Muhurta Chintamani: The Five Sacred Limbs of Time (Panchanga) & Rahu Kaal Segments
Shubhashubha Prakaranam • Shloka 1–4 • Authored by Daivajna Acharya Rama (16th Century CE)
तिथिश्च वारं च नक्षत्रं योगः करणमेव च। पञ्चाङ्गस्य फलं ज्ञात्वा सर्वपापैः प्रमुच्यते॥ सूर्यवारादिकालेषु राहूणामष्टमांशकः। रव्यादि-शनिपर्यन्तं कालोऽयं त्याज्य उच्यते॥
tithiśca vāraṁ ca nakṣatraṁ yogaḥ karaṇameva ca | pañcāṅgasya phalaṁ jñātvā sarvapāpaiḥ pramucyate || sūryavārādikāleṣu rāhūṇāmaṣṭamāṁśakaḥ | ravyādi-śaniparyantaṁ kālo'yaṁ tyājya ucyate ||
तिथि, वार, नक्षत्र, योग और करण—ये काल के पांच अंग हैं। प्रतिदिन के दिवामान को आठ बराबर भागों में विभाजित किया जाता है, जिसमें प्रत्येक वार के नियत अष्टमांश को 'राहुकाल' माना जाता है तथा इसमें शुभ कार्यों का आरम्भ वर्जित होता है।
Panchanga comprises 5 cosmic measurements: Tithi (Lunar day = 12° Sun-Moon separation), Vaara (Solar weekday), Nakshatra (Lunar constellation = 13°20'), Yoga (Sun+Moon sum = 13°20'), and Karana (Half-Tithi = 6°). Each day is partitioned into 8 equal daytime segments, of which one specific segment is ruled by Rahu and strictly avoided for auspicious undertakings.
calculateTithi(), calculateNityaYoga(), calculateKarana(), and calculateVaara() implement these exact degree-based subdivisions with Swiss Ephemeris sidereal inputs.
Engine Module: panchangaEngine.ts & api/panchang/route.ts