{"id":"vidhyamitra:city-day:ayodhya:1980-12-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1980-12-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-12-11","date_display":"December 11, 1980 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":1980,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444584.770833,"kali_year":5082,"ahargana":1856119.2708,"sun":{"sidereal_longitude":235.2004,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":276.4697,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.2693,"elapsed_within_tithi_degrees":5.2693},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":276.4697,"elapsed_within_degrees":9.8031},"yoga":{"number":12,"name":"Dhruva","sum_longitude":151.6702},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":1980,"month":12,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444584.770833,"ahargana":1856119.2708,"kali_year":5082,"ayanamsa_lahiri":23.5868,"grahas":{"sun":{"sidereal_longitude":235.571642,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":275.56314199999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false,"latitude":1.3443},"mars":{"sidereal_longitude":261.255942,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":224.584742,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":163.849742,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":207.71224200000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":164.63384199999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":113.8688,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":293.8688,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"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":1980,"month":12,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444584.770833,"kali_year":5082,"ahargana":1856119.2708,"sun":{"sidereal_longitude":235.2004,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":276.4697,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.2693,"elapsed_within_tithi_degrees":5.2693},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":276.4697,"elapsed_within_degrees":9.8031},"yoga":{"number":12,"name":"Dhruva","sum_longitude":151.6702},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.344,"elongation":41.269},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.344,"opposition_distance":138.731}},"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":"06:41","sunsetLocal":"17:10","solarNoonLocal":"11:55","dayLengthHours":10.48783553149805,"dayLengthDisplay":"10 Hours 29 Mins 16 Secs","nightLengthDisplay":"13 Hours 30 Mins 44 Secs","moonriseLocal":"09:15","moonsetLocal":"19:55","rahuKala":{"name":"Rāhu Kāla","start":"13:14","end":"14:33","startHours":13.230911396695042,"endHours":14.5418908381323,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:41","end":"07:59","startHours":6.676014189508762,"endHours":7.986993630946018,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:18","end":"10:37","startHours":9.297973072383275,"endHours":10.60895251382053,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:07","end":"09:28","startHours":9.123175813524973,"endHours":9.472770331241575,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:07","end":"07:24","startHours":7.113007336654514,"endHours":7.392682950827795,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:34","end":"12:16","startHours":11.570337437541186,"endHours":12.26952647297439,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:17","end":"05:59","startHours":5.277636118642356,"endHours":5.976825154075558,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:48","end":"06:41","startHours":5.8020278952172575,"endHours":6.676014189508762,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:40","end":"14:22","startHours":13.667904543840795,"endHours":14.367093579273998,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:58","end":"17:22","startHours":16.963849721006813,"endHours":17.36384972100681,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:10","end":"17:36","startHours":17.163849721006812,"endHours":17.600842868152565,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:55","end":"18:40","startHours":16.913849721006812,"endHours":18.663849721006812,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:34","end":"00:16","startHours":23.570337437541188,"endHours":24.269526472974388,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:41","end":"07:59","startHours":6.676014189508762,"endHours":7.986993630946018,"quality":"auspicious"},{"name":"Roga","start":"07:59","end":"09:18","startHours":7.986993630946018,"endHours":9.297973072383275,"quality":"inauspicious"},{"name":"Udveg","start":"09:18","end":"10:37","startHours":9.297973072383275,"endHours":10.60895251382053,"quality":"inauspicious"},{"name":"Chala","start":"10:37","end":"11:55","startHours":10.60895251382053,"endHours":11.919931955257788,"quality":"neutral"},{"name":"Labha","start":"11:55","end":"13:14","startHours":11.919931955257788,"endHours":13.230911396695042,"quality":"auspicious"},{"name":"Amṛta","start":"13:14","end":"14:33","startHours":13.230911396695042,"endHours":14.5418908381323,"quality":"auspicious"},{"name":"Kāla","start":"14:33","end":"15:51","startHours":14.5418908381323,"endHours":15.852870279569554,"quality":"inauspicious"},{"name":"Śubha","start":"15:51","end":"17:10","startHours":15.852870279569554,"endHours":17.163849721006812,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:10","end":"18:51","startHours":17.163849721006812,"endHours":18.852870279569558,"quality":"auspicious"},{"name":"Kāla","start":"18:51","end":"20:33","startHours":18.852870279569558,"endHours":20.5418908381323,"quality":"inauspicious"},{"name":"Śubha","start":"20:33","end":"22:14","startHours":20.5418908381323,"endHours":22.230911396695042,"quality":"auspicious"},{"name":"Roga","start":"22:14","end":"23:55","startHours":22.230911396695042,"endHours":23.919931955257788,"quality":"inauspicious"},{"name":"Udveg","start":"23:55","end":"01:37","startHours":23.919931955257788,"endHours":25.608952513820533,"quality":"inauspicious"},{"name":"Chala","start":"01:37","end":"03:18","startHours":25.608952513820533,"endHours":27.297973072383275,"quality":"neutral"},{"name":"Labha","start":"03:18","end":"04:59","startHours":27.297973072383275,"endHours":28.986993630946017,"quality":"auspicious"},{"name":"Amṛta","start":"04:59","end":"06:41","startHours":28.986993630946017,"endHours":30.676014189508763,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:41","end":"07:41","startHours":6.676014189508762,"endHours":7.676014189508762,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:41","end":"08:41","startHours":7.676014189508762,"endHours":8.676014189508763,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:41","end":"09:41","startHours":8.676014189508763,"endHours":9.676014189508763,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:41","end":"10:41","startHours":9.676014189508763,"endHours":10.676014189508763,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:41","end":"11:41","startHours":10.676014189508763,"endHours":11.676014189508763,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:41","end":"12:41","startHours":11.676014189508763,"endHours":12.676014189508763,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:41","end":"13:41","startHours":12.676014189508763,"endHours":13.676014189508763,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:41","end":"14:41","startHours":13.676014189508763,"endHours":14.676014189508763,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:41","end":"15:41","startHours":14.676014189508763,"endHours":15.676014189508763,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:41","end":"16:41","startHours":15.676014189508763,"endHours":16.676014189508763,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:41","end":"17:41","startHours":16.676014189508763,"endHours":17.676014189508763,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:41","end":"18:41","startHours":17.676014189508763,"endHours":18.676014189508763,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:41","end":"19:41","startHours":18.676014189508763,"endHours":19.676014189508763,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:41","end":"20:41","startHours":19.676014189508763,"endHours":20.676014189508763,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:41","end":"21:41","startHours":20.676014189508763,"endHours":21.676014189508763,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:41","end":"22:41","startHours":21.676014189508763,"endHours":22.676014189508763,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:41","end":"23:41","startHours":22.676014189508763,"endHours":23.676014189508763,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:41","end":"00:41","startHours":23.676014189508763,"endHours":24.676014189508763,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:41","end":"01:41","startHours":24.676014189508763,"endHours":25.676014189508763,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:41","end":"02:41","startHours":25.676014189508763,"endHours":26.676014189508763,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:41","end":"03:41","startHours":26.676014189508763,"endHours":27.676014189508763,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:41","end":"04:41","startHours":27.676014189508763,"endHours":28.676014189508763,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:41","end":"05:41","startHours":28.676014189508763,"endHours":29.676014189508763,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:41","end":"06:41","startHours":29.676014189508763,"endHours":30.676014189508763,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.99391504475858,"eotMinutes":5.988082684532823,"ayanamsa":23.5868}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"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":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Caturthī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"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":"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":"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 11, 1980 CE · Ayodhyā · Vidhyamitra","description":"December 11, 1980 CE for Ayodhyā: Śukla Caturthī, sūryodaya 06:41, sūryāsta 17:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1980-12-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1980-12-11","sa":"https://sa.vidhyamitra.com/city/ayodhya/1980-12-11","hi":"https://hi.vidhyamitra.com/city/ayodhya/1980-12-11","x-default":"https://vidhyamitra.com/city/ayodhya/1980-12-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T21:00:15.322Z","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":"2026-05-31T21:00:15.322Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T21:00:15.322Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}