{"id":"vidhyamitra:city-day:ayodhya:1980-09-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1980-09-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-09-04","date_display":"September 4, 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":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444486.770833,"kali_year":5082,"ahargana":1856021.2708,"sun":{"sidereal_longitude":137.4302,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":73.7149,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":296.2847,"elapsed_within_tithi_degrees":8.2847},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":73.7149,"elapsed_within_degrees":7.0483},"yoga":{"number":16,"name":"Siddhi","sum_longitude":211.1451},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"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":9,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444486.770833,"ahargana":1856021.2708,"kali_year":5082,"ayanamsa_lahiri":23.583,"grahas":{"sun":{"sidereal_longitude":138.08128699999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":76.43968699999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false,"latitude":-3.1995},"mars":{"sidereal_longitude":190.51298700000007,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":146.13998700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":145.12048700000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":92.79258700000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":154.01178700000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":119.0613,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":299.0613,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"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":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444486.770833,"kali_year":5082,"ahargana":1856021.2708,"sun":{"sidereal_longitude":137.4302,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":73.7149,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":296.2847,"elapsed_within_tithi_degrees":8.2847},"nakshatra":{"number":6,"name":"Ārdrā","pada":3,"moon_longitude":73.7149,"elapsed_within_degrees":7.0483},"yoga":{"number":16,"name":"Siddhi","sum_longitude":211.1451},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.2,"elongation":63.715},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.2,"opposition_distance":116.285}},"eclipse_window_40days":[{"offset_days":-9,"type":"lunar","occurs":true,"moon_latitude":-0.515,"opposition_distance":2.645}]},"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":"05:41","sunsetLocal":"18:18","solarNoonLocal":"12:00","dayLengthHours":12.612706543425325,"dayLengthDisplay":"12 Hours 36 Mins 46 Secs","nightLengthDisplay":"11 Hours 23 Mins 14 Secs","moonriseLocal":"01:01","moonsetLocal":"14:46","rahuKala":{"name":"Rāhu Kāla","start":"13:34","end":"15:09","startHours":13.571357716307233,"endHours":15.1479460342354,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:41","end":"07:16","startHours":5.688416126666405,"endHours":7.26500444459457,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:50","end":"10:25","startHours":8.841592762522737,"endHours":10.418181080450902,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:38","end":"09:03","startHours":8.63138098679898,"endHours":9.051804538246492,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:13","end":"06:33","startHours":6.213945565975793,"endHours":6.550284407133802,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:34","end":"12:25","startHours":11.574345846931555,"endHours":12.415192949826578,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:00","end":"04:51","startHours":4.006721920876361,"endHours":4.847569023771383,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:38","end":"05:41","startHours":4.6373572480476275,"endHours":5.688416126666405,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:06","end":"14:56","startHours":14.09688715561662,"endHours":14.937734258511643,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:06","end":"18:30","startHours":18.10112267009173,"endHours":18.50112267009173,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:18","end":"18:50","startHours":18.30112267009173,"endHours":18.826652109401117,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:03","end":"19:48","startHours":18.05112267009173,"endHours":19.80112267009173,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:34","end":"00:25","startHours":23.574345846931557,"endHours":24.415192949826576,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:41","end":"07:16","startHours":5.688416126666405,"endHours":7.26500444459457,"quality":"auspicious"},{"name":"Roga","start":"07:16","end":"08:50","startHours":7.26500444459457,"endHours":8.841592762522737,"quality":"inauspicious"},{"name":"Udveg","start":"08:50","end":"10:25","startHours":8.841592762522737,"endHours":10.418181080450902,"quality":"inauspicious"},{"name":"Chala","start":"10:25","end":"12:00","startHours":10.418181080450902,"endHours":11.994769398379066,"quality":"neutral"},{"name":"Labha","start":"12:00","end":"13:34","startHours":11.994769398379066,"endHours":13.571357716307233,"quality":"auspicious"},{"name":"Amṛta","start":"13:34","end":"15:09","startHours":13.571357716307233,"endHours":15.1479460342354,"quality":"auspicious"},{"name":"Kāla","start":"15:09","end":"16:43","startHours":15.1479460342354,"endHours":16.724534352163563,"quality":"inauspicious"},{"name":"Śubha","start":"16:43","end":"18:18","startHours":16.724534352163563,"endHours":18.30112267009173,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:18","end":"19:43","startHours":18.30112267009173,"endHours":19.724534352163563,"quality":"auspicious"},{"name":"Kāla","start":"19:43","end":"21:09","startHours":19.724534352163563,"endHours":21.147946034235396,"quality":"inauspicious"},{"name":"Śubha","start":"21:09","end":"22:34","startHours":21.147946034235396,"endHours":22.571357716307233,"quality":"auspicious"},{"name":"Roga","start":"22:34","end":"00:00","startHours":22.571357716307233,"endHours":23.994769398379066,"quality":"inauspicious"},{"name":"Udveg","start":"00:00","end":"01:25","startHours":23.994769398379066,"endHours":25.4181810804509,"quality":"inauspicious"},{"name":"Chala","start":"01:25","end":"02:50","startHours":25.4181810804509,"endHours":26.841592762522737,"quality":"neutral"},{"name":"Labha","start":"02:50","end":"04:16","startHours":26.841592762522737,"endHours":28.26500444459457,"quality":"auspicious"},{"name":"Amṛta","start":"04:16","end":"05:41","startHours":28.26500444459457,"endHours":29.688416126666404,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:41","end":"06:41","startHours":5.688416126666405,"endHours":6.688416126666405,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:41","end":"07:41","startHours":6.688416126666405,"endHours":7.688416126666405,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:41","end":"08:41","startHours":7.688416126666405,"endHours":8.688416126666404,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:41","end":"09:41","startHours":8.688416126666404,"endHours":9.688416126666404,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:41","end":"10:41","startHours":9.688416126666404,"endHours":10.688416126666404,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:41","end":"11:41","startHours":10.688416126666404,"endHours":11.688416126666404,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:41","end":"12:41","startHours":11.688416126666404,"endHours":12.688416126666404,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:41","end":"13:41","startHours":12.688416126666404,"endHours":13.688416126666404,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:41","end":"14:41","startHours":13.688416126666404,"endHours":14.688416126666404,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:41","end":"15:41","startHours":14.688416126666404,"endHours":15.688416126666404,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:41","end":"16:41","startHours":15.688416126666404,"endHours":16.688416126666404,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:41","end":"17:41","startHours":16.688416126666404,"endHours":17.688416126666404,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:41","end":"18:41","startHours":17.688416126666404,"endHours":18.688416126666404,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:41","end":"19:41","startHours":18.688416126666404,"endHours":19.688416126666404,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:41","end":"20:41","startHours":19.688416126666404,"endHours":20.688416126666404,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:41","end":"21:41","startHours":20.688416126666404,"endHours":21.688416126666404,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:41","end":"22:41","startHours":21.688416126666404,"endHours":22.688416126666404,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:41","end":"23:41","startHours":22.688416126666404,"endHours":23.688416126666404,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:41","end":"00:41","startHours":23.688416126666404,"endHours":24.688416126666404,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:41","end":"01:41","startHours":24.688416126666404,"endHours":25.688416126666404,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:41","end":"02:41","startHours":25.688416126666404,"endHours":26.688416126666404,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:41","end":"03:41","startHours":26.688416126666404,"endHours":27.688416126666404,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:41","end":"04:41","startHours":27.688416126666404,"endHours":28.688416126666404,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:41","end":"05:41","startHours":28.688416126666404,"endHours":29.688416126666404,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":7.187705342435618,"eotMinutes":1.4978360972560227,"ayanamsa":23.583}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Daśamī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[],"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 September 4, 1980 CE · Ayodhyā · Vidhyamitra","description":"September 4, 1980 CE for Ayodhyā: Kṛṣṇa Daśamī, sūryodaya 05:41, sūryāsta 18:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1980-09-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1980-09-04","sa":"https://sa.vidhyamitra.com/city/ayodhya/1980-09-04","hi":"https://hi.vidhyamitra.com/city/ayodhya/1980-09-04","x-default":"https://vidhyamitra.com/city/ayodhya/1980-09-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:09:46.496Z","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":"2026-05-31T19:09:46.496Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:09:46.496Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}