{"id":"vidhyamitra:city-day:erode:1971-08-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1971-08-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-08-13","date_display":"August 13, 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":8,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441176.770833,"kali_year":5073,"ahargana":1852711.2708,"sun":{"sidereal_longitude":115.666,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":17.7978,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":262.1318,"elapsed_within_tithi_degrees":10.1318},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.7978,"elapsed_within_degrees":4.4645},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":133.4638},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":8,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441176.770833,"ahargana":1852711.2708,"kali_year":5073,"ayanamsa_lahiri":23.4565,"grahas":{"sun":{"sidereal_longitude":116.19865300000004,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":20.736053000000027,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false,"latitude":4.4697},"mars":{"sidereal_longitude":293.1590530000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":137.61695299999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":214.44665299999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":112.55685300000005,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":42.232753,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":294.441,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":114.441,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1971,"month":8,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441176.770833,"kali_year":5073,"ahargana":1852711.2708,"sun":{"sidereal_longitude":115.666,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":17.7978,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":262.1318,"elapsed_within_tithi_degrees":10.1318},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.7978,"elapsed_within_degrees":4.4645},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":133.4638},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.47,"elongation":97.868},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.47,"opposition_distance":82.132}},"eclipse_window_40days":[{"offset_days":-6,"type":"lunar","occurs":true,"moon_latitude":-0.252,"opposition_distance":1.604},{"offset_days":8,"type":"solar","occurs":true,"moon_latitude":-0.93,"elongation":2.643}]},"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":"06:08","sunsetLocal":"18:39","solarNoonLocal":"12:24","dayLengthHours":12.525929215685856,"dayLengthDisplay":"12 Hours 31 Mins 33 Secs","nightLengthDisplay":"11 Hours 28 Mins 27 Secs","moonriseLocal":"23:46","moonsetLocal":"12:18","rahuKala":{"name":"Rāhu Kāla","start":"10:50","end":"12:24","startHours":10.829137527009525,"endHours":12.394878678970258,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:32","end":"17:06","startHours":15.526360982891722,"endHours":17.092102134852453,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:42","end":"09:16","startHours":7.697655223088062,"endHours":9.263396375048794,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:28","startHours":9.054630888120696,"endHours":9.472161861976891,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:39","end":"06:59","startHours":6.653827788447574,"endHours":6.98785256753253,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:49","startHours":11.977347705114063,"endHours":12.812409652826453,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:28","end":"05:18","startHours":4.461790175702549,"endHours":5.29685212341494,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:05","end":"06:08","startHours":5.0880866364868425,"endHours":6.13191407112733,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:19","startHours":14.482533548251233,"endHours":15.317595495963623,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:27","end":"18:51","startHours":18.457843286813187,"endHours":18.857843286813186,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:39","end":"19:11","startHours":18.657843286813186,"endHours":19.17975700413343,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:24","end":"20:09","startHours":18.407843286813186,"endHours":20.157843286813186,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:49","startHours":23.977347705114063,"endHours":24.812409652826453,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:08","end":"07:42","startHours":6.13191407112733,"endHours":7.697655223088062,"quality":"neutral"},{"name":"Labha","start":"07:42","end":"09:16","startHours":7.697655223088062,"endHours":9.263396375048794,"quality":"auspicious"},{"name":"Amṛta","start":"09:16","end":"10:50","startHours":9.263396375048794,"endHours":10.829137527009525,"quality":"auspicious"},{"name":"Kāla","start":"10:50","end":"12:24","startHours":10.829137527009525,"endHours":12.394878678970258,"quality":"inauspicious"},{"name":"Śubha","start":"12:24","end":"13:58","startHours":12.394878678970258,"endHours":13.960619830930991,"quality":"auspicious"},{"name":"Roga","start":"13:58","end":"15:32","startHours":13.960619830930991,"endHours":15.526360982891722,"quality":"inauspicious"},{"name":"Udveg","start":"15:32","end":"17:06","startHours":15.526360982891722,"endHours":17.092102134852453,"quality":"inauspicious"},{"name":"Chala","start":"17:06","end":"18:39","startHours":17.092102134852453,"endHours":18.657843286813186,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:39","end":"20:06","startHours":18.657843286813186,"endHours":20.092102134852453,"quality":"inauspicious"},{"name":"Udveg","start":"20:06","end":"21:32","startHours":20.092102134852453,"endHours":21.526360982891724,"quality":"inauspicious"},{"name":"Chala","start":"21:32","end":"22:58","startHours":21.526360982891724,"endHours":22.96061983093099,"quality":"neutral"},{"name":"Labha","start":"22:58","end":"00:24","startHours":22.96061983093099,"endHours":24.394878678970258,"quality":"auspicious"},{"name":"Amṛta","start":"00:24","end":"01:50","startHours":24.394878678970258,"endHours":25.829137527009525,"quality":"auspicious"},{"name":"Kāla","start":"01:50","end":"03:16","startHours":25.829137527009525,"endHours":27.263396375048792,"quality":"inauspicious"},{"name":"Śubha","start":"03:16","end":"04:42","startHours":27.263396375048792,"endHours":28.697655223088063,"quality":"auspicious"},{"name":"Roga","start":"04:42","end":"06:08","startHours":28.697655223088063,"endHours":30.13191407112733,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.13191407112733,"endHours":7.13191407112733,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.13191407112733,"endHours":8.13191407112733,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.13191407112733,"endHours":9.13191407112733,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.13191407112733,"endHours":10.13191407112733,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.13191407112733,"endHours":11.13191407112733,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.13191407112733,"endHours":12.13191407112733,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.13191407112733,"endHours":13.13191407112733,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.13191407112733,"endHours":14.13191407112733,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.13191407112733,"endHours":15.13191407112733,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.13191407112733,"endHours":16.13191407112733,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.13191407112733,"endHours":17.13191407112733,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.13191407112733,"endHours":18.13191407112733,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.13191407112733,"endHours":19.13191407112733,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.13191407112733,"endHours":20.13191407112733,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.13191407112733,"endHours":21.13191407112733,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.13191407112733,"endHours":22.13191407112733,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.13191407112733,"endHours":23.13191407112733,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.13191407112733,"endHours":24.13191407112733,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.13191407112733,"endHours":25.13191407112733,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.13191407112733,"endHours":26.13191407112733,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.13191407112733,"endHours":27.13191407112733,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.13191407112733,"endHours":28.13191407112733,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.13191407112733,"endHours":29.13191407112733,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.13191407112733,"endHours":30.13191407112733,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":14.920980543910964,"eotMinutes":-4.561520738215509,"ayanamsa":23.4565}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Saptamī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 August 13, 1971 CE · Erode, Tamil Nadu · Vidhyamitra","description":"August 13, 1971 CE for Erode, Tamil Nadu: Kṛṣṇa Saptamī, sūryodaya 06:08, sūryāsta 18:39.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1971-08-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1971-08-13","sa":"https://sa.vidhyamitra.com/city/erode/1971-08-13","hi":"https://hi.vidhyamitra.com/city/erode/1971-08-13","x-default":"https://vidhyamitra.com/city/erode/1971-08-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T10:49:05.367Z","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":"2026-05-19T10:49:05.367Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T10:49:05.367Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}