{"id":"vidhyamitra:city-day:erode:1971-10-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1971-10-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-10-04","date_display":"October 4, 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":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441228.770833,"kali_year":5073,"ahargana":1852763.2708,"sun":{"sidereal_longitude":166.0284,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":339.4613,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.4329,"elapsed_within_tithi_degrees":5.4329},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":339.4613,"elapsed_within_degrees":6.1279},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":145.4897},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":1971,"month":10,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441228.770833,"ahargana":1852763.2708,"kali_year":5073,"ayanamsa_lahiri":23.4584,"grahas":{"sun":{"sidereal_longitude":166.70526599999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"moon":{"sidereal_longitude":339.919766,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false,"latitude":3.3308},"mars":{"sidereal_longitude":292.638066,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":163.494366,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":220.73786599999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":177.120766,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":43.245566,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":291.6858,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":111.6858,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"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":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441228.770833,"kali_year":5073,"ahargana":1852763.2708,"sun":{"sidereal_longitude":166.0284,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":339.4613,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.4329,"elapsed_within_tithi_degrees":5.4329},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2,"moon_longitude":339.4613,"elapsed_within_degrees":6.1279},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":145.4897},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.331,"elongation":173.433},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.331,"opposition_distance":6.567}},"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":"06:07","sunsetLocal":"18:07","solarNoonLocal":"12:07","dayLengthHours":12.0057529231781,"dayLengthDisplay":"12 Hours 00 Mins 21 Secs","nightLengthDisplay":"11 Hours 59 Mins 39 Secs","moonriseLocal":"17:36","moonsetLocal":"05:43","rahuKala":{"name":"Rāhu Kāla","start":"07:37","end":"09:07","startHours":7.615078267346709,"endHours":9.11579738274397,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:37","end":"12:07","startHours":10.616516498141234,"endHours":12.117235613538497,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:37","end":"15:07","startHours":13.617954728935759,"endHours":15.11867384433302,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:19","startHours":8.915701500691004,"endHours":9.315893264796939,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.614598857081867,"endHours":6.9347522683666165,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:31","startHours":11.71704384943256,"endHours":12.517427377644434,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:19","startHours":4.513592095525699,"endHours":5.313975623737573,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:07","startHours":5.113879741684604,"endHours":6.114359151949446,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:55","startHours":14.11819443406818,"endHours":14.918577962280052,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:55","end":"18:19","startHours":17.920112075127548,"endHours":18.320112075127547,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:07","end":"18:37","startHours":18.120112075127548,"endHours":18.62035178025997,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:52","end":"19:37","startHours":17.870112075127548,"endHours":19.620112075127548,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:31","startHours":23.71704384943256,"endHours":24.517427377644434,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:07","end":"07:37","startHours":6.114359151949446,"endHours":7.615078267346709,"quality":"auspicious"},{"name":"Kāla","start":"07:37","end":"09:07","startHours":7.615078267346709,"endHours":9.11579738274397,"quality":"inauspicious"},{"name":"Śubha","start":"09:07","end":"10:37","startHours":9.11579738274397,"endHours":10.616516498141234,"quality":"auspicious"},{"name":"Roga","start":"10:37","end":"12:07","startHours":10.616516498141234,"endHours":12.117235613538497,"quality":"inauspicious"},{"name":"Udveg","start":"12:07","end":"13:37","startHours":12.117235613538497,"endHours":13.617954728935759,"quality":"inauspicious"},{"name":"Chala","start":"13:37","end":"15:07","startHours":13.617954728935759,"endHours":15.11867384433302,"quality":"neutral"},{"name":"Labha","start":"15:07","end":"16:37","startHours":15.11867384433302,"endHours":16.619392959730284,"quality":"auspicious"},{"name":"Amṛta","start":"16:37","end":"18:07","startHours":16.619392959730284,"endHours":18.120112075127548,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:07","end":"19:37","startHours":18.120112075127548,"endHours":19.619392959730284,"quality":"neutral"},{"name":"Labha","start":"19:37","end":"21:07","startHours":19.619392959730284,"endHours":21.118673844333024,"quality":"auspicious"},{"name":"Amṛta","start":"21:07","end":"22:37","startHours":21.118673844333024,"endHours":22.61795472893576,"quality":"auspicious"},{"name":"Kāla","start":"22:37","end":"00:07","startHours":22.61795472893576,"endHours":24.117235613538497,"quality":"inauspicious"},{"name":"Śubha","start":"00:07","end":"01:37","startHours":24.117235613538497,"endHours":25.616516498141234,"quality":"auspicious"},{"name":"Roga","start":"01:37","end":"03:07","startHours":25.616516498141234,"endHours":27.11579738274397,"quality":"inauspicious"},{"name":"Udveg","start":"03:07","end":"04:37","startHours":27.11579738274397,"endHours":28.61507826734671,"quality":"inauspicious"},{"name":"Chala","start":"04:37","end":"06:07","startHours":28.61507826734671,"endHours":30.114359151949447,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.114359151949446,"endHours":7.114359151949446,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.114359151949446,"endHours":8.114359151949447,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.114359151949447,"endHours":9.114359151949447,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.114359151949447,"endHours":10.114359151949447,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.114359151949447,"endHours":11.114359151949447,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.114359151949447,"endHours":12.114359151949447,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.114359151949447,"endHours":13.114359151949447,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.114359151949447,"endHours":14.114359151949447,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.114359151949447,"endHours":15.114359151949447,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.114359151949447,"endHours":16.114359151949447,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.114359151949447,"endHours":17.114359151949447,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.114359151949447,"endHours":18.114359151949447,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.114359151949447,"endHours":19.114359151949447,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.114359151949447,"endHours":20.114359151949447,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.114359151949447,"endHours":21.114359151949447,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.114359151949447,"endHours":22.114359151949447,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.114359151949447,"endHours":23.114359151949447,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.114359151949447,"endHours":24.114359151949447,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.114359151949447,"endHours":25.114359151949447,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.114359151949447,"endHours":26.114359151949447,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.114359151949447,"endHours":27.114359151949447,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.114359151949447,"endHours":28.114359151949447,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.114359151949447,"endHours":29.114359151949447,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.114359151949447,"endHours":30.114359151949447,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"drikRitu":"Śarad (Autumn) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-4.024561403372628,"eotMinutes":12.09706318769023,"ayanamsa":23.4584}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Pūrṇimā · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[{"id":"sharad-purnima","name":"Śarad Pūrṇimā / Kojāgarī Pūrṇimā","name_sanskrit":"शरद पूर्णिमा","tradition":"Vaishnava","associated_deity":"Krishna + Lakṣmī","significance":"Krishna's Mahā-rāsa with the gopīs at Vṛndāvana. Lakṣmī wakes (\"ko jāgartti?\")","vrata":true,"primary_observance":"Night-long jāgaraṇa; offering of pāyasa under moonlight","detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":2,"sources":["Bhāgavata 10.29-33"]},{"id":"rasa-purnima","name":"Rāsa Pūrṇimā (Vraja Mahā-Rāsa)","name_sanskrit":"रास पूर्णिमा","tradition":"Vaishnava","associated_deity":"Krishna + Gopīs","significance":"Krishna's Mahā-rāsa with the gopīs at Vraja (Bhāgavata 10.29-33). Same as Śarad Pūrṇimā but emphasized in Vraja tradition.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":2},{"id":"valmiki-jayanti","name":"Mahārṣi Vālmīki Jayantī","name_sanskrit":"महर्षि वाल्मीकि जयन्ती","tradition":"Pan-Hindu","associated_deity":"Maharṣi Vālmīki (ādi-kavi)","significance":"Composer of Vālmīki Rāmāyaṇa. Āśvina Pūrṇimā tradition.","vrata":false,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":3},{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","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 October 4, 1971 CE · Erode, Tamil Nadu · Vidhyamitra","description":"October 4, 1971 CE for Erode, Tamil Nadu: Śukla Pūrṇimā, sūryodaya 06:07, sūryāsta 18:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1971-10-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1971-10-04","sa":"https://sa.vidhyamitra.com/city/erode/1971-10-04","hi":"https://hi.vidhyamitra.com/city/erode/1971-10-04","x-default":"https://vidhyamitra.com/city/erode/1971-10-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T15:49:44.388Z","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":"2026-05-19T15:49:44.388Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T15:49:44.388Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}