{"id":"vidhyamitra:city-day:ayodhya:2031-09-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2031-09-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2031-09-20","date_display":"September 20, 2031 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":2031,"month":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2463129.770833,"kali_year":5133,"ahargana":1874664.2708,"sun":{"sidereal_longitude":151.7948,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":191.4887,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":39.6939,"elapsed_within_tithi_degrees":3.6939},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":191.4887,"elapsed_within_degrees":4.822},"yoga":{"number":26,"name":"Indra","sum_longitude":343.2835},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2031,"month":9,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2463129.770833,"ahargana":1874664.2708,"kali_year":5133,"ayanamsa_lahiri":24.2961,"grahas":{"sun":{"sidereal_longitude":152.60688700000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":191.63478699999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false,"latitude":-1.5212},"mars":{"sidereal_longitude":231.231987,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":148.669487,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":236.635987,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":110.88898699999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":58.344487000000015,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":211.2654,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":31.2654,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2031,"month":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2463129.770833,"kali_year":5133,"ahargana":1874664.2708,"sun":{"sidereal_longitude":151.7948,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":191.4887,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":39.6939,"elapsed_within_tithi_degrees":3.6939},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":191.4887,"elapsed_within_degrees":4.822},"yoga":{"number":26,"name":"Indra","sum_longitude":343.2835},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.521,"elongation":39.694},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.521,"opposition_distance":140.306}},"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":"05:48","sunsetLocal":"18:00","solarNoonLocal":"11:54","dayLengthHours":12.207418801871711,"dayLengthDisplay":"12 Hours 12 Mins 27 Secs","nightLengthDisplay":"11 Hours 47 Mins 33 Secs","moonriseLocal":"08:55","moonsetLocal":"20:05","rahuKala":{"name":"Rāhu Kāla","start":"08:51","end":"10:22","startHours":8.845430053506167,"endHours":10.37135740374013,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:25","end":"14:57","startHours":13.423212104208059,"endHours":14.949139454442022,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:48","end":"07:19","startHours":5.793575353038239,"endHours":7.319502703272203,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:03","startHours":8.641973073474972,"endHours":9.048887033537362,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:18","end":"06:38","startHours":6.3022178031162275,"endHours":6.62774897116614,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:29","end":"12:18","startHours":11.490370793911705,"endHours":12.304198714036485,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:10","end":"04:59","startHours":4.165919512788678,"endHours":4.979747432913459,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:47","end":"05:48","startHours":4.776290452882263,"endHours":5.793575353038239,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:45","startHours":13.931854554286048,"endHours":14.74568247441083,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.80099415490995,"endHours":18.20099415490995,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:31","startHours":18.00099415490995,"endHours":18.50963660498794,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.75099415490995,"endHours":19.50099415490995,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:29","end":"00:18","startHours":23.490370793911705,"endHours":24.304198714036485,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:48","end":"07:19","startHours":5.793575353038239,"endHours":7.319502703272203,"quality":"inauspicious"},{"name":"Śubha","start":"07:19","end":"08:51","startHours":7.319502703272203,"endHours":8.845430053506167,"quality":"auspicious"},{"name":"Roga","start":"08:51","end":"10:22","startHours":8.845430053506167,"endHours":10.37135740374013,"quality":"inauspicious"},{"name":"Udveg","start":"10:22","end":"11:54","startHours":10.37135740374013,"endHours":11.897284753974095,"quality":"inauspicious"},{"name":"Chala","start":"11:54","end":"13:25","startHours":11.897284753974095,"endHours":13.423212104208059,"quality":"neutral"},{"name":"Labha","start":"13:25","end":"14:57","startHours":13.423212104208059,"endHours":14.949139454442022,"quality":"auspicious"},{"name":"Amṛta","start":"14:57","end":"16:29","startHours":14.949139454442022,"endHours":16.475066804675986,"quality":"auspicious"},{"name":"Kāla","start":"16:29","end":"18:00","startHours":16.475066804675986,"endHours":18.00099415490995,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:00","end":"19:29","startHours":18.00099415490995,"endHours":19.475066804675986,"quality":"auspicious"},{"name":"Amṛta","start":"19:29","end":"20:57","startHours":19.475066804675986,"endHours":20.949139454442022,"quality":"auspicious"},{"name":"Kāla","start":"20:57","end":"22:25","startHours":20.949139454442022,"endHours":22.42321210420806,"quality":"inauspicious"},{"name":"Śubha","start":"22:25","end":"23:54","startHours":22.42321210420806,"endHours":23.897284753974095,"quality":"auspicious"},{"name":"Roga","start":"23:54","end":"01:22","startHours":23.897284753974095,"endHours":25.37135740374013,"quality":"inauspicious"},{"name":"Udveg","start":"01:22","end":"02:51","startHours":25.37135740374013,"endHours":26.845430053506167,"quality":"inauspicious"},{"name":"Chala","start":"02:51","end":"04:19","startHours":26.845430053506167,"endHours":28.319502703272203,"quality":"neutral"},{"name":"Labha","start":"04:19","end":"05:48","startHours":28.319502703272203,"endHours":29.79357535303824,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:48","end":"06:48","startHours":5.793575353038239,"endHours":6.793575353038239,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:48","end":"07:48","startHours":6.793575353038239,"endHours":7.793575353038239,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:48","end":"08:48","startHours":7.793575353038239,"endHours":8.79357535303824,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:48","end":"09:48","startHours":8.79357535303824,"endHours":9.79357535303824,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:48","end":"10:48","startHours":9.79357535303824,"endHours":10.79357535303824,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:48","end":"11:48","startHours":10.79357535303824,"endHours":11.79357535303824,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:48","end":"12:48","startHours":11.79357535303824,"endHours":12.79357535303824,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:48","end":"13:48","startHours":12.79357535303824,"endHours":13.79357535303824,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:48","end":"14:48","startHours":13.79357535303824,"endHours":14.79357535303824,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:48","end":"15:48","startHours":14.79357535303824,"endHours":15.79357535303824,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:48","end":"16:48","startHours":15.79357535303824,"endHours":16.79357535303824,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:48","end":"17:48","startHours":16.79357535303824,"endHours":17.79357535303824,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:48","end":"18:48","startHours":17.79357535303824,"endHours":18.79357535303824,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:48","end":"19:48","startHours":18.79357535303824,"endHours":19.79357535303824,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:48","end":"20:48","startHours":19.79357535303824,"endHours":20.79357535303824,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:48","end":"21:48","startHours":20.79357535303824,"endHours":21.79357535303824,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:48","end":"22:48","startHours":21.79357535303824,"endHours":22.79357535303824,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:48","end":"23:48","startHours":22.79357535303824,"endHours":23.79357535303824,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:48","end":"00:48","startHours":23.79357535303824,"endHours":24.79357535303824,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:48","end":"01:48","startHours":24.79357535303824,"endHours":25.79357535303824,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:48","end":"02:48","startHours":25.79357535303824,"endHours":26.79357535303824,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:48","end":"03:48","startHours":26.79357535303824,"endHours":27.79357535303824,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:48","end":"04:48","startHours":27.79357535303824,"endHours":28.79357535303824,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:48","end":"05:48","startHours":28.79357535303824,"endHours":29.79357535303824,"planetary_lord":"Mercury"}],"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","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"North","rahuVasa":"East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":1.2312776346319856,"eotMinutes":7.346914761554353,"ayanamsa":24.2961}},"calendars":{"vikram_samvat":2088,"vikram_samvatsara":"Raktākṣī","saka_samvat":1953,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1438,"malayalam_era":1207,"nanakshahi_year":562,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Caturthī · Vikram 2088 Raktākṣī · Śaka 1953 Virodhakṛt"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"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":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 20, 2031 CE · Ayodhyā · Vidhyamitra","description":"September 20, 2031 CE for Ayodhyā: Śukla Caturthī, sūryodaya 05:48, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2031-09-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2031-09-20","sa":"https://sa.vidhyamitra.com/city/ayodhya/2031-09-20","hi":"https://hi.vidhyamitra.com/city/ayodhya/2031-09-20","x-default":"https://vidhyamitra.com/city/ayodhya/2031-09-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T05:53:29.154Z","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":"2026-05-15T05:53:29.154Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T05:53:29.154Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}