{"id":"vidhyamitra:day:1670-09-30:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1670-09-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1670-09-30","date_display":"September 30, 1670 CE","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":1670,"month":9,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2331287.770833,"kali_year":4772,"ahargana":1742822.2708,"sun":{"sidereal_longitude":167.8869,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":0.7174,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":192.8306,"elapsed_within_tithi_degrees":0.8306},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":0.7174,"elapsed_within_degrees":0.7174},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":168.6043},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1670,"month":9,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2331287.770833,"ahargana":1742822.2708,"kali_year":4772,"ayanamsa_lahiri":19.2536,"grahas":{"sun":{"sidereal_longitude":167.83782099999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"moon":{"sidereal_longitude":1.220220999999981,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":0.3002},"mars":{"sidereal_longitude":272.205021,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":188.279221,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":116.62312099999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":140.978121,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":316.79662099999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":356.889,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":176.889,"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":1670,"month":9,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2331287.770833,"kali_year":4772,"ahargana":1742822.2708,"sun":{"sidereal_longitude":167.8869,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":0.7174,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":192.8306,"elapsed_within_tithi_degrees":0.8306},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":0.7174,"elapsed_within_degrees":0.7174},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":168.6043},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.3,"elongation":167.169},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.3,"opposition_distance":12.831}},"eclipse_window_40days":[{"offset_days":-1,"type":"lunar","occurs":true,"moon_latitude":-0.838,"opposition_distance":0.697},{"offset_days":14,"type":"solar","occurs":true,"moon_latitude":-0.536,"elongation":1.229}]},"calendars":{"vikram_samvat":1727,"vikram_samvatsara":"Rudhirodgāri","saka_samvat":1592,"saka_samvatsara":"Sādhāraṇa","bengali_samvat":1077,"malayalam_era":846,"nanakshahi_year":201,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Dvitīyā · Vikram 1727 Rudhirodgāri · Śaka 1592 Sādhāraṇa"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5}]},"validity":{"eternal":false,"valid_from":"1670-09-30T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga September 30, 1670 CE · Vidhyamitra","description":"Vedic pañchāṅga for September 30, 1670 CE: Kṛṣṇa Dvitīyā · Aśvinī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1670-09-30","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1670-09-30","sa":"https://sa.vidhyamitra.com/day/1670-09-30","hi":"https://hi.vidhyamitra.com/day/1670-09-30","x-default":"https://vidhyamitra.com/day/1670-09-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-04T09:32:36.393Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-06-04T09:32:36.393Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}