{"id":"vidhyamitra:city-day:erode:2025-10-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2025-10-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2025-10-13","date_display":"October 13, 2025 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":2025,"month":10,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460961.770833,"kali_year":5127,"ahargana":1872496.2708,"sun":{"sidereal_longitude":174.948,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":72.5845,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":257.6365,"elapsed_within_tithi_degrees":5.6365},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.5845,"elapsed_within_degrees":5.9179},"yoga":{"number":19,"name":"Parigha","sum_longitude":247.5325},"karana":{"half_tithi_index":42,"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":2025,"month":10,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2460961.770833,"ahargana":1872496.2708,"kali_year":5127,"ayanamsa_lahiri":24.2132,"grahas":{"sun":{"sidereal_longitude":175.74802,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":76.57742000000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false,"latitude":4.3155},"mars":{"sidereal_longitude":199.56572000000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":194.68162000000007,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":89.42462,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"venus":{"sidereal_longitude":154.40571999999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":332.74541999999997,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":326.1365,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":146.1365,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":2025,"month":10,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460961.770833,"kali_year":5127,"ahargana":1872496.2708,"sun":{"sidereal_longitude":174.948,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":72.5845,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":257.6365,"elapsed_within_tithi_degrees":5.6365},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":72.5845,"elapsed_within_degrees":5.9179},"yoga":{"number":19,"name":"Parigha","sum_longitude":247.5325},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.315,"elongation":102.363},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.315,"opposition_distance":77.637}},"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":"06:08","sunsetLocal":"18:02","solarNoonLocal":"12:05","dayLengthHours":11.904345379464226,"dayLengthDisplay":"11 Hours 54 Mins 16 Secs","nightLengthDisplay":"12 Hours 05 Mins 44 Secs","moonriseLocal":"23:06","moonsetLocal":"11:50","rahuKala":{"name":"Rāhu Kāla","start":"07:37","end":"09:06","startHours":7.614016662566324,"endHours":9.102059834999352,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:35","end":"12:05","startHours":10.590103007432381,"endHours":12.07814617986541,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:34","end":"15:03","startHours":13.566189352298437,"endHours":15.054232524731466,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:18","startHours":8.903654078674949,"endHours":9.300465591323757,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.621987880944305,"endHours":6.9394370910633505,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:41","end":"12:28","startHours":11.681334667216602,"endHours":12.474957692514218,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:32","end":"05:20","startHours":4.538727439538066,"endHours":5.332350464835681,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:08","end":"06:08","startHours":5.133944708511277,"endHours":6.125973490133296,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:04","end":"14:51","startHours":14.062203743109446,"endHours":14.855826768407061,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:50","end":"18:14","startHours":17.830318869597523,"endHours":18.23031886959752,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:02","end":"18:32","startHours":18.030318869597522,"endHours":18.52633326040853,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:47","end":"19:32","startHours":17.780318869597522,"endHours":19.530318869597522,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:41","end":"00:28","startHours":23.681334667216603,"endHours":24.474957692514216,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:08","end":"07:37","startHours":6.125973490133296,"endHours":7.614016662566324,"quality":"auspicious"},{"name":"Kāla","start":"07:37","end":"09:06","startHours":7.614016662566324,"endHours":9.102059834999352,"quality":"inauspicious"},{"name":"Śubha","start":"09:06","end":"10:35","startHours":9.102059834999352,"endHours":10.590103007432381,"quality":"auspicious"},{"name":"Roga","start":"10:35","end":"12:05","startHours":10.590103007432381,"endHours":12.07814617986541,"quality":"inauspicious"},{"name":"Udveg","start":"12:05","end":"13:34","startHours":12.07814617986541,"endHours":13.566189352298437,"quality":"inauspicious"},{"name":"Chala","start":"13:34","end":"15:03","startHours":13.566189352298437,"endHours":15.054232524731466,"quality":"neutral"},{"name":"Labha","start":"15:03","end":"16:33","startHours":15.054232524731466,"endHours":16.54227569716449,"quality":"auspicious"},{"name":"Amṛta","start":"16:33","end":"18:02","startHours":16.54227569716449,"endHours":18.030318869597522,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:02","end":"19:33","startHours":18.030318869597522,"endHours":19.542275697164495,"quality":"neutral"},{"name":"Labha","start":"19:33","end":"21:03","startHours":19.542275697164495,"endHours":21.054232524731464,"quality":"auspicious"},{"name":"Amṛta","start":"21:03","end":"22:34","startHours":21.054232524731464,"endHours":22.566189352298437,"quality":"auspicious"},{"name":"Kāla","start":"22:34","end":"00:05","startHours":22.566189352298437,"endHours":24.07814617986541,"quality":"inauspicious"},{"name":"Śubha","start":"00:05","end":"01:35","startHours":24.07814617986541,"endHours":25.590103007432383,"quality":"auspicious"},{"name":"Roga","start":"01:35","end":"03:06","startHours":25.590103007432383,"endHours":27.102059834999352,"quality":"inauspicious"},{"name":"Udveg","start":"03:06","end":"04:37","startHours":27.102059834999352,"endHours":28.614016662566325,"quality":"inauspicious"},{"name":"Chala","start":"04:37","end":"06:08","startHours":28.614016662566325,"endHours":30.125973490133298,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.125973490133296,"endHours":7.125973490133296,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.125973490133296,"endHours":8.125973490133296,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.125973490133296,"endHours":9.125973490133296,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.125973490133296,"endHours":10.125973490133296,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.125973490133296,"endHours":11.125973490133296,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.125973490133296,"endHours":12.125973490133296,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.125973490133296,"endHours":13.125973490133296,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.125973490133296,"endHours":14.125973490133296,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.125973490133296,"endHours":15.125973490133296,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.125973490133296,"endHours":16.125973490133298,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.125973490133298,"endHours":17.125973490133298,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.125973490133298,"endHours":18.125973490133298,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.125973490133298,"endHours":19.125973490133298,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.125973490133298,"endHours":20.125973490133298,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.125973490133298,"endHours":21.125973490133298,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.125973490133298,"endHours":22.125973490133298,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.125973490133298,"endHours":23.125973490133298,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.125973490133298,"endHours":24.125973490133298,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.125973490133298,"endHours":25.125973490133298,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.125973490133298,"endHours":26.125973490133298,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.125973490133298,"endHours":27.125973490133298,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.125973490133298,"endHours":28.125973490133298,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.125973490133298,"endHours":29.125973490133298,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.125973490133298,"endHours":30.125973490133298,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","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":-7.803697944250321,"eotMinutes":14.442429208075392,"ayanamsa":24.2132}},"calendars":{"vikram_samvat":2082,"vikram_samvatsara":"Kālayukta","saka_samvat":1947,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1432,"malayalam_era":1201,"nanakshahi_year":556,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Saptamī · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"festivals":[{"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":[]},"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 13, 2025 CE · Erode, Tamil Nadu · Vidhyamitra","description":"October 13, 2025 CE for Erode, Tamil Nadu: Kṛṣṇa Saptamī, sūryodaya 06:08, sūryāsta 18:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2025-10-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2025-10-13","sa":"https://sa.vidhyamitra.com/city/erode/2025-10-13","hi":"https://hi.vidhyamitra.com/city/erode/2025-10-13","x-default":"https://vidhyamitra.com/city/erode/2025-10-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T07:32:04.239Z","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":"2026-05-15T07:32:04.239Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T07:32:04.239Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}