{"id":"vidhyamitra:city-day:ayodhya:1680-09-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1680-09-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1680-09-15","date_display":"September 15, 1680 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":1680,"month":9,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2334925.770833,"kali_year":4782,"ahargana":1746460.2708,"sun":{"sidereal_longitude":153.5738,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":56.6994,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":263.1256,"elapsed_within_tithi_degrees":11.1256},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":56.6994,"elapsed_within_degrees":3.3661},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.2732},"karana":{"half_tithi_index":43,"name":"Bava"},"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":1680,"month":9,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2334925.770833,"ahargana":1746460.2708,"kali_year":4782,"ayanamsa_lahiri":19.3928,"grahas":{"sun":{"sidereal_longitude":153.53952200000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":58.555222000000015,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false,"latitude":-4.293},"mars":{"sidereal_longitude":104.18782199999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":166.77342199999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":60.106222,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":160.36902199999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":94.909422,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":164.1303,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":344.1303,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1680,"month":9,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2334925.770833,"kali_year":4782,"ahargana":1746460.2708,"sun":{"sidereal_longitude":153.5738,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":56.6994,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":263.1256,"elapsed_within_tithi_degrees":11.1256},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2,"moon_longitude":56.6994,"elapsed_within_degrees":3.3661},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.2732},"karana":{"half_tithi_index":43,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.293,"elongation":96.874},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.293,"opposition_distance":83.126}},"eclipse_window_40days":[{"offset_days":-6,"type":"lunar","occurs":true,"moon_latitude":1.08,"opposition_distance":2.82}]},"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":"05:46","sunsetLocal":"18:05","solarNoonLocal":"11:56","dayLengthHours":12.313731135950324,"dayLengthDisplay":"12 Hours 18 Mins 49 Secs","nightLengthDisplay":"11 Hours 41 Mins 11 Secs","moonriseLocal":"22:44","moonsetLocal":"12:28","rahuKala":{"name":"Rāhu Kāla","start":"16:33","end":"18:05","startHours":16.545771289591332,"endHours":18.084987681585122,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:56","end":"13:28","startHours":11.928122113609959,"endHours":13.467338505603749,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:00","end":"16:33","startHours":15.006554897597542,"endHours":16.545771289591332,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:03","startHours":8.64446047735654,"endHours":9.054918181888217,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:17","end":"06:37","startHours":6.284328676299395,"endHours":6.612694839924736,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:31","end":"12:20","startHours":11.517664409078284,"endHours":12.338579818141637,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:08","end":"04:57","startHours":4.129425727508088,"endHours":4.950341136571443,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:45","end":"05:46","startHours":4.745112284305605,"endHours":5.771256545634798,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:59","end":"14:48","startHours":13.980410636268346,"endHours":14.8013260453317,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:53","end":"18:17","startHours":17.884987681585123,"endHours":18.284987681585122,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:05","end":"18:36","startHours":18.084987681585122,"endHours":18.59805981224972,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:50","end":"19:35","startHours":17.834987681585122,"endHours":19.584987681585122,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:31","end":"00:20","startHours":23.517664409078282,"endHours":24.338579818141636,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:46","end":"07:19","startHours":5.771256545634798,"endHours":7.310472937628589,"quality":"inauspicious"},{"name":"Chala","start":"07:19","end":"08:51","startHours":7.310472937628589,"endHours":8.849689329622379,"quality":"neutral"},{"name":"Labha","start":"08:51","end":"10:23","startHours":8.849689329622379,"endHours":10.388905721616169,"quality":"auspicious"},{"name":"Amṛta","start":"10:23","end":"11:56","startHours":10.388905721616169,"endHours":11.928122113609959,"quality":"auspicious"},{"name":"Kāla","start":"11:56","end":"13:28","startHours":11.928122113609959,"endHours":13.467338505603749,"quality":"inauspicious"},{"name":"Śubha","start":"13:28","end":"15:00","startHours":13.467338505603749,"endHours":15.006554897597542,"quality":"auspicious"},{"name":"Roga","start":"15:00","end":"16:33","startHours":15.006554897597542,"endHours":16.545771289591332,"quality":"inauspicious"},{"name":"Udveg","start":"16:33","end":"18:05","startHours":16.545771289591332,"endHours":18.084987681585122,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:05","end":"19:33","startHours":18.084987681585122,"endHours":19.545771289591332,"quality":"auspicious"},{"name":"Roga","start":"19:33","end":"21:00","startHours":19.545771289591332,"endHours":21.006554897597542,"quality":"inauspicious"},{"name":"Udveg","start":"21:00","end":"22:28","startHours":21.006554897597542,"endHours":22.46733850560375,"quality":"inauspicious"},{"name":"Chala","start":"22:28","end":"23:56","startHours":22.46733850560375,"endHours":23.92812211360996,"quality":"neutral"},{"name":"Labha","start":"23:56","end":"01:23","startHours":23.92812211360996,"endHours":25.38890572161617,"quality":"auspicious"},{"name":"Amṛta","start":"01:23","end":"02:51","startHours":25.38890572161617,"endHours":26.84968932962238,"quality":"auspicious"},{"name":"Kāla","start":"02:51","end":"04:19","startHours":26.84968932962238,"endHours":28.31047293762859,"quality":"inauspicious"},{"name":"Śubha","start":"04:19","end":"05:46","startHours":28.31047293762859,"endHours":29.7712565456348,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:46","end":"06:46","startHours":5.771256545634798,"endHours":6.771256545634798,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:46","end":"07:46","startHours":6.771256545634798,"endHours":7.771256545634798,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:46","end":"08:46","startHours":7.771256545634798,"endHours":8.771256545634799,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:46","end":"09:46","startHours":8.771256545634799,"endHours":9.771256545634799,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:46","end":"10:46","startHours":9.771256545634799,"endHours":10.771256545634799,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:46","end":"11:46","startHours":10.771256545634799,"endHours":11.771256545634799,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:46","end":"12:46","startHours":11.771256545634799,"endHours":12.771256545634799,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:46","end":"13:46","startHours":12.771256545634799,"endHours":13.771256545634799,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:46","end":"14:46","startHours":13.771256545634799,"endHours":14.771256545634799,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:46","end":"15:46","startHours":14.771256545634799,"endHours":15.771256545634799,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:46","end":"16:46","startHours":15.771256545634799,"endHours":16.7712565456348,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:46","end":"17:46","startHours":16.7712565456348,"endHours":17.7712565456348,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:46","end":"18:46","startHours":17.7712565456348,"endHours":18.7712565456348,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:46","end":"19:46","startHours":18.7712565456348,"endHours":19.7712565456348,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:46","end":"20:46","startHours":19.7712565456348,"endHours":20.7712565456348,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:46","end":"21:46","startHours":20.7712565456348,"endHours":21.7712565456348,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:46","end":"22:46","startHours":21.7712565456348,"endHours":22.7712565456348,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:46","end":"23:46","startHours":22.7712565456348,"endHours":23.7712565456348,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:46","end":"00:46","startHours":23.7712565456348,"endHours":24.7712565456348,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:46","end":"01:46","startHours":24.7712565456348,"endHours":25.7712565456348,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:46","end":"02:46","startHours":25.7712565456348,"endHours":26.7712565456348,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:46","end":"03:46","startHours":26.7712565456348,"endHours":27.7712565456348,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:46","end":"04:46","startHours":27.7712565456348,"endHours":28.7712565456348,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:46","end":"05:46","startHours":28.7712565456348,"endHours":29.7712565456348,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":2.805041840958132,"eotMinutes":5.496673183402374,"ayanamsa":19.3928}},"calendars":{"vikram_samvat":1737,"vikram_samvatsara":"Śrīmukha","saka_samvat":1602,"saka_samvatsara":"Raudra","bengali_samvat":1087,"malayalam_era":856,"nanakshahi_year":211,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Saptamī · Vikram 1737 Śrīmukha · Śaka 1602 Raudra"},"festivals":[],"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":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 15, 1680 CE · Ayodhyā · Vidhyamitra","description":"September 15, 1680 CE for Ayodhyā: Kṛṣṇa Saptamī, sūryodaya 05:46, sūryāsta 18:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1680-09-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1680-09-15","sa":"https://sa.vidhyamitra.com/city/ayodhya/1680-09-15","hi":"https://hi.vidhyamitra.com/city/ayodhya/1680-09-15","x-default":"https://vidhyamitra.com/city/ayodhya/1680-09-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T17:50:59.730Z","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":"2026-06-03T17:50:59.730Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T17:50:59.730Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}