{"id":"vidhyamitra:city-day:erode:2021-12-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2021-12-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2021-12-07","date_display":"December 7, 2021 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":2021,"month":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459555.770833,"kali_year":5123,"ahargana":1871090.2708,"sun":{"sidereal_longitude":230.4797,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":266.6062,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":36.1265,"elapsed_within_tithi_degrees":0.1265},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":266.6062,"elapsed_within_degrees":13.2729},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":137.0859},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2021,"month":12,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2459555.770833,"ahargana":1871090.2708,"kali_year":5123,"ayanamsa_lahiri":24.1594,"grahas":{"sun":{"sidereal_longitude":230.98634000000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":269.31683999999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false,"latitude":-3.234},"mars":{"sidereal_longitude":211.10154,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":235.01084000000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":302.05783999999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":269.1793399999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":true},"saturn":{"sidereal_longitude":285.34704,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":40.6331,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":220.6331,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":2021,"month":12,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2459555.770833,"kali_year":5123,"ahargana":1871090.2708,"sun":{"sidereal_longitude":230.4797,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":266.6062,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":36.1265,"elapsed_within_tithi_degrees":0.1265},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":266.6062,"elapsed_within_degrees":13.2729},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":137.0859},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.234,"elongation":36.127},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.234,"opposition_distance":143.873}},"eclipse_window_40days":[{"offset_days":-18,"type":"lunar","occurs":true,"moon_latitude":-0.942,"opposition_distance":2.637}]},"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":"06:27","sunsetLocal":"17:56","solarNoonLocal":"12:11","dayLengthHours":11.484238038064376,"dayLengthDisplay":"11 Hours 29 Mins 03 Secs","nightLengthDisplay":"12 Hours 30 Mins 57 Secs","moonriseLocal":"09:00","moonsetLocal":"20:29","rahuKala":{"name":"Rāhu Kāla","start":"15:04","end":"16:30","startHours":15.061184567460472,"endHours":16.49671432221852,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:19","end":"10:45","startHours":9.319065548428284,"endHours":10.754595303186331,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:11","end":"13:38","startHours":12.190125057944378,"endHours":13.625654812702425,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:08","end":"09:31","startHours":9.127661581127212,"endHours":9.510469515729358,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:56","end":"07:14","startHours":6.926515957164874,"endHours":7.232762304846591,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:34","startHours":11.807317123342232,"endHours":12.572932992546525,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:55","end":"05:41","startHours":4.916774300503608,"endHours":5.682390169707899,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:29","end":"06:27","startHours":5.490986202406827,"endHours":6.448006038912191,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:06","end":"14:52","startHours":14.104164730955109,"endHours":14.8697806001594,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:44","end":"18:08","startHours":17.732244076976567,"endHours":18.132244076976566,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:56","end":"18:25","startHours":17.932244076976566,"endHours":18.41075399522925,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:41","end":"19:26","startHours":17.682244076976566,"endHours":19.432244076976566,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:34","startHours":23.807317123342234,"endHours":24.572932992546523,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:27","end":"07:53","startHours":6.448006038912191,"endHours":7.883535793670238,"quality":"inauspicious"},{"name":"Udveg","start":"07:53","end":"09:19","startHours":7.883535793670238,"endHours":9.319065548428284,"quality":"inauspicious"},{"name":"Chala","start":"09:19","end":"10:45","startHours":9.319065548428284,"endHours":10.754595303186331,"quality":"neutral"},{"name":"Labha","start":"10:45","end":"12:11","startHours":10.754595303186331,"endHours":12.190125057944378,"quality":"auspicious"},{"name":"Amṛta","start":"12:11","end":"13:38","startHours":12.190125057944378,"endHours":13.625654812702425,"quality":"auspicious"},{"name":"Kāla","start":"13:38","end":"15:04","startHours":13.625654812702425,"endHours":15.061184567460472,"quality":"inauspicious"},{"name":"Śubha","start":"15:04","end":"16:30","startHours":15.061184567460472,"endHours":16.49671432221852,"quality":"auspicious"},{"name":"Roga","start":"16:30","end":"17:56","startHours":16.49671432221852,"endHours":17.932244076976566,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:56","end":"19:30","startHours":17.932244076976566,"endHours":19.49671432221852,"quality":"inauspicious"},{"name":"Śubha","start":"19:30","end":"21:04","startHours":19.49671432221852,"endHours":21.061184567460472,"quality":"auspicious"},{"name":"Roga","start":"21:04","end":"22:38","startHours":21.061184567460472,"endHours":22.625654812702425,"quality":"inauspicious"},{"name":"Udveg","start":"22:38","end":"00:11","startHours":22.625654812702425,"endHours":24.19012505794438,"quality":"inauspicious"},{"name":"Chala","start":"00:11","end":"01:45","startHours":24.19012505794438,"endHours":25.75459530318633,"quality":"neutral"},{"name":"Labha","start":"01:45","end":"03:19","startHours":25.75459530318633,"endHours":27.319065548428284,"quality":"auspicious"},{"name":"Amṛta","start":"03:19","end":"04:53","startHours":27.319065548428284,"endHours":28.883535793670237,"quality":"auspicious"},{"name":"Kāla","start":"04:53","end":"06:27","startHours":28.883535793670237,"endHours":30.44800603891219,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:27","end":"07:27","startHours":6.448006038912191,"endHours":7.448006038912191,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:27","end":"08:27","startHours":7.448006038912191,"endHours":8.44800603891219,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:27","end":"09:27","startHours":8.44800603891219,"endHours":9.44800603891219,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:27","end":"10:27","startHours":9.44800603891219,"endHours":10.44800603891219,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:27","end":"11:27","startHours":10.44800603891219,"endHours":11.44800603891219,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:27","end":"12:27","startHours":11.44800603891219,"endHours":12.44800603891219,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:27","end":"13:27","startHours":12.44800603891219,"endHours":13.44800603891219,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:27","end":"14:27","startHours":13.44800603891219,"endHours":14.44800603891219,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:27","end":"15:27","startHours":14.44800603891219,"endHours":15.44800603891219,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:27","end":"16:27","startHours":15.44800603891219,"endHours":16.44800603891219,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:27","end":"17:27","startHours":16.44800603891219,"endHours":17.44800603891219,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:27","end":"18:27","startHours":17.44800603891219,"endHours":18.44800603891219,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:27","end":"19:27","startHours":18.44800603891219,"endHours":19.44800603891219,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:27","end":"20:27","startHours":19.44800603891219,"endHours":20.44800603891219,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:27","end":"21:27","startHours":20.44800603891219,"endHours":21.44800603891219,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:27","end":"22:27","startHours":21.44800603891219,"endHours":22.44800603891219,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:27","end":"23:27","startHours":22.44800603891219,"endHours":23.44800603891219,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:27","end":"00:27","startHours":23.44800603891219,"endHours":24.44800603891219,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:27","end":"01:27","startHours":24.44800603891219,"endHours":25.44800603891219,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:27","end":"02:27","startHours":25.44800603891219,"endHours":26.44800603891219,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:27","end":"03:27","startHours":26.44800603891219,"endHours":27.44800603891219,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:27","end":"04:27","startHours":27.44800603891219,"endHours":28.44800603891219,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:27","end":"05:27","startHours":28.44800603891219,"endHours":29.44800603891219,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:27","end":"06:27","startHours":29.44800603891219,"endHours":30.44800603891219,"planetary_lord":"Saturn"}],"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","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Dhātṛ","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":-22.609019990944695,"eotMinutes":7.723696523337262,"ayanamsa":24.1594}},"calendars":{"vikram_samvat":2078,"vikram_samvatsara":"Ānanda","saka_samvat":1943,"saka_samvatsara":"Plava","bengali_samvat":1428,"malayalam_era":1197,"nanakshahi_year":552,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Caturthī · Vikram 2078 Ānanda · Śaka 1943 Plava"},"festivals":[{"id":"angarika-chaturthi","name":"Aṅgāraka Caturthī (Tuesday Caturthī)","name_sanskrit":"अङ्गारक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa + Maṅgala","significance":"Tuesday-Caturthī (rare); supremely auspicious for Maṅgala-doṣa-nivāraṇa.","vrata":true,"detection":{"any_of":[{"tithi_number":4,"vara_name":"Maṅgalavāra (Tuesday)"},{"tithi_number":19,"vara_name":"Maṅgalavāra (Tuesday)"}]},"precedence":3},{"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":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 7, 2021 CE · Erode, Tamil Nadu · Vidhyamitra","description":"December 7, 2021 CE for Erode, Tamil Nadu: Śukla Caturthī, sūryodaya 06:27, sūryāsta 17:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2021-12-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2021-12-07","sa":"https://sa.vidhyamitra.com/city/erode/2021-12-07","hi":"https://hi.vidhyamitra.com/city/erode/2021-12-07","x-default":"https://vidhyamitra.com/city/erode/2021-12-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T04:32:19.590Z","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":"2026-05-15T04:32:19.590Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T04:32:19.590Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}