{"id":"vidhyamitra:city-day:erode:2180-12-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2180-12-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2180-12-21","date_display":"December 21, 2180 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":2180,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517643.770833,"kali_year":5282,"ahargana":1929178.2708,"sun":{"sidereal_longitude":242.637,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":297.0812,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":54.4442,"elapsed_within_tithi_degrees":6.4442},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":297.0812,"elapsed_within_degrees":3.7479},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":179.7182},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2180,"month":12,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2517643.770833,"ahargana":1929178.2708,"kali_year":5282,"ayanamsa_lahiri":26.381,"grahas":{"sun":{"sidereal_longitude":243.41825100000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":299.95265100000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false,"latitude":4.4877},"mars":{"sidereal_longitude":51.13235099999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":261.259151,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":113.54025100000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":229.880851,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":80.11465099999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":202.8514,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":22.8514,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":2180,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517643.770833,"kali_year":5282,"ahargana":1929178.2708,"sun":{"sidereal_longitude":242.637,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":297.0812,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":54.4442,"elapsed_within_tithi_degrees":6.4442},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2,"moon_longitude":297.0812,"elapsed_within_degrees":3.7479},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":179.7182},"karana":{"half_tithi_index":9,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.488,"elongation":54.444},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.488,"opposition_distance":125.556}},"eclipse_window_40days":[{"offset_days":-19,"type":"lunar","occurs":true,"moon_latitude":-1.399,"opposition_distance":1.186}]},"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":11.458812365786706,"dayLengthDisplay":"11 Hours 27 Mins 32 Secs","nightLengthDisplay":"12 Hours 32 Mins 28 Secs","moonriseLocal":"10:12","moonsetLocal":"21:56","rahuKala":{"name":"Rāhu Kāla","start":"13:44","end":"15:10","startHours":13.728161055607636,"endHours":15.160512601330975,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:34","end":"08:00","startHours":6.566403326990945,"endHours":7.998754872714283,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:26","end":"10:52","startHours":9.431106418437622,"endHours":10.86345796416096,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:14","end":"09:37","startHours":9.240126212341176,"endHours":9.622086624534067,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:03","end":"07:21","startHours":7.043853842232058,"endHours":7.34942217198637,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:41","startHours":11.913849097691406,"endHours":12.677769922077188,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:02","end":"05:48","startHours":5.038561678219384,"endHours":5.802482502605164,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:37","end":"06:34","startHours":5.61150229650872,"endHours":6.566403326990945,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"14:58","startHours":14.205611570848749,"endHours":14.969532395234529,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:50","end":"18:14","startHours":17.82521569277765,"endHours":18.22521569277765,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:02","end":"18:30","startHours":18.02521569277765,"endHours":18.502666208018763,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:47","end":"19:32","startHours":17.77521569277765,"endHours":19.52521569277765,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:41","startHours":23.913849097691408,"endHours":24.677769922077186,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:34","end":"08:00","startHours":6.566403326990945,"endHours":7.998754872714283,"quality":"auspicious"},{"name":"Roga","start":"08:00","end":"09:26","startHours":7.998754872714283,"endHours":9.431106418437622,"quality":"inauspicious"},{"name":"Udveg","start":"09:26","end":"10:52","startHours":9.431106418437622,"endHours":10.86345796416096,"quality":"inauspicious"},{"name":"Chala","start":"10:52","end":"12:18","startHours":10.86345796416096,"endHours":12.295809509884297,"quality":"neutral"},{"name":"Labha","start":"12:18","end":"13:44","startHours":12.295809509884297,"endHours":13.728161055607636,"quality":"auspicious"},{"name":"Amṛta","start":"13:44","end":"15:10","startHours":13.728161055607636,"endHours":15.160512601330975,"quality":"auspicious"},{"name":"Kāla","start":"15:10","end":"16:36","startHours":15.160512601330975,"endHours":16.59286414705431,"quality":"inauspicious"},{"name":"Śubha","start":"16:36","end":"18:02","startHours":16.59286414705431,"endHours":18.02521569277765,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:02","end":"19:36","startHours":18.02521569277765,"endHours":19.59286414705431,"quality":"auspicious"},{"name":"Kāla","start":"19:36","end":"21:10","startHours":19.59286414705431,"endHours":21.16051260133097,"quality":"inauspicious"},{"name":"Śubha","start":"21:10","end":"22:44","startHours":21.16051260133097,"endHours":22.728161055607636,"quality":"auspicious"},{"name":"Roga","start":"22:44","end":"00:18","startHours":22.728161055607636,"endHours":24.295809509884297,"quality":"inauspicious"},{"name":"Udveg","start":"00:18","end":"01:52","startHours":24.295809509884297,"endHours":25.863457964160958,"quality":"inauspicious"},{"name":"Chala","start":"01:52","end":"03:26","startHours":25.863457964160958,"endHours":27.431106418437622,"quality":"neutral"},{"name":"Labha","start":"03:26","end":"05:00","startHours":27.431106418437622,"endHours":28.998754872714283,"quality":"auspicious"},{"name":"Amṛta","start":"05:00","end":"06:34","startHours":28.998754872714283,"endHours":30.566403326990944,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:34","end":"07:34","startHours":6.566403326990945,"endHours":7.566403326990945,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:34","end":"08:34","startHours":7.566403326990945,"endHours":8.566403326990944,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:34","end":"09:34","startHours":8.566403326990944,"endHours":9.566403326990944,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:34","end":"10:34","startHours":9.566403326990944,"endHours":10.566403326990944,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:34","end":"11:34","startHours":10.566403326990944,"endHours":11.566403326990944,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:34","end":"12:34","startHours":11.566403326990944,"endHours":12.566403326990944,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:34","end":"13:34","startHours":12.566403326990944,"endHours":13.566403326990944,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:34","end":"14:34","startHours":13.566403326990944,"endHours":14.566403326990944,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:34","end":"15:34","startHours":14.566403326990944,"endHours":15.566403326990944,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:34","end":"16:34","startHours":15.566403326990944,"endHours":16.566403326990944,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:34","end":"17:34","startHours":16.566403326990944,"endHours":17.566403326990944,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:34","end":"18:34","startHours":17.566403326990944,"endHours":18.566403326990944,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:34","end":"19:34","startHours":18.566403326990944,"endHours":19.566403326990944,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:34","end":"20:34","startHours":19.566403326990944,"endHours":20.566403326990944,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:34","end":"21:34","startHours":20.566403326990944,"endHours":21.566403326990944,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:34","end":"22:34","startHours":21.566403326990944,"endHours":22.566403326990944,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:34","end":"23:34","startHours":22.566403326990944,"endHours":23.566403326990944,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:34","end":"00:34","startHours":23.566403326990944,"endHours":24.566403326990944,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:34","end":"01:34","startHours":24.566403326990944,"endHours":25.566403326990944,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:34","end":"02:34","startHours":25.566403326990944,"endHours":26.566403326990944,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:34","end":"03:34","startHours":26.566403326990944,"endHours":27.566403326990944,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:34","end":"04:34","startHours":27.566403326990944,"endHours":28.566403326990944,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:34","end":"05:34","startHours":28.566403326990944,"endHours":29.566403326990944,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:34","end":"06:34","startHours":29.566403326990944,"endHours":30.566403326990944,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.43634754637961,"eotMinutes":1.382629406942221,"ayanamsa":26.381}},"calendars":{"vikram_samvat":2237,"vikram_samvatsara":"Vijaya","saka_samvat":2102,"saka_samvatsara":"Vikrama","bengali_samvat":1587,"malayalam_era":1356,"nanakshahi_year":711,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Pañcamī · Vikram 2237 Vijaya · Śaka 2102 Vikrama"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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, 2180 CE · Erode, Tamil Nadu · Vidhyamitra","description":"December 21, 2180 CE for Erode, Tamil Nadu: Śukla Pañcamī, sūryodaya 06:34, sūryāsta 18:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2180-12-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2180-12-21","sa":"https://sa.vidhyamitra.com/city/erode/2180-12-21","hi":"https://hi.vidhyamitra.com/city/erode/2180-12-21","x-default":"https://vidhyamitra.com/city/erode/2180-12-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:31:48.677Z","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":"2026-05-31T15:31:48.677Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:31:48.677Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}