{"id":"vidhyamitra:city-day:ayodhya:2178-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2178-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2178-12-13","date_display":"December 13, 2178 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":2178,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2516904.770833,"kali_year":5280,"ahargana":1928439.2708,"sun":{"sidereal_longitude":233.9361,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":280.2793,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":46.3432,"elapsed_within_tithi_degrees":10.3432},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1,"moon_longitude":280.2793,"elapsed_within_degrees":0.2793},"yoga":{"number":12,"name":"Dhruva","sum_longitude":154.2154},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":2178,"month":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2516904.770833,"ahargana":1928439.2708,"kali_year":5280,"ayanamsa_lahiri":26.3528,"grahas":{"sun":{"sidereal_longitude":234.78718700000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":278.812187,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false,"latitude":2.7855},"mars":{"sidereal_longitude":356.911087,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":229.29198699999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":40.86528700000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":187.04788699999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":50.201787000000024,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":242.0071,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":62.0071,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","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":2178,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2516904.770833,"kali_year":5280,"ahargana":1928439.2708,"sun":{"sidereal_longitude":233.9361,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":280.2793,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":46.3432,"elapsed_within_tithi_degrees":10.3432},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1,"moon_longitude":280.2793,"elapsed_within_degrees":0.2793},"yoga":{"number":12,"name":"Dhruva","sum_longitude":154.2154},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.786,"elongation":46.343},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.786,"opposition_distance":133.657}},"eclipse_window_40days":[{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":-1.072,"elongation":1.422},{"offset_days":12,"type":"lunar","occurs":true,"moon_latitude":-0.42,"opposition_distance":0.486}]},"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":"06:42","sunsetLocal":"17:10","solarNoonLocal":"11:56","dayLengthHours":10.476092243861423,"dayLengthDisplay":"10 Hours 28 Mins 34 Secs","nightLengthDisplay":"13 Hours 31 Mins 26 Secs","moonriseLocal":"09:29","moonsetLocal":"20:15","rahuKala":{"name":"Rāhu Kāla","start":"15:52","end":"17:10","startHours":15.863423753957733,"endHours":17.17293528444041,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:56","end":"13:15","startHours":11.934889162509698,"endHours":13.244400692992375,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:33","end":"15:52","startHours":14.553912223475052,"endHours":15.863423753957733,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:08","end":"09:29","startHours":9.14126456414665,"endHours":9.490467638942032,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:08","end":"07:25","startHours":7.1333468840732115,"endHours":7.412709343909516,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:17","startHours":11.585686087714317,"endHours":12.28409223730508,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:18","end":"06:00","startHours":5.300030741397463,"endHours":5.998436890988224,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:49","end":"06:42","startHours":5.823835353590534,"endHours":6.696843040578986,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:41","end":"14:23","startHours":13.6809045364866,"endHours":14.379310686077362,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:58","end":"17:22","startHours":16.97293528444041,"endHours":17.37293528444041,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:10","end":"17:37","startHours":17.17293528444041,"endHours":17.609439127934635,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:55","end":"18:40","startHours":16.92293528444041,"endHours":18.67293528444041,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:17","startHours":23.58568608771432,"endHours":24.284092237305078,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:42","end":"08:00","startHours":6.696843040578986,"endHours":8.006354571061664,"quality":"inauspicious"},{"name":"Chala","start":"08:00","end":"09:19","startHours":8.006354571061664,"endHours":9.31586610154434,"quality":"neutral"},{"name":"Labha","start":"09:19","end":"10:38","startHours":9.31586610154434,"endHours":10.62537763202702,"quality":"auspicious"},{"name":"Amṛta","start":"10:38","end":"11:56","startHours":10.62537763202702,"endHours":11.934889162509698,"quality":"auspicious"},{"name":"Kāla","start":"11:56","end":"13:15","startHours":11.934889162509698,"endHours":13.244400692992375,"quality":"inauspicious"},{"name":"Śubha","start":"13:15","end":"14:33","startHours":13.244400692992375,"endHours":14.553912223475052,"quality":"auspicious"},{"name":"Roga","start":"14:33","end":"15:52","startHours":14.553912223475052,"endHours":15.863423753957733,"quality":"inauspicious"},{"name":"Udveg","start":"15:52","end":"17:10","startHours":15.863423753957733,"endHours":17.17293528444041,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:10","end":"18:52","startHours":17.17293528444041,"endHours":18.863423753957733,"quality":"auspicious"},{"name":"Roga","start":"18:52","end":"20:33","startHours":18.863423753957733,"endHours":20.553912223475052,"quality":"inauspicious"},{"name":"Udveg","start":"20:33","end":"22:15","startHours":20.553912223475052,"endHours":22.244400692992375,"quality":"inauspicious"},{"name":"Chala","start":"22:15","end":"23:56","startHours":22.244400692992375,"endHours":23.9348891625097,"quality":"neutral"},{"name":"Labha","start":"23:56","end":"01:38","startHours":23.9348891625097,"endHours":25.62537763202702,"quality":"auspicious"},{"name":"Amṛta","start":"01:38","end":"03:19","startHours":25.62537763202702,"endHours":27.315866101544344,"quality":"auspicious"},{"name":"Kāla","start":"03:19","end":"05:00","startHours":27.315866101544344,"endHours":29.006354571061664,"quality":"inauspicious"},{"name":"Śubha","start":"05:00","end":"06:42","startHours":29.006354571061664,"endHours":30.696843040578987,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.696843040578986,"endHours":7.696843040578986,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.696843040578986,"endHours":8.696843040578987,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.696843040578987,"endHours":9.696843040578987,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.696843040578987,"endHours":10.696843040578987,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.696843040578987,"endHours":11.696843040578987,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.696843040578987,"endHours":12.696843040578987,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.696843040578987,"endHours":13.696843040578987,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.696843040578987,"endHours":14.696843040578987,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.696843040578987,"endHours":15.696843040578987,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.696843040578987,"endHours":16.696843040578987,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.696843040578987,"endHours":17.696843040578987,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.696843040578987,"endHours":18.696843040578987,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.696843040578987,"endHours":19.696843040578987,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.696843040578987,"endHours":20.696843040578987,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.696843040578987,"endHours":21.696843040578987,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.696843040578987,"endHours":22.696843040578987,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.696843040578987,"endHours":23.696843040578987,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.696843040578987,"endHours":24.696843040578987,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.696843040578987,"endHours":25.696843040578987,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.696843040578987,"endHours":26.696843040578987,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.696843040578987,"endHours":27.696843040578987,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.696843040578987,"endHours":28.696843040578987,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.696843040578987,"endHours":29.696843040578987,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.696843040578987,"endHours":30.696843040578987,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"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":-23.140459849735727,"eotMinutes":5.090650249418121,"ayanamsa":26.3528}},"calendars":{"vikram_samvat":2235,"vikram_samvatsara":"Khara","saka_samvat":2100,"saka_samvatsara":"Bahudhānya","bengali_samvat":1585,"malayalam_era":1354,"nanakshahi_year":709,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Caturthī · Vikram 2235 Khara · Śaka 2100 Bahudhānya"},"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":"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":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 13, 2178 CE · Ayodhyā · Vidhyamitra","description":"December 13, 2178 CE for Ayodhyā: Śukla Caturthī, sūryodaya 06:42, sūryāsta 17:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2178-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2178-12-13","sa":"https://sa.vidhyamitra.com/city/ayodhya/2178-12-13","hi":"https://hi.vidhyamitra.com/city/ayodhya/2178-12-13","x-default":"https://vidhyamitra.com/city/ayodhya/2178-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T18:51:33.181Z","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":"2026-05-22T18:51:33.181Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T18:51:33.181Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}