{"id":"vidhyamitra:city-day:erode:2011-12-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2011-12-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-12-21","date_display":"December 21, 2011 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":2011,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455916.770833,"kali_year":5113,"ahargana":1867451.2708,"sun":{"sidereal_longitude":244.4134,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":196.4603,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":312.0469,"elapsed_within_tithi_degrees":0.0469},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":196.4603,"elapsed_within_degrees":9.7936},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.8736},"karana":{"half_tithi_index":52,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2011,"month":12,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455916.770833,"ahargana":1867451.2708,"kali_year":5113,"ayanamsa_lahiri":24.0202,"grahas":{"sun":{"sidereal_longitude":244.77927699999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":194.67657699999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false,"latitude":-2.7054},"mars":{"sidereal_longitude":142.77997700000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":222.89757699999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":6.233877000000007,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":276.160877,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":183.22817699999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":233.4449,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":53.4449,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","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":2011,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455916.770833,"kali_year":5113,"ahargana":1867451.2708,"sun":{"sidereal_longitude":244.4134,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":196.4603,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":312.0469,"elapsed_within_tithi_degrees":0.0469},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":196.4603,"elapsed_within_degrees":9.7936},"yoga":{"number":7,"name":"Sukarma","sum_longitude":80.8736},"karana":{"half_tithi_index":52,"name":"Kaulava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.705,"elongation":47.953},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.705,"opposition_distance":132.047}},"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":"06:34","sunsetLocal":"18:02","solarNoonLocal":"12:18","dayLengthHours":11.45897616823627,"dayLengthDisplay":"11 Hours 27 Mins 32 Secs","nightLengthDisplay":"12 Hours 32 Mins 28 Secs","moonriseLocal":"03:07","moonsetLocal":"14:48","rahuKala":{"name":"Rāhu Kāla","start":"12:18","end":"13:44","startHours":12.295809509884297,"endHours":13.72818153091383,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:00","end":"09:26","startHours":7.998693446795696,"endHours":9.43106546782523,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:52","end":"12:18","startHours":10.863437488854764,"endHours":12.295809509884297,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:14","end":"09:37","startHours":9.240082531687959,"endHours":9.6220484039625,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:03","end":"07:21","startHours":7.04377876610934,"endHours":7.349351463928974,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:41","startHours":11.913843637609755,"endHours":12.677775382158838,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:02","end":"05:48","startHours":5.038457936667993,"endHours":5.802389681217077,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:37","end":"06:34","startHours":5.611406745079806,"endHours":6.566321425766162,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"14:58","startHours":14.205638871257008,"endHours":14.969570615806093,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:50","end":"18:14","startHours":17.825297594002432,"endHours":18.22529759400243,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:02","end":"18:30","startHours":18.02529759400243,"endHours":18.50275493434561,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:47","end":"19:32","startHours":17.77529759400243,"endHours":19.52529759400243,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:41","startHours":23.913843637609755,"endHours":24.67777538215884,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:34","end":"08:00","startHours":6.566321425766162,"endHours":7.998693446795696,"quality":"auspicious"},{"name":"Amṛta","start":"08:00","end":"09:26","startHours":7.998693446795696,"endHours":9.43106546782523,"quality":"auspicious"},{"name":"Kāla","start":"09:26","end":"10:52","startHours":9.43106546782523,"endHours":10.863437488854764,"quality":"inauspicious"},{"name":"Śubha","start":"10:52","end":"12:18","startHours":10.863437488854764,"endHours":12.295809509884297,"quality":"auspicious"},{"name":"Roga","start":"12:18","end":"13:44","startHours":12.295809509884297,"endHours":13.72818153091383,"quality":"inauspicious"},{"name":"Udveg","start":"13:44","end":"15:10","startHours":13.72818153091383,"endHours":15.160553551943364,"quality":"inauspicious"},{"name":"Chala","start":"15:10","end":"16:36","startHours":15.160553551943364,"endHours":16.5929255729729,"quality":"neutral"},{"name":"Labha","start":"16:36","end":"18:02","startHours":16.5929255729729,"endHours":18.02529759400243,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:02","end":"19:36","startHours":18.02529759400243,"endHours":19.5929255729729,"quality":"inauspicious"},{"name":"Chala","start":"19:36","end":"21:10","startHours":19.5929255729729,"endHours":21.160553551943366,"quality":"neutral"},{"name":"Labha","start":"21:10","end":"22:44","startHours":21.160553551943366,"endHours":22.72818153091383,"quality":"auspicious"},{"name":"Amṛta","start":"22:44","end":"00:18","startHours":22.72818153091383,"endHours":24.295809509884297,"quality":"auspicious"},{"name":"Kāla","start":"00:18","end":"01:52","startHours":24.295809509884297,"endHours":25.863437488854764,"quality":"inauspicious"},{"name":"Śubha","start":"01:52","end":"03:26","startHours":25.863437488854764,"endHours":27.431065467825228,"quality":"auspicious"},{"name":"Roga","start":"03:26","end":"05:00","startHours":27.431065467825228,"endHours":28.998693446795695,"quality":"inauspicious"},{"name":"Udveg","start":"05:00","end":"06:34","startHours":28.998693446795695,"endHours":30.566321425766162,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:34","end":"07:34","startHours":6.566321425766162,"endHours":7.566321425766162,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:34","end":"08:34","startHours":7.566321425766162,"endHours":8.566321425766162,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:34","end":"09:34","startHours":8.566321425766162,"endHours":9.566321425766162,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:34","end":"10:34","startHours":9.566321425766162,"endHours":10.566321425766162,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:34","end":"11:34","startHours":10.566321425766162,"endHours":11.566321425766162,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:34","end":"12:34","startHours":11.566321425766162,"endHours":12.566321425766162,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:34","end":"13:34","startHours":12.566321425766162,"endHours":13.566321425766162,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:34","end":"14:34","startHours":13.566321425766162,"endHours":14.566321425766162,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:34","end":"15:34","startHours":14.566321425766162,"endHours":15.566321425766162,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:34","end":"16:34","startHours":15.566321425766162,"endHours":16.566321425766162,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:34","end":"17:34","startHours":16.566321425766162,"endHours":17.566321425766162,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:34","end":"18:34","startHours":17.566321425766162,"endHours":18.566321425766162,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:34","end":"19:34","startHours":18.566321425766162,"endHours":19.566321425766162,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:34","end":"20:34","startHours":19.566321425766162,"endHours":20.566321425766162,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:34","end":"21:34","startHours":20.566321425766162,"endHours":21.566321425766162,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:34","end":"22:34","startHours":21.566321425766162,"endHours":22.566321425766162,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:34","end":"23:34","startHours":22.566321425766162,"endHours":23.566321425766162,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:34","end":"00:34","startHours":23.566321425766162,"endHours":24.566321425766162,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:34","end":"01:34","startHours":24.566321425766162,"endHours":25.566321425766162,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:34","end":"02:34","startHours":25.566321425766162,"endHours":26.566321425766162,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:34","end":"03:34","startHours":26.566321425766162,"endHours":27.566321425766162,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:34","end":"04:34","startHours":27.566321425766162,"endHours":28.566321425766162,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:34","end":"05:34","startHours":28.566321425766162,"endHours":29.566321425766162,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:34","end":"06:34","startHours":29.566321425766162,"endHours":30.566321425766162,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"North","rahuVasa":"South-West","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.43104810127125,"eotMinutes":1.382629406942221,"ayanamsa":24.0202}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Dvādaśī · Vikram 2068 Krodhi · Śaka 1933 Khara"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 21, 2011 CE · Erode, Tamil Nadu · Vidhyamitra","description":"December 21, 2011 CE for Erode, Tamil Nadu: Kṛṣṇa Dvādaśī, sūryodaya 06:34, sūryāsta 18:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2011-12-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2011-12-21","sa":"https://sa.vidhyamitra.com/city/erode/2011-12-21","hi":"https://hi.vidhyamitra.com/city/erode/2011-12-21","x-default":"https://vidhyamitra.com/city/erode/2011-12-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T10:16:34.681Z","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":"2026-05-16T10:16:34.681Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T10:16:34.681Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}