practice by ensuring vows and sacred observances are timed correctly; right time (kāla) is treated as an essential limb of righteous action.
Bhakti-based vratas and worship depend on proper tithi and month reckoning; the verse supports devotion by preventing mistakes in observing fasts and holy days during adhika-māsa or tithi anomalies.
Vedāṅga Jyotiṣa: technical calendrical computation—especially identifying adhimāsa (intercalary month), tithi-kṣaya (dropped tithi), and tithi-āyāma (extended tithi) using traditional coded numeral-terms.