{"id":"vidhyamitra:city-day:erode:1990-12-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1990-12-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1990-12-15","date_display":"December 15, 1990 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":1990,"month":12,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2448240.770833,"kali_year":5092,"ahargana":1859775.2708,"sun":{"sidereal_longitude":238.6997,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":214.6333,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":335.9336,"elapsed_within_tithi_degrees":11.9336},"nakshatra":{"number":17,"name":"Anurādhā","pada":1,"moon_longitude":214.6333,"elapsed_within_degrees":1.3},"yoga":{"number":7,"name":"Sukarma","sum_longitude":93.333},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1990,"month":12,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2448240.770833,"ahargana":1859775.2708,"kali_year":5092,"ayanamsa_lahiri":23.7266,"grahas":{"sun":{"sidereal_longitude":239.064756,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":215.96815600000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false,"latitude":-4.0948},"mars":{"sidereal_longitude":36.268456000000015,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":256.55175600000007,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":109.414356,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":249.86895600000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":269.859956,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":280.1563,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":100.1563,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"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":1990,"month":12,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2448240.770833,"kali_year":5092,"ahargana":1859775.2708,"sun":{"sidereal_longitude":238.6997,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":214.6333,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":335.9336,"elapsed_within_tithi_degrees":11.9336},"nakshatra":{"number":17,"name":"Anurādhā","pada":1,"moon_longitude":214.6333,"elapsed_within_degrees":1.3},"yoga":{"number":7,"name":"Sukarma","sum_longitude":93.333},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.095,"elongation":24.066},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.095,"opposition_distance":155.934}},"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":"06:31","sunsetLocal":"17:59","solarNoonLocal":"12:15","dayLengthHours":11.464863141461429,"dayLengthDisplay":"11 Hours 27 Mins 54 Secs","nightLengthDisplay":"12 Hours 32 Mins 06 Secs","moonriseLocal":"04:57","moonsetLocal":"16:28","rahuKala":{"name":"Rāhu Kāla","start":"09:23","end":"10:49","startHours":9.38300529740844,"endHours":10.81611319009112,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:41","end":"15:07","startHours":13.682328975456475,"endHours":15.115436868139154,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:31","end":"07:57","startHours":6.516789512043083,"endHours":7.949897404725761,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:12","end":"09:34","startHours":9.19192424505075,"endHours":9.57408634976613,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:00","end":"07:18","startHours":6.994492142937309,"endHours":7.300221826709614,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:38","startHours":11.867058978058417,"endHours":12.631383187489178,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:59","end":"05:45","startHours":4.988141093181559,"endHours":5.752465302612321,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:34","end":"06:31","startHours":5.561384250254631,"endHours":6.516789512043083,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:55","startHours":14.160031606350703,"endHours":14.924355815781466,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:47","end":"18:11","startHours":17.781652653504512,"endHours":18.18165265350451,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:59","end":"18:28","startHours":17.98165265350451,"endHours":18.459355284398736,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:44","end":"19:29","startHours":17.73165265350451,"endHours":19.48165265350451,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:38","startHours":23.867058978058417,"endHours":24.631383187489178,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:31","end":"07:57","startHours":6.516789512043083,"endHours":7.949897404725761,"quality":"inauspicious"},{"name":"Śubha","start":"07:57","end":"09:23","startHours":7.949897404725761,"endHours":9.38300529740844,"quality":"auspicious"},{"name":"Roga","start":"09:23","end":"10:49","startHours":9.38300529740844,"endHours":10.81611319009112,"quality":"inauspicious"},{"name":"Udveg","start":"10:49","end":"12:15","startHours":10.81611319009112,"endHours":12.249221082773797,"quality":"inauspicious"},{"name":"Chala","start":"12:15","end":"13:41","startHours":12.249221082773797,"endHours":13.682328975456475,"quality":"neutral"},{"name":"Labha","start":"13:41","end":"15:07","startHours":13.682328975456475,"endHours":15.115436868139154,"quality":"auspicious"},{"name":"Amṛta","start":"15:07","end":"16:33","startHours":15.115436868139154,"endHours":16.548544760821834,"quality":"auspicious"},{"name":"Kāla","start":"16:33","end":"17:59","startHours":16.548544760821834,"endHours":17.98165265350451,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:59","end":"19:33","startHours":17.98165265350451,"endHours":19.548544760821834,"quality":"auspicious"},{"name":"Amṛta","start":"19:33","end":"21:07","startHours":19.548544760821834,"endHours":21.115436868139156,"quality":"auspicious"},{"name":"Kāla","start":"21:07","end":"22:41","startHours":21.115436868139156,"endHours":22.682328975456475,"quality":"inauspicious"},{"name":"Śubha","start":"22:41","end":"00:15","startHours":22.682328975456475,"endHours":24.249221082773797,"quality":"auspicious"},{"name":"Roga","start":"00:15","end":"01:49","startHours":24.249221082773797,"endHours":25.81611319009112,"quality":"inauspicious"},{"name":"Udveg","start":"01:49","end":"03:23","startHours":25.81611319009112,"endHours":27.383005297408438,"quality":"inauspicious"},{"name":"Chala","start":"03:23","end":"04:57","startHours":27.383005297408438,"endHours":28.94989740472576,"quality":"neutral"},{"name":"Labha","start":"04:57","end":"06:31","startHours":28.94989740472576,"endHours":30.516789512043083,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:31","end":"07:31","startHours":6.516789512043083,"endHours":7.516789512043083,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:31","end":"08:31","startHours":7.516789512043083,"endHours":8.516789512043083,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:31","end":"09:31","startHours":8.516789512043083,"endHours":9.516789512043083,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:31","end":"10:31","startHours":9.516789512043083,"endHours":10.516789512043083,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:31","end":"11:31","startHours":10.516789512043083,"endHours":11.516789512043083,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:31","end":"12:31","startHours":11.516789512043083,"endHours":12.516789512043083,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:31","end":"13:31","startHours":12.516789512043083,"endHours":13.516789512043083,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:31","end":"14:31","startHours":13.516789512043083,"endHours":14.516789512043083,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:31","end":"15:31","startHours":14.516789512043083,"endHours":15.516789512043083,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:31","end":"16:31","startHours":15.516789512043083,"endHours":16.516789512043083,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:31","end":"17:31","startHours":16.516789512043083,"endHours":17.516789512043083,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:31","end":"18:31","startHours":17.516789512043083,"endHours":18.516789512043083,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:31","end":"19:31","startHours":18.516789512043083,"endHours":19.516789512043083,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:31","end":"20:31","startHours":19.516789512043083,"endHours":20.516789512043083,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:31","end":"21:31","startHours":20.516789512043083,"endHours":21.516789512043083,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:31","end":"22:31","startHours":21.516789512043083,"endHours":22.516789512043083,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:31","end":"23:31","startHours":22.516789512043083,"endHours":23.516789512043083,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:31","end":"00:31","startHours":23.516789512043083,"endHours":24.516789512043083,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:31","end":"01:31","startHours":24.516789512043083,"endHours":25.516789512043083,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:31","end":"02:31","startHours":25.516789512043083,"endHours":26.516789512043083,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:31","end":"03:31","startHours":26.516789512043083,"endHours":27.516789512043083,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:31","end":"04:31","startHours":27.516789512043083,"endHours":28.516789512043083,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:31","end":"05:31","startHours":28.516789512043083,"endHours":29.516789512043083,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:31","end":"06:31","startHours":29.516789512043083,"endHours":30.516789512043083,"planetary_lord":"Mercury"}],"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":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"East","anandadiYoga":{"name":"Mānasa","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":-23.240324610822537,"eotMinutes":4.177935033572184,"ayanamsa":23.7266}},"calendars":{"vikram_samvat":2047,"vikram_samvatsara":"Subhānu","saka_samvat":1912,"saka_samvatsara":"Pramoda","bengali_samvat":1397,"malayalam_era":1166,"nanakshahi_year":521,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Trayodaśī · Vikram 2047 Subhānu · Śaka 1912 Pramoda"},"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},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 15, 1990 CE · Erode, Tamil Nadu · Vidhyamitra","description":"December 15, 1990 CE for Erode, Tamil Nadu: Kṛṣṇa Trayodaśī, sūryodaya 06:31, sūryāsta 17:59.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1990-12-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1990-12-15","sa":"https://sa.vidhyamitra.com/city/erode/1990-12-15","hi":"https://hi.vidhyamitra.com/city/erode/1990-12-15","x-default":"https://vidhyamitra.com/city/erode/1990-12-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T02:23:46.452Z","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":"2026-05-18T02:23:46.452Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T02:23:46.452Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}