{"id":"vidhyamitra:city-day:erode:2009-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2009-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2009-12-13","date_display":"December 13, 2009 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":2009,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455178.770833,"kali_year":5111,"ahargana":1866713.2708,"sun":{"sidereal_longitude":236.7342,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":196.0739,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":319.3397,"elapsed_within_tithi_degrees":7.3397},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":196.0739,"elapsed_within_degrees":9.4072},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":72.8081},"karana":{"half_tithi_index":53,"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":2009,"month":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455178.770833,"ahargana":1866713.2708,"kali_year":5111,"ayanamsa_lahiri":23.992,"grahas":{"sun":{"sidereal_longitude":237.16067399999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":197.17077400000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false,"latitude":-4.3749},"mars":{"sidereal_longitude":115.194774,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":256.33707400000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":299.09157400000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":229.86857400000008,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":159.53267400000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":272.5477,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":92.5477,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","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":2009,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455178.770833,"kali_year":5111,"ahargana":1866713.2708,"sun":{"sidereal_longitude":236.7342,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":196.0739,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":319.3397,"elapsed_within_tithi_degrees":7.3397},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":196.0739,"elapsed_within_degrees":9.4072},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":72.8081},"karana":{"half_tithi_index":53,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.375,"elongation":40.66},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.375,"opposition_distance":139.34}},"eclipse_window_40days":[{"offset_days":19,"type":"lunar","occurs":true,"moon_latitude":1.039,"opposition_distance":1.922}]},"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":"06:30","sunsetLocal":"17:58","solarNoonLocal":"12:14","dayLengthHours":11.467913324267826,"dayLengthDisplay":"11 Hours 28 Mins 04 Secs","nightLengthDisplay":"12 Hours 31 Mins 56 Secs","moonriseLocal":"03:44","moonsetLocal":"15:24","rahuKala":{"name":"Rāhu Kāla","start":"16:32","end":"17:58","startHours":16.534476659110133,"endHours":17.96796582464361,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:14","end":"13:40","startHours":12.234009162509697,"endHours":13.667498328043177,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:06","end":"16:32","startHours":15.100987493576653,"endHours":16.534476659110133,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:11","end":"09:33","startHours":9.175898942704944,"endHours":9.558162720180539,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:59","end":"07:17","startHours":6.977882222220277,"endHours":7.2836932442007525,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:37","startHours":11.851745385034102,"endHours":12.616272939985292,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:58","end":"05:44","startHours":4.970997390473408,"endHours":5.735524945424596,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:33","end":"06:30","startHours":5.544393056686799,"endHours":6.5000525003757845,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:55","startHours":14.145328049887668,"endHours":14.909855604838857,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:46","end":"18:10","startHours":17.76796582464361,"endHours":18.16796582464361,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:58","end":"18:27","startHours":17.96796582464361,"endHours":18.445795546488103,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:43","end":"19:28","startHours":17.71796582464361,"endHours":19.46796582464361,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:37","startHours":23.851745385034103,"endHours":24.61627293998529,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:30","end":"07:56","startHours":6.5000525003757845,"endHours":7.933541665909263,"quality":"inauspicious"},{"name":"Chala","start":"07:56","end":"09:22","startHours":7.933541665909263,"endHours":9.36703083144274,"quality":"neutral"},{"name":"Labha","start":"09:22","end":"10:48","startHours":9.36703083144274,"endHours":10.80051999697622,"quality":"auspicious"},{"name":"Amṛta","start":"10:48","end":"12:14","startHours":10.80051999697622,"endHours":12.234009162509697,"quality":"auspicious"},{"name":"Kāla","start":"12:14","end":"13:40","startHours":12.234009162509697,"endHours":13.667498328043177,"quality":"inauspicious"},{"name":"Śubha","start":"13:40","end":"15:06","startHours":13.667498328043177,"endHours":15.100987493576653,"quality":"auspicious"},{"name":"Roga","start":"15:06","end":"16:32","startHours":15.100987493576653,"endHours":16.534476659110133,"quality":"inauspicious"},{"name":"Udveg","start":"16:32","end":"17:58","startHours":16.534476659110133,"endHours":17.96796582464361,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:58","end":"19:32","startHours":17.96796582464361,"endHours":19.534476659110133,"quality":"auspicious"},{"name":"Roga","start":"19:32","end":"21:06","startHours":19.534476659110133,"endHours":21.100987493576653,"quality":"inauspicious"},{"name":"Udveg","start":"21:06","end":"22:40","startHours":21.100987493576653,"endHours":22.667498328043173,"quality":"inauspicious"},{"name":"Chala","start":"22:40","end":"00:14","startHours":22.667498328043173,"endHours":24.234009162509697,"quality":"neutral"},{"name":"Labha","start":"00:14","end":"01:48","startHours":24.234009162509697,"endHours":25.80051999697622,"quality":"auspicious"},{"name":"Amṛta","start":"01:48","end":"03:22","startHours":25.80051999697622,"endHours":27.36703083144274,"quality":"auspicious"},{"name":"Kāla","start":"03:22","end":"04:56","startHours":27.36703083144274,"endHours":28.93354166590926,"quality":"inauspicious"},{"name":"Śubha","start":"04:56","end":"06:30","startHours":28.93354166590926,"endHours":30.500052500375784,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:30","end":"07:30","startHours":6.5000525003757845,"endHours":7.5000525003757845,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:30","end":"08:30","startHours":7.5000525003757845,"endHours":8.500052500375784,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:30","end":"09:30","startHours":8.500052500375784,"endHours":9.500052500375784,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:30","end":"10:30","startHours":9.500052500375784,"endHours":10.500052500375784,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:30","end":"11:30","startHours":10.500052500375784,"endHours":11.500052500375784,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:30","end":"12:30","startHours":11.500052500375784,"endHours":12.500052500375784,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:30","end":"13:30","startHours":12.500052500375784,"endHours":13.500052500375784,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:30","end":"14:30","startHours":13.500052500375784,"endHours":14.500052500375784,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:30","end":"15:30","startHours":14.500052500375784,"endHours":15.500052500375784,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:30","end":"16:30","startHours":15.500052500375784,"endHours":16.500052500375784,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:30","end":"17:30","startHours":16.500052500375784,"endHours":17.500052500375784,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:30","end":"18:30","startHours":17.500052500375784,"endHours":18.500052500375784,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:30","end":"19:30","startHours":18.500052500375784,"endHours":19.500052500375784,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:30","end":"20:30","startHours":19.500052500375784,"endHours":20.500052500375784,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:30","end":"21:30","startHours":20.500052500375784,"endHours":21.500052500375784,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:30","end":"22:30","startHours":21.500052500375784,"endHours":22.500052500375784,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:30","end":"23:30","startHours":22.500052500375784,"endHours":23.500052500375784,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:30","end":"00:30","startHours":23.500052500375784,"endHours":24.500052500375784,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:30","end":"01:30","startHours":24.500052500375784,"endHours":25.500052500375784,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:30","end":"02:30","startHours":25.500052500375784,"endHours":26.500052500375784,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:30","end":"03:30","startHours":26.500052500375784,"endHours":27.500052500375784,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:30","end":"04:30","startHours":27.500052500375784,"endHours":28.500052500375784,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:30","end":"05:30","startHours":28.500052500375784,"endHours":29.500052500375784,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:30","end":"06:30","startHours":29.500052500375784,"endHours":30.500052500375784,"planetary_lord":"Jupiter"}],"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","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.141304446985046,"eotMinutes":5.090650249418121,"ayanamsa":23.992}},"calendars":{"vikram_samvat":2066,"vikram_samvatsara":"Śubhakṛt","saka_samvat":1931,"saka_samvatsara":"Virodhi","bengali_samvat":1416,"malayalam_era":1185,"nanakshahi_year":540,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Dvādaśī · Vikram 2066 Śubhakṛt · Śaka 1931 Virodhi"},"festivals":[{"id":"vrischika-sankranti","name":"Vṛścika Saṅkrānti","name_sanskrit":"वृश्चिक सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Scorpio.","vrata":false,"detection":{"sun_rashi":"Vṛścika"},"precedence":5}],"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 December 13, 2009 CE · Erode, Tamil Nadu · Vidhyamitra","description":"December 13, 2009 CE for Erode, Tamil Nadu: Kṛṣṇa Dvādaśī, sūryodaya 06:30, sūryāsta 17:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2009-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2009-12-13","sa":"https://sa.vidhyamitra.com/city/erode/2009-12-13","hi":"https://hi.vidhyamitra.com/city/erode/2009-12-13","x-default":"https://vidhyamitra.com/city/erode/2009-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T22:15:33.543Z","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":"2026-05-15T22:15:33.543Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T22:15:33.543Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}