{"id":"vidhyamitra:city-day:ayodhya:2175-12-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2175-12-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2175-12-21","date_display":"December 21, 2175 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":2175,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515816.770833,"kali_year":5277,"ahargana":1927351.2708,"sun":{"sidereal_longitude":241.9119,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":335.9839,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":94.0719,"elapsed_within_tithi_degrees":10.0719},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":335.9839,"elapsed_within_degrees":2.6505},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":217.8958},"karana":{"half_tithi_index":15,"name":"Bava"},"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":2175,"month":12,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2515816.770833,"ahargana":1927351.2708,"kali_year":5277,"ayanamsa_lahiri":26.3112,"grahas":{"sun":{"sidereal_longitude":242.68775600000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":333.958856,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false,"latitude":2.6641},"mars":{"sidereal_longitude":190.58125599999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":223.33355600000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":295.207456,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":210.47475599999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":5.663955999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":299.6546,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":119.6546,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"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":2175,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2515816.770833,"kali_year":5277,"ahargana":1927351.2708,"sun":{"sidereal_longitude":241.9119,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":335.9839,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":94.0719,"elapsed_within_tithi_degrees":10.0719},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":335.9839,"elapsed_within_degrees":2.6505},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":217.8958},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.664,"elongation":94.072},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.664,"opposition_distance":85.928}},"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":"06:46","sunsetLocal":"17:13","solarNoonLocal":"12:00","dayLengthHours":10.4525877374147,"dayLengthDisplay":"10 Hours 27 Mins 09 Secs","nightLengthDisplay":"13 Hours 32 Mins 51 Secs","moonriseLocal":"12:02","moonsetLocal":"00:08","rahuKala":{"name":"Rāhu Kāla","start":"13:18","end":"14:37","startHours":13.303262977061134,"endHours":14.60983644423797,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:46","end":"08:05","startHours":6.770395641176947,"endHours":8.076969108353785,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:23","end":"10:41","startHours":9.383542575530623,"endHours":10.690116042707459,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:33","startHours":9.209332779907044,"endHours":9.5577523711542,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:12","end":"07:29","startHours":7.205920130235892,"endHours":7.4846558032336175,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:21","startHours":11.64826991863714,"endHours":12.345109101131452,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:04","startHours":5.37671727618832,"endHours":6.073556458682633,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:54","end":"06:46","startHours":5.899346663059055,"endHours":6.770395641176947,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:44","end":"14:26","startHours":13.73878746612008,"endHours":14.435626648614393,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:01","end":"17:25","startHours":17.022983378591647,"endHours":17.422983378591645,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:13","end":"17:40","startHours":17.222983378591646,"endHours":17.65850786765059,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:58","end":"18:43","startHours":16.972983378591646,"endHours":18.722983378591646,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:21","startHours":23.64826991863714,"endHours":24.345109101131456,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:46","end":"08:05","startHours":6.770395641176947,"endHours":8.076969108353785,"quality":"auspicious"},{"name":"Roga","start":"08:05","end":"09:23","startHours":8.076969108353785,"endHours":9.383542575530623,"quality":"inauspicious"},{"name":"Udveg","start":"09:23","end":"10:41","startHours":9.383542575530623,"endHours":10.690116042707459,"quality":"inauspicious"},{"name":"Chala","start":"10:41","end":"12:00","startHours":10.690116042707459,"endHours":11.996689509884296,"quality":"neutral"},{"name":"Labha","start":"12:00","end":"13:18","startHours":11.996689509884296,"endHours":13.303262977061134,"quality":"auspicious"},{"name":"Amṛta","start":"13:18","end":"14:37","startHours":13.303262977061134,"endHours":14.60983644423797,"quality":"auspicious"},{"name":"Kāla","start":"14:37","end":"15:55","startHours":14.60983644423797,"endHours":15.916409911414808,"quality":"inauspicious"},{"name":"Śubha","start":"15:55","end":"17:13","startHours":15.916409911414808,"endHours":17.222983378591646,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:13","end":"18:55","startHours":17.222983378591646,"endHours":18.91640991141481,"quality":"auspicious"},{"name":"Kāla","start":"18:55","end":"20:37","startHours":18.91640991141481,"endHours":20.60983644423797,"quality":"inauspicious"},{"name":"Śubha","start":"20:37","end":"22:18","startHours":20.60983644423797,"endHours":22.303262977061134,"quality":"auspicious"},{"name":"Roga","start":"22:18","end":"00:00","startHours":22.303262977061134,"endHours":23.9966895098843,"quality":"inauspicious"},{"name":"Udveg","start":"00:00","end":"01:41","startHours":23.9966895098843,"endHours":25.69011604270746,"quality":"inauspicious"},{"name":"Chala","start":"01:41","end":"03:23","startHours":25.69011604270746,"endHours":27.383542575530623,"quality":"neutral"},{"name":"Labha","start":"03:23","end":"05:05","startHours":27.383542575530623,"endHours":29.076969108353786,"quality":"auspicious"},{"name":"Amṛta","start":"05:05","end":"06:46","startHours":29.076969108353786,"endHours":30.770395641176947,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:46","end":"07:46","startHours":6.770395641176947,"endHours":7.770395641176947,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:46","end":"08:46","startHours":7.770395641176947,"endHours":8.770395641176947,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:46","end":"09:46","startHours":8.770395641176947,"endHours":9.770395641176947,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:46","end":"10:46","startHours":9.770395641176947,"endHours":10.770395641176947,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:46","end":"11:46","startHours":10.770395641176947,"endHours":11.770395641176947,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:46","end":"12:46","startHours":11.770395641176947,"endHours":12.770395641176947,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:46","end":"13:46","startHours":12.770395641176947,"endHours":13.770395641176947,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:46","end":"14:46","startHours":13.770395641176947,"endHours":14.770395641176947,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:46","end":"15:46","startHours":14.770395641176947,"endHours":15.770395641176947,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:46","end":"16:46","startHours":15.770395641176947,"endHours":16.770395641176947,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:46","end":"17:46","startHours":16.770395641176947,"endHours":17.770395641176947,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:46","end":"18:46","startHours":17.770395641176947,"endHours":18.770395641176947,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:46","end":"19:46","startHours":18.770395641176947,"endHours":19.770395641176947,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:46","end":"20:46","startHours":19.770395641176947,"endHours":20.770395641176947,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:46","end":"21:46","startHours":20.770395641176947,"endHours":21.770395641176947,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:46","end":"22:46","startHours":21.770395641176947,"endHours":22.770395641176947,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:46","end":"23:46","startHours":22.770395641176947,"endHours":23.770395641176947,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:46","end":"00:46","startHours":23.770395641176947,"endHours":24.770395641176947,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:46","end":"01:46","startHours":24.770395641176947,"endHours":25.770395641176947,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:46","end":"02:46","startHours":25.770395641176947,"endHours":26.770395641176947,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:46","end":"03:46","startHours":26.770395641176947,"endHours":27.770395641176947,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:46","end":"04:46","startHours":27.770395641176947,"endHours":28.770395641176947,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:46","end":"05:46","startHours":28.770395641176947,"endHours":29.770395641176947,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:46","end":"06:46","startHours":29.770395641176947,"endHours":30.770395641176947,"planetary_lord":"Moon"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Padma","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":-23.43270928865829,"eotMinutes":1.382629406942221,"ayanamsa":26.3112}},"calendars":{"vikram_samvat":2232,"vikram_samvatsara":"Sarvadhāri","saka_samvat":2097,"saka_samvatsara":"Yuva","bengali_samvat":1582,"malayalam_era":1351,"nanakshahi_year":706,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Aṣṭamī · Vikram 2232 Sarvadhāri · Śaka 2097 Yuva"},"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":"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":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"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 21, 2175 CE · Ayodhyā · Vidhyamitra","description":"December 21, 2175 CE for Ayodhyā: Śukla Aṣṭamī, sūryodaya 06:46, sūryāsta 17:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2175-12-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2175-12-21","sa":"https://sa.vidhyamitra.com/city/ayodhya/2175-12-21","hi":"https://hi.vidhyamitra.com/city/ayodhya/2175-12-21","x-default":"https://vidhyamitra.com/city/ayodhya/2175-12-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T06:22:44.183Z","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":"2026-05-23T06:22:44.183Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T06:22:44.183Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}