{"id":"vidhyamitra:city-day:ayodhya:2018-12-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2018-12-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2018-12-21","date_display":"December 21, 2018 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":2018,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458473.770833,"kali_year":5120,"ahargana":1870008.2708,"sun":{"sidereal_longitude":244.6072,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":41.299,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":156.6918,"elapsed_within_tithi_degrees":0.6918},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":41.299,"elapsed_within_degrees":1.299},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.9062},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2018,"month":12,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458473.770833,"ahargana":1870008.2708,"kali_year":5120,"ayanamsa_lahiri":24.118,"grahas":{"sun":{"sidereal_longitude":244.98778000000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"moon":{"sidereal_longitude":42.009479999999996,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false,"latitude":-3.7584},"mars":{"sidereal_longitude":328.20258,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":224.19277999999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":225.26498000000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":198.87457999999992,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":255.86788,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":97.9627,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.9627,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":2018,"month":12,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458473.770833,"kali_year":5120,"ahargana":1870008.2708,"sun":{"sidereal_longitude":244.6072,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":41.299,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":156.6918,"elapsed_within_tithi_degrees":0.6918},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":41.299,"elapsed_within_degrees":1.299},"yoga":{"number":22,"name":"Sādhya","sum_longitude":285.9062},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.758,"elongation":156.692},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.758,"opposition_distance":23.308}},"eclipse_window_40days":[{"offset_days":16,"type":"solar","occurs":true,"moon_latitude":1.158,"elongation":1.13}]},"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":10.452525992956158,"dayLengthDisplay":"10 Hours 27 Mins 09 Secs","nightLengthDisplay":"13 Hours 32 Mins 51 Secs","moonriseLocal":"15:40","moonsetLocal":"05:16","rahuKala":{"name":"Rāhu Kāla","start":"10:41","end":"12:00","startHours":10.690123760764777,"endHours":11.996689509884296,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:37","end":"15:55","startHours":14.609821008123337,"endHours":15.916386757242856,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:05","end":"09:23","startHours":8.076992262525737,"endHours":9.383558011645256,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:33","startHours":9.209349245095988,"endHours":9.557766778194527,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:12","end":"07:29","startHours":7.205948429779391,"endHours":7.484682456258222,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:21","startHours":11.648271976785757,"endHours":12.345107042982836,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:23","end":"06:04","startHours":5.376756381012063,"endHours":6.07359144720914,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:54","end":"06:46","startHours":5.899382680659871,"endHours":6.770426513406218,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:44","end":"14:26","startHours":13.738777175376988,"endHours":14.435612241574065,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:01","end":"17:25","startHours":17.022952506362376,"endHours":17.422952506362375,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:13","end":"17:40","startHours":17.222952506362375,"endHours":17.658474422735548,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:58","end":"18:43","startHours":16.972952506362375,"endHours":18.722952506362375,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:21","startHours":23.64827197678576,"endHours":24.345107042982836,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:46","end":"08:05","startHours":6.770426513406218,"endHours":8.076992262525737,"quality":"neutral"},{"name":"Labha","start":"08:05","end":"09:23","startHours":8.076992262525737,"endHours":9.383558011645256,"quality":"auspicious"},{"name":"Amṛta","start":"09:23","end":"10:41","startHours":9.383558011645256,"endHours":10.690123760764777,"quality":"auspicious"},{"name":"Kāla","start":"10:41","end":"12:00","startHours":10.690123760764777,"endHours":11.996689509884296,"quality":"inauspicious"},{"name":"Śubha","start":"12:00","end":"13:18","startHours":11.996689509884296,"endHours":13.303255259003816,"quality":"auspicious"},{"name":"Roga","start":"13:18","end":"14:37","startHours":13.303255259003816,"endHours":14.609821008123337,"quality":"inauspicious"},{"name":"Udveg","start":"14:37","end":"15:55","startHours":14.609821008123337,"endHours":15.916386757242856,"quality":"inauspicious"},{"name":"Chala","start":"15:55","end":"17:13","startHours":15.916386757242856,"endHours":17.222952506362375,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:13","end":"18:55","startHours":17.222952506362375,"endHours":18.916386757242854,"quality":"inauspicious"},{"name":"Udveg","start":"18:55","end":"20:37","startHours":18.916386757242854,"endHours":20.609821008123337,"quality":"inauspicious"},{"name":"Chala","start":"20:37","end":"22:18","startHours":20.609821008123337,"endHours":22.303255259003816,"quality":"neutral"},{"name":"Labha","start":"22:18","end":"00:00","startHours":22.303255259003816,"endHours":23.9966895098843,"quality":"auspicious"},{"name":"Amṛta","start":"00:00","end":"01:41","startHours":23.9966895098843,"endHours":25.690123760764777,"quality":"auspicious"},{"name":"Kāla","start":"01:41","end":"03:23","startHours":25.690123760764777,"endHours":27.383558011645256,"quality":"inauspicious"},{"name":"Śubha","start":"03:23","end":"05:05","startHours":27.383558011645256,"endHours":29.076992262525735,"quality":"auspicious"},{"name":"Roga","start":"05:05","end":"06:46","startHours":29.076992262525735,"endHours":30.770426513406218,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:46","end":"07:46","startHours":6.770426513406218,"endHours":7.770426513406218,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:46","end":"08:46","startHours":7.770426513406218,"endHours":8.770426513406218,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:46","end":"09:46","startHours":8.770426513406218,"endHours":9.770426513406218,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:46","end":"10:46","startHours":9.770426513406218,"endHours":10.770426513406218,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:46","end":"11:46","startHours":10.770426513406218,"endHours":11.770426513406218,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:46","end":"12:46","startHours":11.770426513406218,"endHours":12.770426513406218,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:46","end":"13:46","startHours":12.770426513406218,"endHours":13.770426513406218,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:46","end":"14:46","startHours":13.770426513406218,"endHours":14.770426513406218,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:46","end":"15:46","startHours":14.770426513406218,"endHours":15.770426513406218,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:46","end":"16:46","startHours":15.770426513406218,"endHours":16.770426513406218,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:46","end":"17:46","startHours":16.770426513406218,"endHours":17.770426513406218,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:46","end":"18:46","startHours":17.770426513406218,"endHours":18.770426513406218,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:46","end":"19:46","startHours":18.770426513406218,"endHours":19.770426513406218,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:46","end":"20:46","startHours":19.770426513406218,"endHours":20.770426513406218,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:46","end":"21:46","startHours":20.770426513406218,"endHours":21.770426513406218,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:46","end":"22:46","startHours":21.770426513406218,"endHours":22.770426513406218,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:46","end":"23:46","startHours":22.770426513406218,"endHours":23.770426513406218,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:46","end":"00:46","startHours":23.770426513406218,"endHours":24.770426513406218,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:46","end":"01:46","startHours":24.770426513406218,"endHours":25.770426513406218,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:46","end":"02:46","startHours":25.770426513406218,"endHours":26.770426513406218,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:46","end":"03:46","startHours":26.770426513406218,"endHours":27.770426513406218,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:46","end":"04:46","startHours":27.770426513406218,"endHours":28.770426513406218,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:46","end":"05:46","startHours":28.770426513406218,"endHours":29.770426513406218,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:46","end":"06:46","startHours":29.770426513406218,"endHours":30.770426513406218,"planetary_lord":"Mars"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Mātaṇga","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":-23.433475130597298,"eotMinutes":1.382629406942221,"ayanamsa":24.118}},"calendars":{"vikram_samvat":2075,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1940,"saka_samvatsara":"Vilambī","bengali_samvat":1425,"malayalam_era":1194,"nanakshahi_year":549,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Caturdaśī · Vikram 2075 Virodhakṛt · Śaka 1940 Vilambī"},"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":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","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, 2018 CE · Ayodhyā · Vidhyamitra","description":"December 21, 2018 CE for Ayodhyā: Śukla Caturdaśī, sūryodaya 06:46, sūryāsta 17:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2018-12-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2018-12-21","sa":"https://sa.vidhyamitra.com/city/ayodhya/2018-12-21","hi":"https://hi.vidhyamitra.com/city/ayodhya/2018-12-21","x-default":"https://vidhyamitra.com/city/ayodhya/2018-12-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T08:10:53.671Z","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":"2026-05-15T08:10:53.671Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T08:10:53.671Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}