{"id":"vidhyamitra:city-day:erode:1986-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1986-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1986-10-20","date_display":"October 20, 1986 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":1986,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446723.770833,"kali_year":5088,"ahargana":1858258.2708,"sun":{"sidereal_longitude":181.9954,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":30.2294,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":208.2341,"elapsed_within_tithi_degrees":4.2341},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.2294,"elapsed_within_degrees":3.5628},"yoga":{"number":16,"name":"Siddhi","sum_longitude":212.2248},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1986,"month":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446723.770833,"ahargana":1858258.2708,"kali_year":5088,"ayanamsa_lahiri":23.6686,"grahas":{"sun":{"sidereal_longitude":182.687317,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":28.116917,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false,"latitude":2.2275},"mars":{"sidereal_longitude":282.74781699999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":207.24371700000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":320.729017,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":206.68131700000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":223.07191699999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":0.5342,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":180.5342,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"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":1986,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446723.770833,"kali_year":5088,"ahargana":1858258.2708,"sun":{"sidereal_longitude":181.9954,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":30.2294,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":208.2341,"elapsed_within_tithi_degrees":4.2341},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":30.2294,"elapsed_within_degrees":3.5628},"yoga":{"number":16,"name":"Siddhi","sum_longitude":212.2248},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.228,"elongation":151.766},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.228,"opposition_distance":28.234}},"eclipse_window_40days":[{"offset_days":-16,"type":"solar","occurs":true,"moon_latitude":1.033,"elongation":1.957}]},"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:08","sunsetLocal":"17:59","solarNoonLocal":"12:03","dayLengthHours":11.84020997451541,"dayLengthDisplay":"11 Hours 50 Mins 25 Secs","nightLengthDisplay":"12 Hours 09 Mins 35 Secs","moonriseLocal":"19:28","moonsetLocal":"08:03","rahuKala":{"name":"Rāhu Kāla","start":"07:37","end":"09:06","startHours":7.617160072152867,"endHours":9.097186318967292,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:35","end":"12:03","startHours":10.57721256578172,"endHours":12.057238812596147,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:32","end":"15:01","startHours":13.537265059410572,"endHours":15.017291306224998,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:18","startHours":8.899849486058702,"endHours":9.294523151875882,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.630475907609916,"endHours":6.94621484026366,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:40","end":"12:27","startHours":11.662565146778967,"endHours":12.451912478413327,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:34","end":"05:21","startHours":4.558439162069719,"endHours":5.3477864937040795,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:09","end":"06:08","startHours":5.1504496607954895,"endHours":6.137133825338441,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:49","startHours":14.030607141682047,"endHours":14.819954473316407,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.777343799853853,"endHours":18.17734379985385,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:28","startHours":17.977343799853852,"endHours":18.470685882125327,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.727343799853852,"endHours":19.477343799853852,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:40","end":"00:27","startHours":23.662565146778967,"endHours":24.451912478413327,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:08","end":"07:37","startHours":6.137133825338441,"endHours":7.617160072152867,"quality":"auspicious"},{"name":"Kāla","start":"07:37","end":"09:06","startHours":7.617160072152867,"endHours":9.097186318967292,"quality":"inauspicious"},{"name":"Śubha","start":"09:06","end":"10:35","startHours":9.097186318967292,"endHours":10.57721256578172,"quality":"auspicious"},{"name":"Roga","start":"10:35","end":"12:03","startHours":10.57721256578172,"endHours":12.057238812596147,"quality":"inauspicious"},{"name":"Udveg","start":"12:03","end":"13:32","startHours":12.057238812596147,"endHours":13.537265059410572,"quality":"inauspicious"},{"name":"Chala","start":"13:32","end":"15:01","startHours":13.537265059410572,"endHours":15.017291306224998,"quality":"neutral"},{"name":"Labha","start":"15:01","end":"16:30","startHours":15.017291306224998,"endHours":16.497317553039426,"quality":"auspicious"},{"name":"Amṛta","start":"16:30","end":"17:59","startHours":16.497317553039426,"endHours":17.977343799853852,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:59","end":"19:30","startHours":17.977343799853852,"endHours":19.497317553039426,"quality":"neutral"},{"name":"Labha","start":"19:30","end":"21:01","startHours":19.497317553039426,"endHours":21.017291306224998,"quality":"auspicious"},{"name":"Amṛta","start":"21:01","end":"22:32","startHours":21.017291306224998,"endHours":22.537265059410572,"quality":"auspicious"},{"name":"Kāla","start":"22:32","end":"00:03","startHours":22.537265059410572,"endHours":24.057238812596147,"quality":"inauspicious"},{"name":"Śubha","start":"00:03","end":"01:35","startHours":24.057238812596147,"endHours":25.57721256578172,"quality":"auspicious"},{"name":"Roga","start":"01:35","end":"03:06","startHours":25.57721256578172,"endHours":27.097186318967296,"quality":"inauspicious"},{"name":"Udveg","start":"03:06","end":"04:37","startHours":27.097186318967296,"endHours":28.617160072152867,"quality":"inauspicious"},{"name":"Chala","start":"04:37","end":"06:08","startHours":28.617160072152867,"endHours":30.13713382533844,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.137133825338441,"endHours":7.137133825338441,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.137133825338441,"endHours":8.137133825338442,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.137133825338442,"endHours":9.137133825338442,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.137133825338442,"endHours":10.137133825338442,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.137133825338442,"endHours":11.137133825338442,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.137133825338442,"endHours":12.137133825338442,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.137133825338442,"endHours":13.137133825338442,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.137133825338442,"endHours":14.137133825338442,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.137133825338442,"endHours":15.137133825338442,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.137133825338442,"endHours":16.13713382533844,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.13713382533844,"endHours":17.13713382533844,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.13713382533844,"endHours":18.13713382533844,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.13713382533844,"endHours":19.13713382533844,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.13713382533844,"endHours":20.13713382533844,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.13713382533844,"endHours":21.13713382533844,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.13713382533844,"endHours":22.13713382533844,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.13713382533844,"endHours":23.13713382533844,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.13713382533844,"endHours":24.13713382533844,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.13713382533844,"endHours":25.13713382533844,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.13713382533844,"endHours":26.13713382533844,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.13713382533844,"endHours":27.13713382533844,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.13713382533844,"endHours":28.13713382533844,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.13713382533844,"endHours":29.13713382533844,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.13713382533844,"endHours":30.13713382533844,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"drikRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-10.170133891652288,"eotMinutes":15.696871244231174,"ayanamsa":23.6686}},"calendars":{"vikram_samvat":2043,"vikram_samvatsara":"Pramāthi","saka_samvat":1908,"saka_samvatsara":"Akṣaya","bengali_samvat":1393,"malayalam_era":1162,"nanakshahi_year":517,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Tṛtīyā · Vikram 2043 Pramāthi · Śaka 1908 Akṣaya"},"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"erode"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 20, 1986 CE · Erode, Tamil Nadu · Vidhyamitra","description":"October 20, 1986 CE for Erode, Tamil Nadu: Kṛṣṇa Tṛtīyā, sūryodaya 06:08, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1986-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1986-10-20","sa":"https://sa.vidhyamitra.com/city/erode/1986-10-20","hi":"https://hi.vidhyamitra.com/city/erode/1986-10-20","x-default":"https://vidhyamitra.com/city/erode/1986-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T16:22:09.754Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-19T16:22:09.754Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T16:22:09.754Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}