{"id":"vidhyamitra:city-day:erode:1971-04-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1971-04-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-04-20","date_display":"April 20, 1971 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":1971,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441061.770833,"kali_year":5073,"ahargana":1852596.2708,"sun":{"sidereal_longitude":6.0427,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":298.3874,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":292.3447,"elapsed_within_tithi_degrees":4.3447},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.3874,"elapsed_within_degrees":5.0541},"yoga":{"number":23,"name":"Śubha","sum_longitude":304.4302},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"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":1971,"month":4,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441061.770833,"ahargana":1852596.2708,"kali_year":5073,"ayanamsa_lahiri":23.4521,"grahas":{"sun":{"sidereal_longitude":5.864147000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":295.13934700000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":-0.1684},"mars":{"sidereal_longitude":269.46764699999994,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":6.3508469999999875,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":222.580147,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":332.623747,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":29.374347,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":300.5343,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":120.5343,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"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":1971,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441061.770833,"kali_year":5073,"ahargana":1852596.2708,"sun":{"sidereal_longitude":6.0427,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":298.3874,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":292.3447,"elapsed_within_tithi_degrees":4.3447},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":298.3874,"elapsed_within_degrees":5.0541},"yoga":{"number":23,"name":"Śubha","sum_longitude":304.4302},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.168,"elongation":67.655},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.168,"opposition_distance":112.345}},"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":"06:06","sunsetLocal":"18:31","solarNoonLocal":"12:18","dayLengthHours":12.419903457777835,"dayLengthDisplay":"12 Hours 25 Mins 12 Secs","nightLengthDisplay":"11 Hours 34 Mins 48 Secs","moonriseLocal":"01:45","moonsetLocal":"13:25","rahuKala":{"name":"Rāhu Kāla","start":"15:24","end":"16:58","startHours":15.407699806683777,"endHours":16.960187738906008,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:12","end":"10:45","startHours":9.19774807779486,"endHours":10.75023601001709,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:18","end":"13:51","startHours":12.302723942239318,"endHours":13.85521187446155,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:59","end":"09:24","startHours":8.990749686831897,"endHours":9.404746468757825,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.610268190757811,"endHours":6.9414656162985535,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:43","startHours":11.88872716031339,"endHours":12.716720724165246,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:26","end":"05:16","startHours":4.43678508564669,"endHours":5.264778649498545,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:03","end":"06:06","startHours":5.0577802585355816,"endHours":6.092772213350401,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:12","startHours":14.372707851868956,"endHours":15.200701415720811,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.312675671128236,"endHours":18.712675671128235,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"19:02","startHours":18.512675671128235,"endHours":19.030171648535646,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.262675671128235,"endHours":20.012675671128235,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:43","startHours":23.88872716031339,"endHours":24.716720724165246,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:06","end":"07:39","startHours":6.092772213350401,"endHours":7.645260145572631,"quality":"inauspicious"},{"name":"Udveg","start":"07:39","end":"09:12","startHours":7.645260145572631,"endHours":9.19774807779486,"quality":"inauspicious"},{"name":"Chala","start":"09:12","end":"10:45","startHours":9.19774807779486,"endHours":10.75023601001709,"quality":"neutral"},{"name":"Labha","start":"10:45","end":"12:18","startHours":10.75023601001709,"endHours":12.302723942239318,"quality":"auspicious"},{"name":"Amṛta","start":"12:18","end":"13:51","startHours":12.302723942239318,"endHours":13.85521187446155,"quality":"auspicious"},{"name":"Kāla","start":"13:51","end":"15:24","startHours":13.85521187446155,"endHours":15.407699806683777,"quality":"inauspicious"},{"name":"Śubha","start":"15:24","end":"16:58","startHours":15.407699806683777,"endHours":16.960187738906008,"quality":"auspicious"},{"name":"Roga","start":"16:58","end":"18:31","startHours":16.960187738906008,"endHours":18.512675671128235,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:31","end":"19:58","startHours":18.512675671128235,"endHours":19.960187738906008,"quality":"inauspicious"},{"name":"Śubha","start":"19:58","end":"21:24","startHours":19.960187738906008,"endHours":21.407699806683777,"quality":"auspicious"},{"name":"Roga","start":"21:24","end":"22:51","startHours":21.407699806683777,"endHours":22.855211874461546,"quality":"inauspicious"},{"name":"Udveg","start":"22:51","end":"00:18","startHours":22.855211874461546,"endHours":24.302723942239318,"quality":"inauspicious"},{"name":"Chala","start":"00:18","end":"01:45","startHours":24.302723942239318,"endHours":25.75023601001709,"quality":"neutral"},{"name":"Labha","start":"01:45","end":"03:12","startHours":25.75023601001709,"endHours":27.19774807779486,"quality":"auspicious"},{"name":"Amṛta","start":"03:12","end":"04:39","startHours":27.19774807779486,"endHours":28.645260145572628,"quality":"auspicious"},{"name":"Kāla","start":"04:39","end":"06:06","startHours":28.645260145572628,"endHours":30.0927722133504,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:06","end":"07:06","startHours":6.092772213350401,"endHours":7.092772213350401,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:06","end":"08:06","startHours":7.092772213350401,"endHours":8.0927722133504,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:06","end":"09:06","startHours":8.0927722133504,"endHours":9.0927722133504,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:06","end":"10:06","startHours":9.0927722133504,"endHours":10.0927722133504,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:06","end":"11:06","startHours":10.0927722133504,"endHours":11.0927722133504,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:06","end":"12:06","startHours":11.0927722133504,"endHours":12.0927722133504,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:06","end":"13:06","startHours":12.0927722133504,"endHours":13.0927722133504,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:06","end":"14:06","startHours":13.0927722133504,"endHours":14.0927722133504,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:06","end":"15:06","startHours":14.0927722133504,"endHours":15.0927722133504,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:06","end":"16:06","startHours":15.0927722133504,"endHours":16.0927722133504,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:06","end":"17:06","startHours":16.0927722133504,"endHours":17.0927722133504,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:06","end":"18:06","startHours":17.0927722133504,"endHours":18.0927722133504,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:06","end":"19:06","startHours":18.0927722133504,"endHours":19.0927722133504,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:06","end":"20:06","startHours":19.0927722133504,"endHours":20.0927722133504,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:06","end":"21:06","startHours":20.0927722133504,"endHours":21.0927722133504,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:06","end":"22:06","startHours":21.0927722133504,"endHours":22.0927722133504,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:06","end":"23:06","startHours":22.0927722133504,"endHours":23.0927722133504,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:06","end":"00:06","startHours":23.0927722133504,"endHours":24.0927722133504,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:06","end":"01:06","startHours":24.0927722133504,"endHours":25.0927722133504,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:06","end":"02:06","startHours":25.0927722133504,"endHours":26.0927722133504,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:06","end":"03:06","startHours":26.0927722133504,"endHours":27.0927722133504,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:06","end":"04:06","startHours":27.0927722133504,"endHours":28.0927722133504,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:06","end":"05:06","startHours":28.0927722133504,"endHours":29.0927722133504,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:06","end":"06:06","startHours":29.0927722133504,"endHours":30.0927722133504,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":11.229630927082518,"eotMinutes":0.9677634656409275,"ayanamsa":23.4521}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Daśamī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[],"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 April 20, 1971 CE · Erode, Tamil Nadu · Vidhyamitra","description":"April 20, 1971 CE for Erode, Tamil Nadu: Kṛṣṇa Daśamī, sūryodaya 06:06, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1971-04-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1971-04-20","sa":"https://sa.vidhyamitra.com/city/erode/1971-04-20","hi":"https://hi.vidhyamitra.com/city/erode/1971-04-20","x-default":"https://vidhyamitra.com/city/erode/1971-04-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T11:22:39.522Z","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":"2026-05-31T11:22:39.522Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T11:22:39.522Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}