{"id":"vidhyamitra:city-day:erode:2021-01-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2021-01-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-01-11","date_display":"January 11, 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":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459225.770833,"kali_year":5122,"ahargana":1870760.2708,"sun":{"sidereal_longitude":266.6879,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":240.1161,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":333.4282,"elapsed_within_tithi_degrees":9.4282},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":240.1161,"elapsed_within_degrees":0.1161},"yoga":{"number":12,"name":"Dhruva","sum_longitude":146.804},"karana":{"half_tithi_index":55,"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":2021,"month":1,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459225.770833,"ahargana":1870760.2708,"kali_year":5122,"ayanamsa_lahiri":24.1468,"grahas":{"sun":{"sidereal_longitude":266.882748,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":238.46054800000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false,"latitude":-0.1567},"mars":{"sidereal_longitude":7.503247999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":279.782648,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":280.95714799999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"venus":{"sidereal_longitude":248.57404799999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":278.644148,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":58.1181,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":238.1181,"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":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459225.770833,"kali_year":5122,"ahargana":1870760.2708,"sun":{"sidereal_longitude":266.6879,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":240.1161,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":333.4282,"elapsed_within_tithi_degrees":9.4282},"nakshatra":{"number":19,"name":"Mūla","pada":1,"moon_longitude":240.1161,"elapsed_within_degrees":0.1161},"yoga":{"number":12,"name":"Dhruva","sum_longitude":146.804},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.157,"elongation":26.572},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.157,"opposition_distance":153.428}},"eclipse_window_40days":[{"offset_days":-12,"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":"06:42","sunsetLocal":"18:12","solarNoonLocal":"12:27","dayLengthHours":11.509061530360455,"dayLengthDisplay":"11 Hours 30 Mins 33 Secs","nightLengthDisplay":"12 Hours 29 Mins 27 Secs","moonriseLocal":"04:50","moonsetLocal":"16:16","rahuKala":{"name":"Rāhu Kāla","start":"08:08","end":"09:34","startHours":8.13439696336427,"endHours":9.57302965465933,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:01","end":"12:27","startHours":11.011662345954385,"endHours":12.450295037249443,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:53","end":"15:20","startHours":13.888927728544498,"endHours":15.327560419839557,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:23","end":"09:46","startHours":9.381211962486654,"endHours":9.764847346832003,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:11","end":"07:29","startHours":7.175308502500901,"endHours":7.48221680997718,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:50","startHours":12.066659652904095,"endHours":12.833930421594792,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:10","end":"05:56","startHours":5.16122273468782,"endHours":5.928493503378518,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:44","end":"06:42","startHours":5.736675811205844,"endHours":6.695764272069215,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:08","startHours":14.368471958976183,"endHours":15.13574272766688,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:00","end":"18:24","startHours":18.00482580242967,"endHours":18.40482580242967,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:12","end":"18:41","startHours":18.20482580242967,"endHours":18.684370032861356,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:57","end":"19:42","startHours":17.95482580242967,"endHours":19.70482580242967,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:50","startHours":24.066659652904093,"endHours":24.833930421594793,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:42","end":"08:08","startHours":6.695764272069215,"endHours":8.13439696336427,"quality":"auspicious"},{"name":"Kāla","start":"08:08","end":"09:34","startHours":8.13439696336427,"endHours":9.57302965465933,"quality":"inauspicious"},{"name":"Śubha","start":"09:34","end":"11:01","startHours":9.57302965465933,"endHours":11.011662345954385,"quality":"auspicious"},{"name":"Roga","start":"11:01","end":"12:27","startHours":11.011662345954385,"endHours":12.450295037249443,"quality":"inauspicious"},{"name":"Udveg","start":"12:27","end":"13:53","startHours":12.450295037249443,"endHours":13.888927728544498,"quality":"inauspicious"},{"name":"Chala","start":"13:53","end":"15:20","startHours":13.888927728544498,"endHours":15.327560419839557,"quality":"neutral"},{"name":"Labha","start":"15:20","end":"16:46","startHours":15.327560419839557,"endHours":16.766193111134612,"quality":"auspicious"},{"name":"Amṛta","start":"16:46","end":"18:12","startHours":16.766193111134612,"endHours":18.20482580242967,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:12","end":"19:46","startHours":18.20482580242967,"endHours":19.766193111134612,"quality":"neutral"},{"name":"Labha","start":"19:46","end":"21:20","startHours":19.766193111134612,"endHours":21.327560419839557,"quality":"auspicious"},{"name":"Amṛta","start":"21:20","end":"22:53","startHours":21.327560419839557,"endHours":22.888927728544502,"quality":"auspicious"},{"name":"Kāla","start":"22:53","end":"00:27","startHours":22.888927728544502,"endHours":24.450295037249443,"quality":"inauspicious"},{"name":"Śubha","start":"00:27","end":"02:01","startHours":24.450295037249443,"endHours":26.011662345954385,"quality":"auspicious"},{"name":"Roga","start":"02:01","end":"03:34","startHours":26.011662345954385,"endHours":27.57302965465933,"quality":"inauspicious"},{"name":"Udveg","start":"03:34","end":"05:08","startHours":27.57302965465933,"endHours":29.134396963364274,"quality":"inauspicious"},{"name":"Chala","start":"05:08","end":"06:42","startHours":29.134396963364274,"endHours":30.695764272069216,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.695764272069215,"endHours":7.695764272069215,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.695764272069215,"endHours":8.695764272069216,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.695764272069216,"endHours":9.695764272069216,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.695764272069216,"endHours":10.695764272069216,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.695764272069216,"endHours":11.695764272069216,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.695764272069216,"endHours":12.695764272069216,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.695764272069216,"endHours":13.695764272069216,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.695764272069216,"endHours":14.695764272069216,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.695764272069216,"endHours":15.695764272069216,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.695764272069216,"endHours":16.695764272069216,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.695764272069216,"endHours":17.695764272069216,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.695764272069216,"endHours":18.695764272069216,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.695764272069216,"endHours":19.695764272069216,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.695764272069216,"endHours":20.695764272069216,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.695764272069216,"endHours":21.695764272069216,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.695764272069216,"endHours":22.695764272069216,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.695764272069216,"endHours":23.695764272069216,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.695764272069216,"endHours":24.695764272069216,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.695764272069216,"endHours":25.695764272069216,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.695764272069216,"endHours":26.695764272069216,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.695764272069216,"endHours":27.695764272069216,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.695764272069216,"endHours":28.695764272069216,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.695764272069216,"endHours":29.695764272069216,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.695764272069216,"endHours":30.695764272069216,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"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":-21.792215599786037,"eotMinutes":-7.886502234966622,"ayanamsa":24.1468}},"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 Trayodaśī · 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":"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},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":[]},"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 11, 2021 CE · Erode, Tamil Nadu · Vidhyamitra","description":"January 11, 2021 CE for Erode, Tamil Nadu: Kṛṣṇa Trayodaśī, sūryodaya 06:42, sūryāsta 18:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2021-01-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2021-01-11","sa":"https://sa.vidhyamitra.com/city/erode/2021-01-11","hi":"https://hi.vidhyamitra.com/city/erode/2021-01-11","x-default":"https://vidhyamitra.com/city/erode/2021-01-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T01:49:49.606Z","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":"2026-05-15T01:49:49.606Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T01:49:49.606Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}