{"id":"vidhyamitra:city-day:ayodhya:1680-12-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1680-12-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1680-12-09","date_display":"December 9, 1680 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":1680,"month":12,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2335010.770833,"kali_year":4782,"ahargana":1746545.2708,"sun":{"sidereal_longitude":238.9198,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":99.9051,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":220.9853,"elapsed_within_tithi_degrees":4.9853},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":99.9051,"elapsed_within_degrees":6.5718},"yoga":{"number":26,"name":"Indra","sum_longitude":338.8249},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1680,"month":12,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2335010.770833,"ahargana":1746545.2708,"kali_year":4782,"ayanamsa_lahiri":19.396,"grahas":{"sun":{"sidereal_longitude":238.55387499999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":101.25517500000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false,"latitude":-3.8851},"mars":{"sidereal_longitude":148.98567500000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":260.89577499999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":54.66927499999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":266.44887500000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":95.95417499999996,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":159.6266,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":339.6266,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"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":1680,"month":12,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2335010.770833,"kali_year":4782,"ahargana":1746545.2708,"sun":{"sidereal_longitude":238.9198,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":99.9051,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":220.9853,"elapsed_within_tithi_degrees":4.9853},"nakshatra":{"number":8,"name":"Puṣya","pada":2,"moon_longitude":99.9051,"elapsed_within_degrees":6.5718},"yoga":{"number":26,"name":"Indra","sum_longitude":338.8249},"karana":{"half_tithi_index":36,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.885,"elongation":139.015},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.885,"opposition_distance":40.985}},"eclipse_window_40days":[]},"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:39","sunsetLocal":"17:09","solarNoonLocal":"11:54","dayLengthHours":10.496118820071253,"dayLengthDisplay":"10 Hours 29 Mins 46 Secs","nightLengthDisplay":"13 Hours 30 Mins 14 Secs","moonriseLocal":"20:00","moonsetLocal":"09:30","rahuKala":{"name":"Rāhu Kāla","start":"07:58","end":"09:17","startHours":7.969241068336595,"endHours":9.281255920845503,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:36","end":"11:54","startHours":10.593270773354408,"endHours":11.905285625863314,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:13","end":"14:32","startHours":13.217300478372222,"endHours":14.52931533088113,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:06","end":"09:27","startHours":9.106320607177647,"endHours":9.456191234513357,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:06","end":"07:22","startHours":7.0945644999973245,"endHours":7.374461001865892,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:33","end":"12:15","startHours":11.555414998527606,"endHours":12.255156253199022,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:15","end":"05:57","startHours":5.257743706484855,"endHours":5.957484961156272,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:47","end":"06:39","startHours":5.782549647488418,"endHours":6.657226215827689,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:39","end":"14:21","startHours":13.654638762541857,"endHours":14.354380017213275,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:57","end":"17:21","startHours":16.95334503589894,"endHours":17.35334503589894,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:09","end":"17:35","startHours":17.15334503589894,"endHours":17.590683320068575,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:54","end":"18:39","startHours":16.90334503589894,"endHours":18.65334503589894,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:33","end":"00:15","startHours":23.555414998527606,"endHours":24.255156253199022,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:39","end":"07:58","startHours":6.657226215827689,"endHours":7.969241068336595,"quality":"auspicious"},{"name":"Kāla","start":"07:58","end":"09:17","startHours":7.969241068336595,"endHours":9.281255920845503,"quality":"inauspicious"},{"name":"Śubha","start":"09:17","end":"10:36","startHours":9.281255920845503,"endHours":10.593270773354408,"quality":"auspicious"},{"name":"Roga","start":"10:36","end":"11:54","startHours":10.593270773354408,"endHours":11.905285625863314,"quality":"inauspicious"},{"name":"Udveg","start":"11:54","end":"13:13","startHours":11.905285625863314,"endHours":13.217300478372222,"quality":"inauspicious"},{"name":"Chala","start":"13:13","end":"14:32","startHours":13.217300478372222,"endHours":14.52931533088113,"quality":"neutral"},{"name":"Labha","start":"14:32","end":"15:50","startHours":14.52931533088113,"endHours":15.841330183390035,"quality":"auspicious"},{"name":"Amṛta","start":"15:50","end":"17:09","startHours":15.841330183390035,"endHours":17.15334503589894,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:09","end":"18:50","startHours":17.15334503589894,"endHours":18.841330183390035,"quality":"neutral"},{"name":"Labha","start":"18:50","end":"20:32","startHours":18.841330183390035,"endHours":20.529315330881126,"quality":"auspicious"},{"name":"Amṛta","start":"20:32","end":"22:13","startHours":20.529315330881126,"endHours":22.21730047837222,"quality":"auspicious"},{"name":"Kāla","start":"22:13","end":"23:54","startHours":22.21730047837222,"endHours":23.905285625863314,"quality":"inauspicious"},{"name":"Śubha","start":"23:54","end":"01:36","startHours":23.905285625863314,"endHours":25.59327077335441,"quality":"auspicious"},{"name":"Roga","start":"01:36","end":"03:17","startHours":25.59327077335441,"endHours":27.281255920845503,"quality":"inauspicious"},{"name":"Udveg","start":"03:17","end":"04:58","startHours":27.281255920845503,"endHours":28.969241068336594,"quality":"inauspicious"},{"name":"Chala","start":"04:58","end":"06:39","startHours":28.969241068336594,"endHours":30.657226215827688,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:39","end":"07:39","startHours":6.657226215827689,"endHours":7.657226215827689,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:39","end":"08:39","startHours":7.657226215827689,"endHours":8.657226215827688,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:39","end":"09:39","startHours":8.657226215827688,"endHours":9.657226215827688,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:39","end":"10:39","startHours":9.657226215827688,"endHours":10.657226215827688,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:39","end":"11:39","startHours":10.657226215827688,"endHours":11.657226215827688,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:39","end":"12:39","startHours":11.657226215827688,"endHours":12.657226215827688,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:39","end":"13:39","startHours":12.657226215827688,"endHours":13.657226215827688,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:39","end":"14:39","startHours":13.657226215827688,"endHours":14.657226215827688,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:39","end":"15:39","startHours":14.657226215827688,"endHours":15.657226215827688,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:39","end":"16:39","startHours":15.657226215827688,"endHours":16.657226215827688,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:39","end":"17:39","startHours":16.657226215827688,"endHours":17.657226215827688,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:39","end":"18:39","startHours":17.657226215827688,"endHours":18.657226215827688,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:39","end":"19:39","startHours":18.657226215827688,"endHours":19.657226215827688,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:39","end":"20:39","startHours":19.657226215827688,"endHours":20.657226215827688,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:39","end":"21:39","startHours":20.657226215827688,"endHours":21.657226215827688,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:39","end":"22:39","startHours":21.657226215827688,"endHours":22.657226215827688,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:39","end":"23:39","startHours":22.657226215827688,"endHours":23.657226215827688,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:39","end":"00:39","startHours":23.657226215827688,"endHours":24.657226215827688,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:39","end":"01:39","startHours":24.657226215827688,"endHours":25.657226215827688,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:39","end":"02:39","startHours":25.657226215827688,"endHours":26.657226215827688,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:39","end":"03:39","startHours":26.657226215827688,"endHours":27.657226215827688,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:39","end":"04:39","startHours":27.657226215827688,"endHours":28.657226215827688,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:39","end":"05:39","startHours":28.657226215827688,"endHours":29.657226215827688,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:39","end":"06:39","startHours":29.657226215827688,"endHours":30.657226215827688,"planetary_lord":"Venus"}],"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","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.89033540021734,"eotMinutes":6.866862448201248,"ayanamsa":19.396}},"calendars":{"vikram_samvat":1737,"vikram_samvatsara":"Śrīmukha","saka_samvat":1602,"saka_samvatsara":"Raudra","bengali_samvat":1087,"malayalam_era":856,"nanakshahi_year":211,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Caturthī · Vikram 1737 Śrīmukha · Śaka 1602 Raudra"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"ayodhya"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 9, 1680 CE · Ayodhyā · Vidhyamitra","description":"December 9, 1680 CE for Ayodhyā: Kṛṣṇa Caturthī, sūryodaya 06:39, sūryāsta 17:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1680-12-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1680-12-09","sa":"https://sa.vidhyamitra.com/city/ayodhya/1680-12-09","hi":"https://hi.vidhyamitra.com/city/ayodhya/1680-12-09","x-default":"https://vidhyamitra.com/city/ayodhya/1680-12-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T20:10:03.395Z","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":"2026-06-03T20:10:03.395Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T20:10:03.395Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}