{"id":"vidhyamitra:city-day:vrindavan:2015-09-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/2015-09-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2015-09-17","date_display":"September 17, 2015 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":2015,"month":9,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457282.770833,"kali_year":5117,"ahargana":1868817.2708,"sun":{"sidereal_longitude":149.009,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":193.5536,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":44.5446,"elapsed_within_tithi_degrees":8.5446},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":193.5536,"elapsed_within_degrees":6.8869},"yoga":{"number":26,"name":"Indra","sum_longitude":342.5625},"karana":{"half_tithi_index":7,"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":2015,"month":9,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457282.770833,"ahargana":1868817.2708,"kali_year":5117,"ayanamsa_lahiri":24.0724,"grahas":{"sun":{"sidereal_longitude":149.776885,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":190.51248499999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false,"latitude":2.4151},"mars":{"sidereal_longitude":120.685385,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":171.83908500000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":133.09758499999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":112.07138500000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":215.629685,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":161.0676,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":341.0676,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"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":2015,"month":9,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457282.770833,"kali_year":5117,"ahargana":1868817.2708,"sun":{"sidereal_longitude":149.009,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":193.5536,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":44.5446,"elapsed_within_tithi_degrees":8.5446},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":193.5536,"elapsed_within_degrees":6.8869},"yoga":{"number":26,"name":"Indra","sum_longitude":342.5625},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.415,"elongation":44.545},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.415,"opposition_distance":135.455}},"eclipse_window_40days":[{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":-1.372,"elongation":1.608},{"offset_days":11,"type":"lunar","occurs":true,"moon_latitude":0.154,"opposition_distance":1.236}]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:04","sunsetLocal":"18:22","solarNoonLocal":"12:13","dayLengthHours":12.295567927226788,"dayLengthDisplay":"12 Hours 17 Mins 44 Secs","nightLengthDisplay":"11 Hours 42 Mins 16 Secs","moonriseLocal":"09:21","moonsetLocal":"20:31","rahuKala":{"name":"Rāhu Kāla","start":"13:45","end":"15:18","startHours":13.755666594980552,"endHours":15.292612585883901,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:04","end":"07:36","startHours":6.07093664046381,"endHours":7.607882631367158,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:09","end":"10:41","startHours":9.144828622270506,"endHours":10.681774613173856,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:56","end":"09:21","startHours":8.939902490150061,"endHours":9.349754754390954,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:35","end":"06:55","startHours":6.583251970764926,"endHours":6.91113378215764,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:38","startHours":11.80886833983631,"endHours":12.628572868318097,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:26","end":"05:15","startHours":4.4315275835002375,"endHours":5.2512321119820236,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:03","end":"06:04","startHours":5.046305979861577,"endHours":6.07093664046381,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:16","end":"15:05","startHours":14.267981925281669,"endHours":15.087686453763455,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:10","end":"18:34","startHours":18.1665045676906,"endHours":18.566504567690597,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:22","end":"18:53","startHours":18.366504567690598,"endHours":18.878819897991715,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:07","end":"19:52","startHours":18.116504567690598,"endHours":19.866504567690598,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:38","startHours":23.808868339836312,"endHours":24.6285728683181,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:04","end":"07:36","startHours":6.07093664046381,"endHours":7.607882631367158,"quality":"auspicious"},{"name":"Roga","start":"07:36","end":"09:09","startHours":7.607882631367158,"endHours":9.144828622270506,"quality":"inauspicious"},{"name":"Udveg","start":"09:09","end":"10:41","startHours":9.144828622270506,"endHours":10.681774613173856,"quality":"inauspicious"},{"name":"Chala","start":"10:41","end":"12:13","startHours":10.681774613173856,"endHours":12.218720604077204,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:45","startHours":12.218720604077204,"endHours":13.755666594980552,"quality":"auspicious"},{"name":"Amṛta","start":"13:45","end":"15:18","startHours":13.755666594980552,"endHours":15.292612585883901,"quality":"auspicious"},{"name":"Kāla","start":"15:18","end":"16:50","startHours":15.292612585883901,"endHours":16.82955857678725,"quality":"inauspicious"},{"name":"Śubha","start":"16:50","end":"18:22","startHours":16.82955857678725,"endHours":18.366504567690598,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:22","end":"19:50","startHours":18.366504567690598,"endHours":19.82955857678725,"quality":"auspicious"},{"name":"Kāla","start":"19:50","end":"21:18","startHours":19.82955857678725,"endHours":21.2926125858839,"quality":"inauspicious"},{"name":"Śubha","start":"21:18","end":"22:45","startHours":21.2926125858839,"endHours":22.755666594980553,"quality":"auspicious"},{"name":"Roga","start":"22:45","end":"00:13","startHours":22.755666594980553,"endHours":24.218720604077205,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:41","startHours":24.218720604077205,"endHours":25.681774613173857,"quality":"inauspicious"},{"name":"Chala","start":"01:41","end":"03:09","startHours":25.681774613173857,"endHours":27.144828622270506,"quality":"neutral"},{"name":"Labha","start":"03:09","end":"04:36","startHours":27.144828622270506,"endHours":28.607882631367158,"quality":"auspicious"},{"name":"Amṛta","start":"04:36","end":"06:04","startHours":28.607882631367158,"endHours":30.07093664046381,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:04","end":"07:04","startHours":6.07093664046381,"endHours":7.07093664046381,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:04","end":"08:04","startHours":7.07093664046381,"endHours":8.07093664046381,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:04","end":"09:04","startHours":8.07093664046381,"endHours":9.07093664046381,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:04","end":"10:04","startHours":9.07093664046381,"endHours":10.07093664046381,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:04","end":"11:04","startHours":10.07093664046381,"endHours":11.07093664046381,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:04","end":"12:04","startHours":11.07093664046381,"endHours":12.07093664046381,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:04","end":"13:04","startHours":12.07093664046381,"endHours":13.07093664046381,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:04","end":"14:04","startHours":13.07093664046381,"endHours":14.07093664046381,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:04","end":"15:04","startHours":14.07093664046381,"endHours":15.07093664046381,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:04","end":"16:04","startHours":15.07093664046381,"endHours":16.07093664046381,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:04","end":"17:04","startHours":16.07093664046381,"endHours":17.07093664046381,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:04","end":"18:04","startHours":17.07093664046381,"endHours":18.07093664046381,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:04","end":"19:04","startHours":18.07093664046381,"endHours":19.07093664046381,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:04","end":"20:04","startHours":19.07093664046381,"endHours":20.07093664046381,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:04","end":"21:04","startHours":20.07093664046381,"endHours":21.07093664046381,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:04","end":"22:04","startHours":21.07093664046381,"endHours":22.07093664046381,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:04","end":"23:04","startHours":22.07093664046381,"endHours":23.07093664046381,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:04","end":"00:04","startHours":23.07093664046381,"endHours":24.07093664046381,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:04","end":"01:04","startHours":24.07093664046381,"endHours":25.07093664046381,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:04","end":"02:04","startHours":25.07093664046381,"endHours":26.07093664046381,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:04","end":"03:04","startHours":26.07093664046381,"endHours":27.07093664046381,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:04","end":"04:04","startHours":27.07093664046381,"endHours":28.07093664046381,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:04","end":"05:04","startHours":28.07093664046381,"endHours":29.07093664046381,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:04","end":"06:04","startHours":29.07093664046381,"endHours":30.07093664046381,"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","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North","rahuVasa":"North-West","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"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":2.442382704653887,"eotMinutes":6.239563755367786,"ayanamsa":24.0724}},"calendars":{"vikram_samvat":2072,"vikram_samvatsara":"Kīlaka","saka_samvat":1937,"saka_samvatsara":"Manmatha","bengali_samvat":1422,"malayalam_era":1191,"nanakshahi_year":546,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Caturthī · Vikram 2072 Kīlaka · Śaka 1937 Manmatha"},"festivals":[{"id":"ganesha-chaturthi","name":"Gaṇeśa Caturthī","name_sanskrit":"गणेश चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Gaṇeśa's birth day; 11-day festival in Maharashtra.","vrata":false,"detection":{"tithi_number":4,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":1},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5},{"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":"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":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga September 17, 2015 CE · Vṛndāvana · Vidhyamitra","description":"September 17, 2015 CE for Vṛndāvana: Śukla Caturthī, sūryodaya 06:04, sūryāsta 18:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2015-09-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2015-09-17","sa":"https://sa.vidhyamitra.com/city/vrindavan/2015-09-17","hi":"https://hi.vidhyamitra.com/city/vrindavan/2015-09-17","x-default":"https://vidhyamitra.com/city/vrindavan/2015-09-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T13:03:29.266Z","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":"2026-05-15T13:03:29.266Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T13:03:29.266Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}