{"id":"vidhyamitra:city-day:erode:1987-12-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1987-12-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1987-12-01","date_display":"December 1, 1987 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":1987,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447130.770833,"kali_year":5089,"ahargana":1858665.2708,"sun":{"sidereal_longitude":224.139,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":352.1789,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":128.0399,"elapsed_within_tithi_degrees":8.0399},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":352.1789,"elapsed_within_degrees":5.5122},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":216.3179},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"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":1987,"month":12,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2447130.770833,"ahargana":1858665.2708,"kali_year":5089,"ayanamsa_lahiri":23.6842,"grahas":{"sun":{"sidereal_longitude":224.61436600000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":352.942466,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false,"latitude":1.0273},"mars":{"sidereal_longitude":191.00176599999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":212.48726599999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":357.128366,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":250.18136600000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":237.81296599999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":338.9694,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":158.9694,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"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":1987,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2447130.770833,"kali_year":5089,"ahargana":1858665.2708,"sun":{"sidereal_longitude":224.139,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":352.1789,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":128.0399,"elapsed_within_tithi_degrees":8.0399},"nakshatra":{"number":27,"name":"Revatī","pada":2,"moon_longitude":352.1789,"elapsed_within_degrees":5.5122},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":216.3179},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.027,"elongation":128.04},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.027,"opposition_distance":51.96}},"eclipse_window_40days":[]},"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":"06:24","sunsetLocal":"17:54","solarNoonLocal":"12:09","dayLengthHours":11.512227562392583,"dayLengthDisplay":"11 Hours 30 Mins 44 Secs","nightLengthDisplay":"12 Hours 29 Mins 16 Secs","moonriseLocal":"14:35","moonsetLocal":"02:50","rahuKala":{"name":"Rāhu Kāla","start":"15:02","end":"16:28","startHours":15.028059380591472,"endHours":16.467087825890545,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:16","end":"10:43","startHours":9.27194559939518,"endHours":10.710974044694254,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:09","end":"13:35","startHours":12.150002489993327,"endHours":13.5890309352924,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:05","end":"09:28","startHours":9.08007514002197,"endHours":9.46381605876839,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:52","end":"07:11","startHours":6.8735648572300585,"endHours":7.180557592227194,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:32","startHours":11.766261571246908,"endHours":12.533743408739745,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:52","end":"05:38","startHours":4.8589250338113565,"endHours":5.626406871304195,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:26","end":"06:24","startHours":5.434536411930985,"endHours":6.393888708797034,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:50","startHours":14.068707083725423,"endHours":14.836188921218262,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:42","end":"18:06","startHours":17.706116271189618,"endHours":18.106116271189617,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:54","end":"18:23","startHours":17.906116271189617,"endHours":18.385792419622643,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:39","end":"19:24","startHours":17.656116271189617,"endHours":19.406116271189617,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:32","startHours":23.766261571246908,"endHours":24.533743408739745,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:24","end":"07:50","startHours":6.393888708797034,"endHours":7.832917154096107,"quality":"inauspicious"},{"name":"Udveg","start":"07:50","end":"09:16","startHours":7.832917154096107,"endHours":9.27194559939518,"quality":"inauspicious"},{"name":"Chala","start":"09:16","end":"10:43","startHours":9.27194559939518,"endHours":10.710974044694254,"quality":"neutral"},{"name":"Labha","start":"10:43","end":"12:09","startHours":10.710974044694254,"endHours":12.150002489993327,"quality":"auspicious"},{"name":"Amṛta","start":"12:09","end":"13:35","startHours":12.150002489993327,"endHours":13.5890309352924,"quality":"auspicious"},{"name":"Kāla","start":"13:35","end":"15:02","startHours":13.5890309352924,"endHours":15.028059380591472,"quality":"inauspicious"},{"name":"Śubha","start":"15:02","end":"16:28","startHours":15.028059380591472,"endHours":16.467087825890545,"quality":"auspicious"},{"name":"Roga","start":"16:28","end":"17:54","startHours":16.467087825890545,"endHours":17.906116271189617,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:54","end":"19:28","startHours":17.906116271189617,"endHours":19.467087825890545,"quality":"inauspicious"},{"name":"Śubha","start":"19:28","end":"21:02","startHours":19.467087825890545,"endHours":21.028059380591472,"quality":"auspicious"},{"name":"Roga","start":"21:02","end":"22:35","startHours":21.028059380591472,"endHours":22.5890309352924,"quality":"inauspicious"},{"name":"Udveg","start":"22:35","end":"00:09","startHours":22.5890309352924,"endHours":24.150002489993327,"quality":"inauspicious"},{"name":"Chala","start":"00:09","end":"01:43","startHours":24.150002489993327,"endHours":25.710974044694254,"quality":"neutral"},{"name":"Labha","start":"01:43","end":"03:16","startHours":25.710974044694254,"endHours":27.27194559939518,"quality":"auspicious"},{"name":"Amṛta","start":"03:16","end":"04:50","startHours":27.27194559939518,"endHours":28.83291715409611,"quality":"auspicious"},{"name":"Kāla","start":"04:50","end":"06:24","startHours":28.83291715409611,"endHours":30.393888708797036,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:24","end":"07:24","startHours":6.393888708797034,"endHours":7.393888708797034,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:24","end":"08:24","startHours":7.393888708797034,"endHours":8.393888708797034,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:24","end":"09:24","startHours":8.393888708797034,"endHours":9.393888708797034,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:24","end":"10:24","startHours":9.393888708797034,"endHours":10.393888708797034,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:24","end":"11:24","startHours":10.393888708797034,"endHours":11.393888708797034,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:24","end":"12:24","startHours":11.393888708797034,"endHours":12.393888708797034,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:24","end":"13:24","startHours":12.393888708797034,"endHours":13.393888708797034,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:24","end":"14:24","startHours":13.393888708797034,"endHours":14.393888708797034,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:24","end":"15:24","startHours":14.393888708797034,"endHours":15.393888708797034,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:24","end":"16:24","startHours":15.393888708797034,"endHours":16.393888708797036,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:24","end":"17:24","startHours":16.393888708797036,"endHours":17.393888708797036,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:24","end":"18:24","startHours":17.393888708797036,"endHours":18.393888708797036,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:24","end":"19:24","startHours":18.393888708797036,"endHours":19.393888708797036,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:24","end":"20:24","startHours":19.393888708797036,"endHours":20.393888708797036,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:24","end":"21:24","startHours":20.393888708797036,"endHours":21.393888708797036,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:24","end":"22:24","startHours":21.393888708797036,"endHours":22.393888708797036,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:24","end":"23:24","startHours":22.393888708797036,"endHours":23.393888708797036,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:24","end":"00:24","startHours":23.393888708797036,"endHours":24.393888708797036,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:24","end":"01:24","startHours":24.393888708797036,"endHours":25.393888708797036,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:24","end":"02:24","startHours":25.393888708797036,"endHours":26.393888708797036,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:24","end":"03:24","startHours":26.393888708797036,"endHours":27.393888708797036,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:24","end":"04:24","startHours":27.393888708797036,"endHours":28.393888708797036,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:24","end":"05:24","startHours":28.393888708797036,"endHours":29.393888708797036,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:24","end":"06:24","startHours":29.393888708797036,"endHours":30.393888708797036,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.68740507292997,"eotMinutes":10.131050600400467,"ayanamsa":23.6842}},"calendars":{"vikram_samvat":2044,"vikram_samvatsara":"Vikrama","saka_samvat":1909,"saka_samvatsara":"Prabhava","bengali_samvat":1394,"malayalam_era":1163,"nanakshahi_year":518,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Ekādaśī · Vikram 2044 Vikrama · Śaka 1909 Prabhava"},"festivals":[{"id":"gita-jayanti","name":"Gītā Jayantī (= Mokṣadā Ekādaśī)","name_sanskrit":"गीता जयन्ती","tradition":"Vaishnava","associated_deity":"Krishna (Bhagavad-Gītā speaker)","significance":"Day Bhagavad Gītā was delivered at Kurukṣetra (Mahābhārata Day 1).","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":1,"related_chart":"krishna","historical_anchor":{"event":"Bhagavad Gītā delivered at Kurukṣetra (Mahābhārata Day 1)","date_julian":"-3137-10-04","location":"Kurukṣetra"},"sources":["Bhagavad Gītā (Mahābhārata, Bhīṣma Parva)"]},{"id":"vaikuntha-ekadashi","name":"Vaikuṇṭha Ekādaśī","name_sanskrit":"वैकुण्ठ एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Most sacred Ekādaśī of the year; 'Vaikuṇṭha-dvāram udghaṭitam'.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":2},{"id":"mokshada-ekadashi","name":"Mokṣadā Ekādaśī (Gītā Jayantī)","name_sanskrit":"मोक्षदा एकादशी / गीता जयन्ती","tradition":"Vaishnava","associated_deity":"Krishna (Bhagavad Gītā delivery)","significance":"Day Bhagavad Gītā was delivered at Kurukṣetra.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":3},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5},{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"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":[]},"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 December 1, 1987 CE · Erode, Tamil Nadu · Vidhyamitra","description":"December 1, 1987 CE for Erode, Tamil Nadu: Śukla Ekādaśī, sūryodaya 06:24, sūryāsta 17:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1987-12-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1987-12-01","sa":"https://sa.vidhyamitra.com/city/erode/1987-12-01","hi":"https://hi.vidhyamitra.com/city/erode/1987-12-01","x-default":"https://vidhyamitra.com/city/erode/1987-12-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T03:46:05.339Z","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":"2026-05-18T03:46:05.339Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T03:46:05.339Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}