{"id":"vidhyamitra:day:1785-10-18:en","page_class":"VM-1-day","url":"https://vidhyamitra.com/day/1785-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1785-10-18","date_display":"October 18, 1785 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":1785,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2373308.770833,"kali_year":4887,"ahargana":1784843.2708,"sun":{"sidereal_longitude":183.9993,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":4.8576,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":180.8583,"elapsed_within_tithi_degrees":0.8583},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":4.8576,"elapsed_within_degrees":4.8576},"yoga":{"number":15,"name":"Vajra","sum_longitude":188.8569},"karana":{"half_tithi_index":30,"name":"Bālava"},"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":1785,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2373308.770833,"ahargana":1784843.2708,"kali_year":4887,"ayanamsa_lahiri":20.8608,"grahas":{"sun":{"sidereal_longitude":184.20300999999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":4.3775099999999725,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false,"latitude":4.3348},"mars":{"sidereal_longitude":57.482410000000016,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":171.90011000000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":349.42691,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":150.94221,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":280.93661,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":290.4142,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":110.4142,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1785,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2373308.770833,"kali_year":4887,"ahargana":1784843.2708,"sun":{"sidereal_longitude":183.9993,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":4.8576,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":180.8583,"elapsed_within_tithi_degrees":0.8583},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":4.8576,"elapsed_within_degrees":4.8576},"yoga":{"number":15,"name":"Vajra","sum_longitude":188.8569},"karana":{"half_tithi_index":30,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.335,"elongation":179.142},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.335,"opposition_distance":0.858}},"eclipse_window_40days":[]},"calendars":{"vikram_samvat":1842,"vikram_samvatsara":"Kālayukta","saka_samvat":1707,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1192,"malayalam_era":961,"nanakshahi_year":316,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Pratipada · Vikram 1842 Kālayukta · Śaka 1707 Viśvāvasu"},"festivals":[{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5}],"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":"1785-10-18T00:00:00Z"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate; Vidhyamitra substrate"},"seo":{"title":"Pañchāṅga October 18, 1785 CE · Vidhyamitra","description":"Vedic pañchāṅga for October 18, 1785 CE: Kṛṣṇa Pratipada · Aśvinī.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/day/1785-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/day/1785-10-18","sa":"https://sa.vidhyamitra.com/day/1785-10-18","hi":"https://hi.vidhyamitra.com/day/1785-10-18","x-default":"https://vidhyamitra.com/day/1785-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-25T19:09:18.848Z","verification":{"type":"multi-marker","confidence":"canonical"}}],"meta":{"generated_at":"2026-05-25T19:09:18.848Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa"}}}