{"id":"vidhyamitra:city-day:erode:1981-04-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1981-04-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-09","date_display":"April 9, 1981 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":1981,"month":4,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444703.770833,"kali_year":5082,"ahargana":1856238.2708,"sun":{"sidereal_longitude":355.71,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":51.1481,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.4382,"elapsed_within_tithi_degrees":7.4382},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4,"moon_longitude":51.1481,"elapsed_within_degrees":11.1481},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":46.8581},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1981,"month":4,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444703.770833,"ahargana":1856238.2708,"kali_year":5082,"ayanamsa_lahiri":23.5913,"grahas":{"sun":{"sidereal_longitude":355.518796,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":54.270396000000005,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false,"latitude":-3.7476},"mars":{"sidereal_longitude":354.35069599999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":337.712396,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":160.260496,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":356.226796,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":161.63919599999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.5636,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.5636,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":4,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444703.770833,"kali_year":5082,"ahargana":1856238.2708,"sun":{"sidereal_longitude":355.71,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":51.1481,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":55.4382,"elapsed_within_tithi_degrees":7.4382},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4,"moon_longitude":51.1481,"elapsed_within_degrees":11.1481},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":46.8581},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.748,"elongation":55.438},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.748,"opposition_distance":124.562}},"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":"06:12","sunsetLocal":"18:30","solarNoonLocal":"12:21","dayLengthHours":12.315559475231623,"dayLengthDisplay":"12 Hours 18 Mins 56 Secs","nightLengthDisplay":"11 Hours 41 Mins 04 Secs","moonriseLocal":"09:54","moonsetLocal":"22:38","rahuKala":{"name":"Rāhu Kāla","start":"13:53","end":"15:26","startHours":13.889903039124707,"endHours":15.42934797352866,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:12","end":"07:44","startHours":6.192678367104942,"endHours":7.732123301508895,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:16","end":"10:49","startHours":9.271568235912849,"endHours":10.811013170316802,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:04","end":"09:29","startHours":9.066308911325654,"endHours":9.476827560500041,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:42","end":"07:02","startHours":6.705826678572926,"endHours":7.034241597912436,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:46","startHours":11.939939455546368,"endHours":12.760976753895141,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:33","end":"05:22","startHours":4.550603770407392,"endHours":5.371641068756167,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:10","end":"06:12","startHours":5.166381744168973,"endHours":6.192678367104942,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:13","startHours":14.40305135059269,"endHours":15.224088648941466,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.308237842336567,"endHours":18.708237842336565,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:01","startHours":18.508237842336566,"endHours":19.02138615380455,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.258237842336566,"endHours":20.008237842336566,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:46","startHours":23.939939455546366,"endHours":24.760976753895143,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:12","end":"07:44","startHours":6.192678367104942,"endHours":7.732123301508895,"quality":"auspicious"},{"name":"Roga","start":"07:44","end":"09:16","startHours":7.732123301508895,"endHours":9.271568235912849,"quality":"inauspicious"},{"name":"Udveg","start":"09:16","end":"10:49","startHours":9.271568235912849,"endHours":10.811013170316802,"quality":"inauspicious"},{"name":"Chala","start":"10:49","end":"12:21","startHours":10.811013170316802,"endHours":12.350458104720754,"quality":"neutral"},{"name":"Labha","start":"12:21","end":"13:53","startHours":12.350458104720754,"endHours":13.889903039124707,"quality":"auspicious"},{"name":"Amṛta","start":"13:53","end":"15:26","startHours":13.889903039124707,"endHours":15.42934797352866,"quality":"auspicious"},{"name":"Kāla","start":"15:26","end":"16:58","startHours":15.42934797352866,"endHours":16.968792907932613,"quality":"inauspicious"},{"name":"Śubha","start":"16:58","end":"18:30","startHours":16.968792907932613,"endHours":18.508237842336566,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:30","end":"19:58","startHours":18.508237842336566,"endHours":19.968792907932613,"quality":"auspicious"},{"name":"Kāla","start":"19:58","end":"21:26","startHours":19.968792907932613,"endHours":21.42934797352866,"quality":"inauspicious"},{"name":"Śubha","start":"21:26","end":"22:53","startHours":21.42934797352866,"endHours":22.889903039124707,"quality":"auspicious"},{"name":"Roga","start":"22:53","end":"00:21","startHours":22.889903039124707,"endHours":24.350458104720754,"quality":"inauspicious"},{"name":"Udveg","start":"00:21","end":"01:49","startHours":24.350458104720754,"endHours":25.8110131703168,"quality":"inauspicious"},{"name":"Chala","start":"01:49","end":"03:16","startHours":25.8110131703168,"endHours":27.27156823591285,"quality":"neutral"},{"name":"Labha","start":"03:16","end":"04:44","startHours":27.27156823591285,"endHours":28.732123301508896,"quality":"auspicious"},{"name":"Amṛta","start":"04:44","end":"06:12","startHours":28.732123301508896,"endHours":30.192678367104943,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:12","end":"07:12","startHours":6.192678367104942,"endHours":7.192678367104942,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:12","end":"08:12","startHours":7.192678367104942,"endHours":8.192678367104943,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:12","end":"09:12","startHours":8.192678367104943,"endHours":9.192678367104943,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:12","end":"10:12","startHours":9.192678367104943,"endHours":10.192678367104943,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:12","end":"11:12","startHours":10.192678367104943,"endHours":11.192678367104943,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:12","end":"12:12","startHours":11.192678367104943,"endHours":12.192678367104943,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:12","end":"13:12","startHours":12.192678367104943,"endHours":13.192678367104943,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:12","end":"14:12","startHours":13.192678367104943,"endHours":14.192678367104943,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:12","end":"15:12","startHours":14.192678367104943,"endHours":15.192678367104943,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:12","end":"16:12","startHours":15.192678367104943,"endHours":16.192678367104943,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:12","end":"17:12","startHours":16.192678367104943,"endHours":17.192678367104943,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:12","end":"18:12","startHours":17.192678367104943,"endHours":18.192678367104943,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:12","end":"19:12","startHours":18.192678367104943,"endHours":19.192678367104943,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:12","end":"20:12","startHours":19.192678367104943,"endHours":20.192678367104943,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:12","end":"21:12","startHours":20.192678367104943,"endHours":21.192678367104943,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:12","end":"22:12","startHours":21.192678367104943,"endHours":22.192678367104943,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:12","end":"23:12","startHours":22.192678367104943,"endHours":23.192678367104943,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:12","end":"00:12","startHours":23.192678367104943,"endHours":24.192678367104943,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:12","end":"01:12","startHours":24.192678367104943,"endHours":25.192678367104943,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:12","end":"02:12","startHours":25.192678367104943,"endHours":26.192678367104943,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:12","end":"03:12","startHours":26.192678367104943,"endHours":27.192678367104943,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:12","end":"04:12","startHours":27.192678367104943,"endHours":28.192678367104943,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:12","end":"05:12","startHours":28.192678367104943,"endHours":29.192678367104943,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:12","end":"06:12","startHours":29.192678367104943,"endHours":30.192678367104943,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":7.481808705675457,"eotMinutes":-1.8962862832453116,"ayanamsa":23.5913}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"ramanuja-jayanti","name":"Rāmānujācārya Jayantī","name_sanskrit":"रामानुजाचार्य जयन्ती","tradition":"Vaishnava","associated_deity":"Rāmānujācārya (Viśiṣṭādvaita)","significance":"Birth of Rāmānujācārya; Viśiṣṭādvaita-pratiṣṭhāpaka. Caitra Śukla 5.","vrata":false,"detection":{"tithi_number":5,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":3},{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","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 April 9, 1981 CE · Erode, Tamil Nadu · Vidhyamitra","description":"April 9, 1981 CE for Erode, Tamil Nadu: Śukla Pañcamī, sūryodaya 06:12, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1981-04-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1981-04-09","sa":"https://sa.vidhyamitra.com/city/erode/1981-04-09","hi":"https://hi.vidhyamitra.com/city/erode/1981-04-09","x-default":"https://vidhyamitra.com/city/erode/1981-04-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T14:59:44.814Z","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":"2026-05-18T14:59:44.814Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T14:59:44.814Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}