{"id":"vidhyamitra:city-day:erode:2171-10-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2171-10-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2171-10-17","date_display":"October 17, 2171 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":2171,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514290.770833,"kali_year":5273,"ahargana":1925825.2708,"sun":{"sidereal_longitude":176.1594,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":33.7279,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":217.5685,"elapsed_within_tithi_degrees":1.5685},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":33.7279,"elapsed_within_degrees":7.0613},"yoga":{"number":16,"name":"Siddhi","sum_longitude":209.8874},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2171,"month":10,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514290.770833,"ahargana":1925825.2708,"kali_year":5273,"ayanamsa_lahiri":26.2528,"grahas":{"sun":{"sidereal_longitude":177.31116099999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":31.228061000000025,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false,"latitude":1.028},"mars":{"sidereal_longitude":124.34896100000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":198.301061,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":179.67976099999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":202.80816099999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":314.611861,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":20.5094,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":200.5094,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","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":2171,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514290.770833,"kali_year":5273,"ahargana":1925825.2708,"sun":{"sidereal_longitude":176.1594,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":33.7279,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":217.5685,"elapsed_within_tithi_degrees":1.5685},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3,"moon_longitude":33.7279,"elapsed_within_degrees":7.0613},"yoga":{"number":16,"name":"Siddhi","sum_longitude":209.8874},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.028,"elongation":142.431},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.028,"opposition_distance":37.569}},"eclipse_window_40days":[{"offset_days":12,"type":"solar","occurs":true,"moon_latitude":1.009,"elongation":1.213}]},"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":"18:00","solarNoonLocal":"12:04","dayLengthHours":11.867965293787037,"dayLengthDisplay":"11 Hours 52 Mins 05 Secs","nightLengthDisplay":"12 Hours 07 Mins 55 Secs","moonriseLocal":"20:01","moonsetLocal":"08:38","rahuKala":{"name":"Rāhu Kāla","start":"13:33","end":"15:02","startHours":13.548558669022913,"endHours":15.032054330746295,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:08","end":"07:37","startHours":6.131080360406016,"endHours":7.614576022129396,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:06","end":"10:35","startHours":9.098071683852776,"endHours":10.581567345576154,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:18","startHours":8.900272262289658,"endHours":9.295871105415893,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.6255789143138095,"endHours":6.942057988814797,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:40","end":"12:28","startHours":11.6694641641733,"endHours":12.46066185042577,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:33","end":"05:20","startHours":4.548684987901078,"endHours":5.339882674153547,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:09","end":"06:08","startHours":5.14208325259043,"endHours":6.131080360406016,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:03","end":"14:50","startHours":14.043057222930706,"endHours":14.834254909183175,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.799045654193055,"endHours":18.199045654193053,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:30","startHours":17.999045654193054,"endHours":18.493544208100847,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.749045654193054,"endHours":19.499045654193054,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:40","end":"00:28","startHours":23.669464164173302,"endHours":24.46066185042577,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:08","end":"07:37","startHours":6.131080360406016,"endHours":7.614576022129396,"quality":"auspicious"},{"name":"Roga","start":"07:37","end":"09:06","startHours":7.614576022129396,"endHours":9.098071683852776,"quality":"inauspicious"},{"name":"Udveg","start":"09:06","end":"10:35","startHours":9.098071683852776,"endHours":10.581567345576154,"quality":"inauspicious"},{"name":"Chala","start":"10:35","end":"12:04","startHours":10.581567345576154,"endHours":12.065063007299536,"quality":"neutral"},{"name":"Labha","start":"12:04","end":"13:33","startHours":12.065063007299536,"endHours":13.548558669022913,"quality":"auspicious"},{"name":"Amṛta","start":"13:33","end":"15:02","startHours":13.548558669022913,"endHours":15.032054330746295,"quality":"auspicious"},{"name":"Kāla","start":"15:02","end":"16:31","startHours":15.032054330746295,"endHours":16.515549992469673,"quality":"inauspicious"},{"name":"Śubha","start":"16:31","end":"18:00","startHours":16.515549992469673,"endHours":17.999045654193054,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:00","end":"19:31","startHours":17.999045654193054,"endHours":19.515549992469673,"quality":"auspicious"},{"name":"Kāla","start":"19:31","end":"21:02","startHours":19.515549992469673,"endHours":21.032054330746295,"quality":"inauspicious"},{"name":"Śubha","start":"21:02","end":"22:33","startHours":21.032054330746295,"endHours":22.548558669022917,"quality":"auspicious"},{"name":"Roga","start":"22:33","end":"00:04","startHours":22.548558669022917,"endHours":24.065063007299536,"quality":"inauspicious"},{"name":"Udveg","start":"00:04","end":"01:35","startHours":24.065063007299536,"endHours":25.581567345576154,"quality":"inauspicious"},{"name":"Chala","start":"01:35","end":"03:06","startHours":25.581567345576154,"endHours":27.098071683852776,"quality":"neutral"},{"name":"Labha","start":"03:06","end":"04:37","startHours":27.098071683852776,"endHours":28.6145760221294,"quality":"auspicious"},{"name":"Amṛta","start":"04:37","end":"06:08","startHours":28.6145760221294,"endHours":30.131080360406017,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.131080360406016,"endHours":7.131080360406016,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.131080360406016,"endHours":8.131080360406017,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.131080360406017,"endHours":9.131080360406017,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.131080360406017,"endHours":10.131080360406017,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.131080360406017,"endHours":11.131080360406017,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.131080360406017,"endHours":12.131080360406017,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.131080360406017,"endHours":13.131080360406017,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.131080360406017,"endHours":14.131080360406017,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.131080360406017,"endHours":15.131080360406017,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.131080360406017,"endHours":16.131080360406017,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.131080360406017,"endHours":17.131080360406017,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.131080360406017,"endHours":18.131080360406017,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.131080360406017,"endHours":19.131080360406017,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.131080360406017,"endHours":20.131080360406017,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.131080360406017,"endHours":21.131080360406017,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.131080360406017,"endHours":22.131080360406017,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.131080360406017,"endHours":23.131080360406017,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.131080360406017,"endHours":24.131080360406017,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.131080360406017,"endHours":25.131080360406017,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.131080360406017,"endHours":26.131080360406017,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.131080360406017,"endHours":27.131080360406017,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.131080360406017,"endHours":28.131080360406017,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.131080360406017,"endHours":29.131080360406017,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.131080360406017,"endHours":30.131080360406017,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.149003957048214,"eotMinutes":15.227419562027912,"ayanamsa":26.2528}},"calendars":{"vikram_samvat":2228,"vikram_samvatsara":"Tāraṇa","saka_samvat":2093,"saka_samvatsara":"Prajāpati","bengali_samvat":1578,"malayalam_era":1347,"nanakshahi_year":702,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Caturthī · Vikram 2228 Tāraṇa · Śaka 2093 Prajāpati"},"festivals":[{"id":"karva-chauth","name":"Karvā Chauth","name_sanskrit":"करवा चौथ","tradition":"Pan-Hindu","associated_deity":"Pārvatī + Gaṇeśa + Chandra","significance":"North Indian wives' fast for husband's longevity. Kṛṣṇa Caturthī of Kārtika.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":2},{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","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 17, 2171 CE · Erode, Tamil Nadu · Vidhyamitra","description":"October 17, 2171 CE for Erode, Tamil Nadu: Kṛṣṇa Caturthī, sūryodaya 06:08, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2171-10-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2171-10-17","sa":"https://sa.vidhyamitra.com/city/erode/2171-10-17","hi":"https://hi.vidhyamitra.com/city/erode/2171-10-17","x-default":"https://vidhyamitra.com/city/erode/2171-10-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:43:59.564Z","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":"2026-05-31T09:43:59.564Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:43:59.564Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}