{"id":"vidhyamitra:city-day:ayodhya:1980-12-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1980-12-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-12-09","date_display":"December 9, 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":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444582.770833,"kali_year":5082,"ahargana":1856117.2708,"sun":{"sidereal_longitude":233.1511,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":250.0681,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":16.917,"elapsed_within_tithi_degrees":4.917},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":250.0681,"elapsed_within_degrees":10.0681},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":123.2192},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444582.770833,"ahargana":1856117.2708,"kali_year":5082,"ayanamsa_lahiri":23.5867,"grahas":{"sun":{"sidereal_longitude":233.53901900000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":250.07491900000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false,"latitude":3.119},"mars":{"sidereal_longitude":259.713219,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":221.50731900000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":163.592619,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":205.22961899999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":164.498919,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":113.9747,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":293.9747,"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":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444582.770833,"kali_year":5082,"ahargana":1856117.2708,"sun":{"sidereal_longitude":233.1511,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":250.0681,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":16.917,"elapsed_within_tithi_degrees":4.917},"nakshatra":{"number":19,"name":"Mūla","pada":4,"moon_longitude":250.0681,"elapsed_within_degrees":10.0681},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":123.2192},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.119,"elongation":16.917},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.119,"opposition_distance":163.083}},"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":10.502248365151708,"dayLengthDisplay":"10 Hours 30 Mins 08 Secs","nightLengthDisplay":"13 Hours 29 Mins 52 Secs","moonriseLocal":"07:48","moonsetLocal":"18:13","rahuKala":{"name":"Rāhu Kāla","start":"14:32","end":"15:51","startHours":14.530847717151243,"endHours":15.843628762795205,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:17","end":"10:36","startHours":9.279723534575389,"endHours":10.592504580219352,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:54","end":"13:13","startHours":11.905285625863314,"endHours":13.218066671507279,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:06","end":"09:27","startHours":9.10468606182286,"endHours":9.454761007327917,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:06","end":"07:22","startHours":7.091755125168782,"endHours":7.371815081572827,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:33","end":"12:15","startHours":11.555210680358257,"endHours":12.25536057136837,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:15","end":"05:57","startHours":5.2538616612672335,"endHours":5.954011552277347,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:47","end":"06:39","startHours":5.778974079524819,"endHours":6.654161443287461,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:39","end":"14:21","startHours":13.6556603533886,"endHours":14.355810244398713,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:57","end":"17:21","startHours":16.95640980843917,"endHours":17.356409808439167,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:09","end":"17:36","startHours":17.156409808439168,"endHours":17.59400349032049,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:54","end":"18:39","startHours":16.906409808439168,"endHours":18.656409808439168,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:33","end":"00:15","startHours":23.555210680358257,"endHours":24.25536057136837,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:39","end":"07:58","startHours":6.654161443287461,"endHours":7.966942488931425,"quality":"inauspicious"},{"name":"Udveg","start":"07:58","end":"09:17","startHours":7.966942488931425,"endHours":9.279723534575389,"quality":"inauspicious"},{"name":"Chala","start":"09:17","end":"10:36","startHours":9.279723534575389,"endHours":10.592504580219352,"quality":"neutral"},{"name":"Labha","start":"10:36","end":"11:54","startHours":10.592504580219352,"endHours":11.905285625863314,"quality":"auspicious"},{"name":"Amṛta","start":"11:54","end":"13:13","startHours":11.905285625863314,"endHours":13.218066671507279,"quality":"auspicious"},{"name":"Kāla","start":"13:13","end":"14:32","startHours":13.218066671507279,"endHours":14.530847717151243,"quality":"inauspicious"},{"name":"Śubha","start":"14:32","end":"15:51","startHours":14.530847717151243,"endHours":15.843628762795205,"quality":"auspicious"},{"name":"Roga","start":"15:51","end":"17:09","startHours":15.843628762795205,"endHours":17.156409808439168,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:09","end":"18:51","startHours":17.156409808439168,"endHours":18.843628762795205,"quality":"inauspicious"},{"name":"Śubha","start":"18:51","end":"20:32","startHours":18.843628762795205,"endHours":20.53084771715124,"quality":"auspicious"},{"name":"Roga","start":"20:32","end":"22:13","startHours":20.53084771715124,"endHours":22.218066671507277,"quality":"inauspicious"},{"name":"Udveg","start":"22:13","end":"23:54","startHours":22.218066671507277,"endHours":23.905285625863314,"quality":"inauspicious"},{"name":"Chala","start":"23:54","end":"01:36","startHours":23.905285625863314,"endHours":25.59250458021935,"quality":"neutral"},{"name":"Labha","start":"01:36","end":"03:17","startHours":25.59250458021935,"endHours":27.27972353457539,"quality":"auspicious"},{"name":"Amṛta","start":"03:17","end":"04:58","startHours":27.27972353457539,"endHours":28.966942488931423,"quality":"auspicious"},{"name":"Kāla","start":"04:58","end":"06:39","startHours":28.966942488931423,"endHours":30.65416144328746,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:39","end":"07:39","startHours":6.654161443287461,"endHours":7.654161443287461,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:39","end":"08:39","startHours":7.654161443287461,"endHours":8.65416144328746,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:39","end":"09:39","startHours":8.65416144328746,"endHours":9.65416144328746,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:39","end":"10:39","startHours":9.65416144328746,"endHours":10.65416144328746,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:39","end":"11:39","startHours":10.65416144328746,"endHours":11.65416144328746,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:39","end":"12:39","startHours":11.65416144328746,"endHours":12.65416144328746,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:39","end":"13:39","startHours":12.65416144328746,"endHours":13.65416144328746,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:39","end":"14:39","startHours":13.65416144328746,"endHours":14.65416144328746,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:39","end":"15:39","startHours":14.65416144328746,"endHours":15.65416144328746,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:39","end":"16:39","startHours":15.65416144328746,"endHours":16.65416144328746,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:39","end":"17:39","startHours":16.65416144328746,"endHours":17.65416144328746,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:39","end":"18:39","startHours":17.65416144328746,"endHours":18.65416144328746,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:39","end":"19:39","startHours":18.65416144328746,"endHours":19.65416144328746,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:39","end":"20:39","startHours":19.65416144328746,"endHours":20.65416144328746,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:39","end":"21:39","startHours":20.65416144328746,"endHours":21.65416144328746,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:39","end":"22:39","startHours":21.65416144328746,"endHours":22.65416144328746,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:39","end":"23:39","startHours":22.65416144328746,"endHours":23.65416144328746,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:39","end":"00:39","startHours":23.65416144328746,"endHours":24.65416144328746,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:39","end":"01:39","startHours":24.65416144328746,"endHours":25.65416144328746,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:39","end":"02:39","startHours":25.65416144328746,"endHours":26.65416144328746,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:39","end":"03:39","startHours":26.65416144328746,"endHours":27.65416144328746,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:39","end":"04:39","startHours":27.65416144328746,"endHours":28.65416144328746,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:39","end":"05:39","startHours":28.65416144328746,"endHours":29.65416144328746,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:39","end":"06:39","startHours":29.65416144328746,"endHours":30.65416144328746,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Sushira","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":-22.81357477970509,"eotMinutes":6.866862448201248,"ayanamsa":23.5867}},"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 Dvitīyā · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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, 1980 CE · Ayodhyā · Vidhyamitra","description":"December 9, 1980 CE for Ayodhyā: Śukla Dvitīyā, sūryodaya 06:39, sūryāsta 17:09.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1980-12-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1980-12-09","sa":"https://sa.vidhyamitra.com/city/ayodhya/1980-12-09","hi":"https://hi.vidhyamitra.com/city/ayodhya/1980-12-09","x-default":"https://vidhyamitra.com/city/ayodhya/1980-12-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T12:27:54.175Z","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":"2026-06-02T12:27:54.175Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T12:27:54.175Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}