{"id":"vidhyamitra:city-day:erode:2021-01-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2021-01-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-01-09","date_display":"January 9, 2021 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":2021,"month":1,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459223.770833,"kali_year":5122,"ahargana":1870758.2708,"sun":{"sidereal_longitude":264.6326,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":211.2088,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":306.5762,"elapsed_within_tithi_degrees":6.5762},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":211.2088,"elapsed_within_degrees":11.2088},"yoga":{"number":9,"name":"Śūla","sum_longitude":115.8414},"karana":{"half_tithi_index":51,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2021,"month":1,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459223.770833,"ahargana":1870758.2708,"kali_year":5122,"ayanamsa_lahiri":24.1467,"grahas":{"sun":{"sidereal_longitude":264.84462499999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":209.736225,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false,"latitude":2.0424},"mars":{"sidereal_longitude":6.560225000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":276.515625,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":280.49102500000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"venus":{"sidereal_longitude":246.06582500000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":278.409625,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":58.2241,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":238.2241,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","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":2021,"month":1,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459223.770833,"kali_year":5122,"ahargana":1870758.2708,"sun":{"sidereal_longitude":264.6326,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":211.2088,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":26,"name":"Ekādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ekādaśī","elongation_degrees":306.5762,"elapsed_within_tithi_degrees":6.5762},"nakshatra":{"number":16,"name":"Viśākhā","pada":4,"moon_longitude":211.2088,"elapsed_within_degrees":11.2088},"yoga":{"number":9,"name":"Śūla","sum_longitude":115.8414},"karana":{"half_tithi_index":51,"name":"Bālava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.042,"elongation":53.424},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.042,"opposition_distance":126.576}},"eclipse_window_40days":[{"offset_days":-10,"type":"lunar","occurs":true,"moon_latitude":1.091,"opposition_distance":1.549}]},"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":"06:41","sunsetLocal":"18:11","solarNoonLocal":"12:26","dayLengthHours":11.500004239715878,"dayLengthDisplay":"11 Hours 30 Mins 00 Secs","nightLengthDisplay":"12 Hours 30 Mins 00 Secs","moonriseLocal":"02:59","moonsetLocal":"14:33","rahuKala":{"name":"Rāhu Kāla","start":"09:34","end":"11:00","startHours":9.562257112044005,"endHours":10.99975764200849,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:52","end":"15:19","startHours":13.87475870193746,"endHours":15.312259231901944,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:41","end":"08:07","startHours":6.6872560521150355,"endHours":8.12475658207952,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:22","end":"09:45","startHours":9.370590374715407,"endHours":9.753923849372603,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:10","end":"07:28","startHours":7.16642289543653,"endHours":7.473089675162287,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:03","end":"12:49","startHours":12.053924697315779,"endHours":12.82059164663017,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:09","end":"05:55","startHours":5.153922153486252,"endHours":5.920589102800644,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:44","end":"06:41","startHours":5.728922365472045,"endHours":6.6872560521150355,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:07","startHours":14.353925545258953,"endHours":15.120592494573344,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:59","end":"18:23","startHours":17.987260291830914,"endHours":18.387260291830913,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:11","end":"18:40","startHours":18.187260291830913,"endHours":18.666427135152407,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:56","end":"19:41","startHours":17.937260291830913,"endHours":19.687260291830913,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:03","end":"00:49","startHours":24.05392469731578,"endHours":24.82059164663017,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:41","end":"08:07","startHours":6.6872560521150355,"endHours":8.12475658207952,"quality":"inauspicious"},{"name":"Śubha","start":"08:07","end":"09:34","startHours":8.12475658207952,"endHours":9.562257112044005,"quality":"auspicious"},{"name":"Roga","start":"09:34","end":"11:00","startHours":9.562257112044005,"endHours":10.99975764200849,"quality":"inauspicious"},{"name":"Udveg","start":"11:00","end":"12:26","startHours":10.99975764200849,"endHours":12.437258171972974,"quality":"inauspicious"},{"name":"Chala","start":"12:26","end":"13:52","startHours":12.437258171972974,"endHours":13.87475870193746,"quality":"neutral"},{"name":"Labha","start":"13:52","end":"15:19","startHours":13.87475870193746,"endHours":15.312259231901944,"quality":"auspicious"},{"name":"Amṛta","start":"15:19","end":"16:45","startHours":15.312259231901944,"endHours":16.74975976186643,"quality":"auspicious"},{"name":"Kāla","start":"16:45","end":"18:11","startHours":16.74975976186643,"endHours":18.187260291830913,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:11","end":"19:45","startHours":18.187260291830913,"endHours":19.74975976186643,"quality":"auspicious"},{"name":"Amṛta","start":"19:45","end":"21:19","startHours":19.74975976186643,"endHours":21.312259231901944,"quality":"auspicious"},{"name":"Kāla","start":"21:19","end":"22:52","startHours":21.312259231901944,"endHours":22.87475870193746,"quality":"inauspicious"},{"name":"Śubha","start":"22:52","end":"00:26","startHours":22.87475870193746,"endHours":24.437258171972974,"quality":"auspicious"},{"name":"Roga","start":"00:26","end":"02:00","startHours":24.437258171972974,"endHours":25.99975764200849,"quality":"inauspicious"},{"name":"Udveg","start":"02:00","end":"03:34","startHours":25.99975764200849,"endHours":27.562257112044005,"quality":"inauspicious"},{"name":"Chala","start":"03:34","end":"05:07","startHours":27.562257112044005,"endHours":29.12475658207952,"quality":"neutral"},{"name":"Labha","start":"05:07","end":"06:41","startHours":29.12475658207952,"endHours":30.687256052115035,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:41","end":"07:41","startHours":6.6872560521150355,"endHours":7.6872560521150355,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:41","end":"08:41","startHours":7.6872560521150355,"endHours":8.687256052115035,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:41","end":"09:41","startHours":8.687256052115035,"endHours":9.687256052115035,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:41","end":"10:41","startHours":9.687256052115035,"endHours":10.687256052115035,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:41","end":"11:41","startHours":10.687256052115035,"endHours":11.687256052115035,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:41","end":"12:41","startHours":11.687256052115035,"endHours":12.687256052115035,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:41","end":"13:41","startHours":12.687256052115035,"endHours":13.687256052115035,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:41","end":"14:41","startHours":13.687256052115035,"endHours":14.687256052115035,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:41","end":"15:41","startHours":14.687256052115035,"endHours":15.687256052115035,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:41","end":"16:41","startHours":15.687256052115035,"endHours":16.687256052115035,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:41","end":"17:41","startHours":16.687256052115035,"endHours":17.687256052115035,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:41","end":"18:41","startHours":17.687256052115035,"endHours":18.687256052115035,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:41","end":"19:41","startHours":18.687256052115035,"endHours":19.687256052115035,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:41","end":"20:41","startHours":19.687256052115035,"endHours":20.687256052115035,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:41","end":"21:41","startHours":20.687256052115035,"endHours":21.687256052115035,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:41","end":"22:41","startHours":21.687256052115035,"endHours":22.687256052115035,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:41","end":"23:41","startHours":22.687256052115035,"endHours":23.687256052115035,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:41","end":"00:41","startHours":23.687256052115035,"endHours":24.687256052115035,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:41","end":"01:41","startHours":24.687256052115035,"endHours":25.687256052115035,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:41","end":"02:41","startHours":25.687256052115035,"endHours":26.687256052115035,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:41","end":"03:41","startHours":26.687256052115035,"endHours":27.687256052115035,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:41","end":"04:41","startHours":27.687256052115035,"endHours":28.687256052115035,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:41","end":"05:41","startHours":28.687256052115035,"endHours":29.687256052115035,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:41","end":"06:41","startHours":29.687256052115035,"endHours":30.687256052115035,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"North","rahuVasa":"East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-22.091266615583383,"eotMinutes":-7.10429031837854,"ayanamsa":24.1467}},"calendars":{"vikram_samvat":2078,"vikram_samvatsara":"Ānanda","saka_samvat":1943,"saka_samvatsara":"Plava","bengali_samvat":1428,"malayalam_era":1197,"nanakshahi_year":552,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Ekādaśī · Vikram 2078 Ānanda · Śaka 1943 Plava"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"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":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 January 9, 2021 CE · Erode, Tamil Nadu · Vidhyamitra","description":"January 9, 2021 CE for Erode, Tamil Nadu: Kṛṣṇa Ekādaśī, sūryodaya 06:41, sūryāsta 18:11.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2021-01-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2021-01-09","sa":"https://sa.vidhyamitra.com/city/erode/2021-01-09","hi":"https://hi.vidhyamitra.com/city/erode/2021-01-09","x-default":"https://vidhyamitra.com/city/erode/2021-01-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T03:24:35.580Z","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":"2026-05-15T03:24:35.580Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T03:24:35.580Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}