{"id":"vidhyamitra:day:-3148-09-18:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/-3148-09-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3148-09-18","date_display":"September 18, 3149 BCE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":-3148,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":571511.770833,"kali_year":-46,"ahargana":-16953.7292,"sun":{"sidereal_longitude":208.5869,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":171.0961,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":322.5092,"elapsed_within_tithi_degrees":10.5092},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":171.0961,"elapsed_within_degrees":11.0961},"yoga":{"number":2,"name":"Prīti","sum_longitude":19.683},"karana":{"half_tithi_index":53,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":-3148,"month":9,"day":18,"hour":6,"minute":30,"calendar":"julian"},"julian_day":571511.770833,"ahargana":-16953.7292,"kali_year":-46,"ayanamsa_lahiri":-48.0512,"grahas":{"sun":{"sidereal_longitude":208.5869,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":171.0961,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false,"latitude":0.563},"mars":{"sidereal_longitude":149.4725,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":190.1794,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":36.7575,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":204.1917,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":166.6309,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":358.2902,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":178.2902,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":-3148,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":571511.770833,"kali_year":-46,"ahargana":-16953.7292,"sun":{"sidereal_longitude":208.5869,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":171.0961,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":322.5092,"elapsed_within_tithi_degrees":10.5092},"nakshatra":{"number":13,"name":"Hasta","pada":4,"moon_longitude":171.0961,"elapsed_within_degrees":11.0961},"yoga":{"number":2,"name":"Prīti","sum_longitude":19.683},"karana":{"half_tithi_index":53,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.563,"elongation":37.491},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.563,"opposition_distance":142.509}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":-3091,"saka_samvat":-3226,"bengali_samvat":-3741,"malayalam_era":-3972,"nanakshahi_year":-4617,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Dvādaśī · Vikram -3091 undefined · Śaka -3226 undefined"},"festivals":[{"id":"govatsa-dwadashi","name":"Govatsa Dvādaśī (Vaccha Bāras)","name_sanskrit":"गोवत्स द्वादशी","tradition":"Vaishnava","associated_deity":"Krishna + Gomātā","significance":"Worship of cow + calf; pre-Diwali day.","vrata":true,"detection":{"tithi_number":27,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":4}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":true},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga September 18, 3149 BCE · Vidhyamitra","description":"Vedic pañchāṅga for September 18, 3149 BCE: Kṛṣṇa Dvādaśī · Hasta.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/-3148-09-18","hreflang_alternates":{"en":"https://vidhyamitra.com/day/-3148-09-18","sa":"https://sa.vidhyamitra.com/day/-3148-09-18","hi":"https://hi.vidhyamitra.com/day/-3148-09-18","x-default":"https://vidhyamitra.com/day/-3148-09-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T21:43:42.809Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-03T21:43:42.809Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}