{"id":"vidhyamitra:city-day:ayodhya:-3173-08-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/-3173-08-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"-3173-08-13","date_display":"August 13, 3174 BCE","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":-3173,"month":8,"day":13,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":562343.770833,"kali_year":-71,"ahargana":-26121.7292,"sun":{"sidereal_longitude":171.9934,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":336.321,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":164.3276,"elapsed_within_tithi_degrees":8.3276},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":336.321,"elapsed_within_degrees":2.9876},"yoga":{"number":12,"name":"Dhruva","sum_longitude":148.3144},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":-3173,"month":8,"day":13,"hour":6,"minute":30,"calendar":"julian"},"julian_day":562343.770833,"ahargana":-26121.7292,"kali_year":-71,"ayanamsa_lahiri":-48.4019,"grahas":{"sun":{"sidereal_longitude":171.9934,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"moon":{"sidereal_longitude":336.321,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false,"latitude":-2.4006},"mars":{"sidereal_longitude":10.2387,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":165.4391,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":349.6845,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":210.8997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":208.3655,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":124.0549,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":304.0549,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":-3173,"month":8,"day":13,"hour":6,"minute":30,"second":0,"calendar":"julian"},"julian_day":562343.770833,"kali_year":-71,"ahargana":-26121.7292,"sun":{"sidereal_longitude":171.9934,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":336.321,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":164.3276,"elapsed_within_tithi_degrees":8.3276},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":336.321,"elapsed_within_degrees":2.9876},"yoga":{"number":12,"name":"Dhruva","sum_longitude":148.3144},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.401,"elongation":164.328},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.401,"opposition_distance":15.672}},"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":"05:21","sunsetLocal":"18:51","solarNoonLocal":"12:06","dayLengthHours":13.496420088942552,"dayLengthDisplay":"13 Hours 29 Mins 47 Secs","nightLengthDisplay":"10 Hours 30 Mins 13 Secs","moonriseLocal":"17:48","moonsetLocal":"04:18","rahuKala":{"name":"Rāhu Kāla","start":"17:09","end":"18:51","startHours":17.156916212323715,"endHours":18.843968723441535,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:06","end":"13:47","startHours":12.09575867897026,"endHours":13.782811190088077,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:28","end":"17:09","startHours":15.469863701205897,"endHours":17.156916212323715,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:30","end":"08:57","startHours":8.49671332191891,"endHours":8.94659399155033,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:55","end":"06:16","startHours":5.909899471538256,"endHours":6.2698040072433905,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:33","startHours":11.64587800933884,"endHours":12.545639348601679,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:27","startHours":3.5480259559733094,"endHours":4.447787295236147,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:13","end":"05:21","startHours":4.222846960420437,"endHours":5.347548634498983,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:15","startHours":14.34516202712735,"endHours":15.244923366390186,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:39","end":"19:03","startHours":18.643968723441535,"endHours":19.043968723441534,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:51","end":"19:24","startHours":18.843968723441535,"endHours":19.406319560480807,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:36","end":"20:21","startHours":18.593968723441535,"endHours":20.343968723441535,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:33","startHours":23.64587800933884,"endHours":24.54563934860168,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:21","end":"07:02","startHours":5.347548634498983,"endHours":7.034601145616802,"quality":"inauspicious"},{"name":"Chala","start":"07:02","end":"08:43","startHours":7.034601145616802,"endHours":8.72165365673462,"quality":"neutral"},{"name":"Labha","start":"08:43","end":"10:25","startHours":8.72165365673462,"endHours":10.40870616785244,"quality":"auspicious"},{"name":"Amṛta","start":"10:25","end":"12:06","startHours":10.40870616785244,"endHours":12.09575867897026,"quality":"auspicious"},{"name":"Kāla","start":"12:06","end":"13:47","startHours":12.09575867897026,"endHours":13.782811190088077,"quality":"inauspicious"},{"name":"Śubha","start":"13:47","end":"15:28","startHours":13.782811190088077,"endHours":15.469863701205897,"quality":"auspicious"},{"name":"Roga","start":"15:28","end":"17:09","startHours":15.469863701205897,"endHours":17.156916212323715,"quality":"inauspicious"},{"name":"Udveg","start":"17:09","end":"18:51","startHours":17.156916212323715,"endHours":18.843968723441535,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:51","end":"20:09","startHours":18.843968723441535,"endHours":20.156916212323715,"quality":"auspicious"},{"name":"Roga","start":"20:09","end":"21:28","startHours":20.156916212323715,"endHours":21.469863701205895,"quality":"inauspicious"},{"name":"Udveg","start":"21:28","end":"22:47","startHours":21.469863701205895,"endHours":22.782811190088076,"quality":"inauspicious"},{"name":"Chala","start":"22:47","end":"00:06","startHours":22.782811190088076,"endHours":24.09575867897026,"quality":"neutral"},{"name":"Labha","start":"00:06","end":"01:25","startHours":24.09575867897026,"endHours":25.40870616785244,"quality":"auspicious"},{"name":"Amṛta","start":"01:25","end":"02:43","startHours":25.40870616785244,"endHours":26.72165365673462,"quality":"auspicious"},{"name":"Kāla","start":"02:43","end":"04:02","startHours":26.72165365673462,"endHours":28.034601145616804,"quality":"inauspicious"},{"name":"Śubha","start":"04:02","end":"05:21","startHours":28.034601145616804,"endHours":29.347548634498985,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:21","end":"06:21","startHours":5.347548634498983,"endHours":6.347548634498983,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:21","end":"07:21","startHours":6.347548634498983,"endHours":7.347548634498983,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:21","end":"08:21","startHours":7.347548634498983,"endHours":8.347548634498983,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:21","end":"09:21","startHours":8.347548634498983,"endHours":9.347548634498983,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:21","end":"10:21","startHours":9.347548634498983,"endHours":10.347548634498983,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:21","end":"11:21","startHours":10.347548634498983,"endHours":11.347548634498983,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:21","end":"12:21","startHours":11.347548634498983,"endHours":12.347548634498983,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:21","end":"13:21","startHours":12.347548634498983,"endHours":13.347548634498983,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:21","end":"14:21","startHours":13.347548634498983,"endHours":14.347548634498983,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:21","end":"15:21","startHours":14.347548634498983,"endHours":15.347548634498983,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:21","end":"16:21","startHours":15.347548634498983,"endHours":16.347548634498985,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:21","end":"17:21","startHours":16.347548634498985,"endHours":17.347548634498985,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:21","end":"18:21","startHours":17.347548634498985,"endHours":18.347548634498985,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:21","end":"19:21","startHours":18.347548634498985,"endHours":19.347548634498985,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:21","end":"20:21","startHours":19.347548634498985,"endHours":20.347548634498985,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:21","end":"21:21","startHours":20.347548634498985,"endHours":21.347548634498985,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:21","end":"22:21","startHours":21.347548634498985,"endHours":22.347548634498985,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:21","end":"23:21","startHours":22.347548634498985,"endHours":23.347548634498985,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:21","end":"00:21","startHours":23.347548634498985,"endHours":24.347548634498985,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:21","end":"01:21","startHours":24.347548634498985,"endHours":25.347548634498985,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:21","end":"02:21","startHours":25.347548634498985,"endHours":26.347548634498985,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:21","end":"03:21","startHours":26.347548634498985,"endHours":27.347548634498985,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:21","end":"04:21","startHours":27.347548634498985,"endHours":28.347548634498985,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:21","end":"05:21","startHours":28.347548634498985,"endHours":29.347548634498985,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":19.348456088082248,"eotMinutes":-4.561520738215509,"ayanamsa":-48.4019}},"calendars":{"vikram_samvat":-3116,"saka_samvat":-3251,"saka_samvatsara":"Prabhava","bengali_samvat":-3766,"malayalam_era":-3997,"nanakshahi_year":-4642,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Caturdaśī · Vikram -3116 undefined · Śaka -3251 Prabhava"},"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}],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":true,"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 August 13, 3174 BCE · Ayodhyā · Vidhyamitra","description":"August 13, 3174 BCE for Ayodhyā: Śukla Caturdaśī, sūryodaya 05:21, sūryāsta 18:51.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/-3173-08-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/-3173-08-13","sa":"https://sa.vidhyamitra.com/city/ayodhya/-3173-08-13","hi":"https://hi.vidhyamitra.com/city/ayodhya/-3173-08-13","x-default":"https://vidhyamitra.com/city/ayodhya/-3173-08-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T15:04:46.811Z","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":"2026-05-19T15:04:46.811Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T15:04:46.811Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}