{"id":"vidhyamitra:city-day:erode:2031-02-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2031-02-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2031-02-09","date_display":"February 9, 2031 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":2031,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462906.770833,"kali_year":5132,"ahargana":1874441.2708,"sun":{"sidereal_longitude":295.7767,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":133.7642,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.9875,"elapsed_within_tithi_degrees":5.9875},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":133.7642,"elapsed_within_degrees":0.4308},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":69.5409},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2031,"month":2,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462906.770833,"ahargana":1874441.2708,"kali_year":5132,"ayanamsa_lahiri":24.2875,"grahas":{"sun":{"sidereal_longitude":295.784907,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":133.19930699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false,"latitude":-4.4997},"mars":{"sidereal_longitude":195.91400700000008,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":286.9312070000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":238.72450700000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":321.994007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":37.61080700000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":223.081,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":43.081,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2031,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462906.770833,"kali_year":5132,"ahargana":1874441.2708,"sun":{"sidereal_longitude":295.7767,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":133.7642,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":197.9875,"elapsed_within_tithi_degrees":5.9875},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1,"moon_longitude":133.7642,"elapsed_within_degrees":0.4308},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":69.5409},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.5,"elongation":162.013},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.5,"opposition_distance":17.987}},"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":"06:42","sunsetLocal":"18:25","solarNoonLocal":"12:34","dayLengthHours":11.712558684961934,"dayLengthDisplay":"11 Hours 42 Mins 45 Secs","nightLengthDisplay":"12 Hours 17 Mins 15 Secs","moonriseLocal":"19:34","moonsetLocal":"07:53","rahuKala":{"name":"Rāhu Kāla","start":"16:57","end":"18:25","startHours":16.952784668903924,"endHours":18.416854504524164,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:34","end":"14:01","startHours":12.560575162043197,"endHours":14.02464499766344,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:29","end":"16:57","startHours":15.48871483328368,"endHours":16.952784668903924,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:50","startHours":9.437226179386682,"endHours":9.827644802218746,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:12","end":"07:30","startHours":7.1923190981023115,"endHours":7.5046539963679635,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:57","startHours":12.170156539211133,"endHours":12.95099378487526,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:09","end":"05:55","startHours":5.1426213282339726,"endHours":5.923458573898102,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:44","end":"06:42","startHours":5.72824926248207,"endHours":6.704295819562231,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:18","startHours":14.51266827620352,"endHours":15.29350552186765,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:13","end":"18:37","startHours":18.216854504524164,"endHours":18.616854504524163,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:25","end":"18:54","startHours":18.416854504524164,"endHours":18.904877783064244,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:10","end":"19:55","startHours":18.166854504524164,"endHours":19.916854504524164,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:57","startHours":24.17015653921113,"endHours":24.950993784875262,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:42","end":"08:10","startHours":6.704295819562231,"endHours":8.168365655182473,"quality":"inauspicious"},{"name":"Chala","start":"08:10","end":"09:38","startHours":8.168365655182473,"endHours":9.632435490802713,"quality":"neutral"},{"name":"Labha","start":"09:38","end":"11:06","startHours":9.632435490802713,"endHours":11.096505326422957,"quality":"auspicious"},{"name":"Amṛta","start":"11:06","end":"12:34","startHours":11.096505326422957,"endHours":12.560575162043197,"quality":"auspicious"},{"name":"Kāla","start":"12:34","end":"14:01","startHours":12.560575162043197,"endHours":14.02464499766344,"quality":"inauspicious"},{"name":"Śubha","start":"14:01","end":"15:29","startHours":14.02464499766344,"endHours":15.48871483328368,"quality":"auspicious"},{"name":"Roga","start":"15:29","end":"16:57","startHours":15.48871483328368,"endHours":16.952784668903924,"quality":"inauspicious"},{"name":"Udveg","start":"16:57","end":"18:25","startHours":16.952784668903924,"endHours":18.416854504524164,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:25","end":"19:57","startHours":18.416854504524164,"endHours":19.952784668903924,"quality":"auspicious"},{"name":"Roga","start":"19:57","end":"21:29","startHours":19.952784668903924,"endHours":21.48871483328368,"quality":"inauspicious"},{"name":"Udveg","start":"21:29","end":"23:01","startHours":21.48871483328368,"endHours":23.024644997663437,"quality":"inauspicious"},{"name":"Chala","start":"23:01","end":"00:34","startHours":23.024644997663437,"endHours":24.560575162043197,"quality":"neutral"},{"name":"Labha","start":"00:34","end":"02:06","startHours":24.560575162043197,"endHours":26.096505326422957,"quality":"auspicious"},{"name":"Amṛta","start":"02:06","end":"03:38","startHours":26.096505326422957,"endHours":27.632435490802713,"quality":"auspicious"},{"name":"Kāla","start":"03:38","end":"05:10","startHours":27.632435490802713,"endHours":29.16836565518247,"quality":"inauspicious"},{"name":"Śubha","start":"05:10","end":"06:42","startHours":29.16836565518247,"endHours":30.70429581956223,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.704295819562231,"endHours":7.704295819562231,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.704295819562231,"endHours":8.70429581956223,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.70429581956223,"endHours":9.70429581956223,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.70429581956223,"endHours":10.70429581956223,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.70429581956223,"endHours":11.70429581956223,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.70429581956223,"endHours":12.70429581956223,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.70429581956223,"endHours":13.70429581956223,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.70429581956223,"endHours":14.70429581956223,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.70429581956223,"endHours":15.70429581956223,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.70429581956223,"endHours":16.70429581956223,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.70429581956223,"endHours":17.70429581956223,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.70429581956223,"endHours":18.70429581956223,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.70429581956223,"endHours":19.70429581956223,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.70429581956223,"endHours":20.70429581956223,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.70429581956223,"endHours":21.70429581956223,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.70429581956223,"endHours":22.70429581956223,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.70429581956223,"endHours":23.70429581956223,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.70429581956223,"endHours":24.70429581956223,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.70429581956223,"endHours":25.70429581956223,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.70429581956223,"endHours":26.70429581956223,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.70429581956223,"endHours":27.70429581956223,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.70429581956223,"endHours":28.70429581956223,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.70429581956223,"endHours":29.70429581956223,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.70429581956223,"endHours":30.70429581956223,"planetary_lord":"Jupiter"}],"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":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-14.789718224227038,"eotMinutes":-14.503309722591807,"ayanamsa":24.2875}},"calendars":{"vikram_samvat":2088,"vikram_samvatsara":"Raktākṣī","saka_samvat":1953,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1438,"malayalam_era":1207,"nanakshahi_year":562,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Kṛṣṇa Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Kṛṣṇa Dvitīyā · Vikram 2088 Raktākṣī · Śaka 1953 Virodhakṛt"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 February 9, 2031 CE · Erode, Tamil Nadu · Vidhyamitra","description":"February 9, 2031 CE for Erode, Tamil Nadu: Kṛṣṇa Dvitīyā, sūryodaya 06:42, sūryāsta 18:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2031-02-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2031-02-09","sa":"https://sa.vidhyamitra.com/city/erode/2031-02-09","hi":"https://hi.vidhyamitra.com/city/erode/2031-02-09","x-default":"https://vidhyamitra.com/city/erode/2031-02-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T07:20:12.876Z","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":"2026-05-15T07:20:12.876Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T07:20:12.876Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}