{"id":"vidhyamitra:city-day:vrindavan:1817-04-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1817-04-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1817-04-15","date_display":"April 15, 1817 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":1817,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384809.770833,"kali_year":4919,"ahargana":1796344.2708,"sun":{"sidereal_longitude":3.9489,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":346.584,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":342.635,"elapsed_within_tithi_degrees":6.635},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4,"moon_longitude":346.584,"elapsed_within_degrees":13.2506},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":350.5329},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1817,"month":4,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2384809.770833,"ahargana":1796344.2708,"kali_year":4919,"ayanamsa_lahiri":21.3006,"grahas":{"sun":{"sidereal_longitude":3.403686999999991,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":346.475287,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false,"latitude":-3.6601},"mars":{"sidereal_longitude":311.773187,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":0.7740870000000086,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":231.21498700000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":45.85408699999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":true},"saturn":{"sidereal_longitude":313.46908699999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":41.0359,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":221.0359,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":1817,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384809.770833,"kali_year":4919,"ahargana":1796344.2708,"sun":{"sidereal_longitude":3.9489,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":346.584,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":342.635,"elapsed_within_tithi_degrees":6.635},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4,"moon_longitude":346.584,"elapsed_within_degrees":13.2506},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":350.5329},"karana":{"half_tithi_index":57,"name":"Śakuni"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.66,"elongation":17.365},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.66,"opposition_distance":162.635}},"eclipse_window_40days":[]},"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":"05:56","sunsetLocal":"18:44","solarNoonLocal":"12:20","dayLengthHours":12.800757310341481,"dayLengthDisplay":"12 Hours 48 Mins 03 Secs","nightLengthDisplay":"11 Hours 11 Mins 57 Secs","moonriseLocal":"05:03","moonsetLocal":"17:21","rahuKala":{"name":"Rāhu Kāla","start":"15:32","end":"17:08","startHours":15.526904728548821,"endHours":17.126999392341506,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:08","end":"10:44","startHours":9.12652607337808,"endHours":10.726620737170766,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:20","end":"13:56","startHours":12.326715400963451,"endHours":13.926810064756136,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:20","startHours":8.913180118205723,"endHours":9.339872028550438,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:28","end":"06:48","startHours":6.459701633723605,"endHours":6.801055161999378,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:45","startHours":11.900023490618734,"endHours":12.753407311308168,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:13","end":"05:04","startHours":4.219569104413846,"endHours":5.072952925103278,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:52","end":"05:56","startHours":4.85960696993092,"endHours":5.92633674579271,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:19","startHours":14.460174952687032,"endHours":15.313558773376464,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:32","end":"18:56","startHours":18.527094056134192,"endHours":18.92709405613419,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:44","end":"19:16","startHours":18.72709405613419,"endHours":19.260458944065086,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:29","end":"20:14","startHours":18.47709405613419,"endHours":20.22709405613419,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:45","startHours":23.900023490618736,"endHours":24.753407311308166,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:56","end":"07:32","startHours":5.92633674579271,"endHours":7.5264314095853955,"quality":"inauspicious"},{"name":"Udveg","start":"07:32","end":"09:08","startHours":7.5264314095853955,"endHours":9.12652607337808,"quality":"inauspicious"},{"name":"Chala","start":"09:08","end":"10:44","startHours":9.12652607337808,"endHours":10.726620737170766,"quality":"neutral"},{"name":"Labha","start":"10:44","end":"12:20","startHours":10.726620737170766,"endHours":12.326715400963451,"quality":"auspicious"},{"name":"Amṛta","start":"12:20","end":"13:56","startHours":12.326715400963451,"endHours":13.926810064756136,"quality":"auspicious"},{"name":"Kāla","start":"13:56","end":"15:32","startHours":13.926810064756136,"endHours":15.526904728548821,"quality":"inauspicious"},{"name":"Śubha","start":"15:32","end":"17:08","startHours":15.526904728548821,"endHours":17.126999392341506,"quality":"auspicious"},{"name":"Roga","start":"17:08","end":"18:44","startHours":17.126999392341506,"endHours":18.72709405613419,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:44","end":"20:08","startHours":18.72709405613419,"endHours":20.126999392341506,"quality":"inauspicious"},{"name":"Śubha","start":"20:08","end":"21:32","startHours":20.126999392341506,"endHours":21.52690472854882,"quality":"auspicious"},{"name":"Roga","start":"21:32","end":"22:56","startHours":21.52690472854882,"endHours":22.926810064756136,"quality":"inauspicious"},{"name":"Udveg","start":"22:56","end":"00:20","startHours":22.926810064756136,"endHours":24.32671540096345,"quality":"inauspicious"},{"name":"Chala","start":"00:20","end":"01:44","startHours":24.32671540096345,"endHours":25.726620737170766,"quality":"neutral"},{"name":"Labha","start":"01:44","end":"03:08","startHours":25.726620737170766,"endHours":27.12652607337808,"quality":"auspicious"},{"name":"Amṛta","start":"03:08","end":"04:32","startHours":27.12652607337808,"endHours":28.526431409585395,"quality":"auspicious"},{"name":"Kāla","start":"04:32","end":"05:56","startHours":28.526431409585395,"endHours":29.92633674579271,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.92633674579271,"endHours":6.92633674579271,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.92633674579271,"endHours":7.92633674579271,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.92633674579271,"endHours":8.92633674579271,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.92633674579271,"endHours":9.92633674579271,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.92633674579271,"endHours":10.92633674579271,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.92633674579271,"endHours":11.92633674579271,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.92633674579271,"endHours":12.92633674579271,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.92633674579271,"endHours":13.92633674579271,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.92633674579271,"endHours":14.92633674579271,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.92633674579271,"endHours":15.92633674579271,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.92633674579271,"endHours":16.92633674579271,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.92633674579271,"endHours":17.92633674579271,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.92633674579271,"endHours":18.92633674579271,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.92633674579271,"endHours":19.92633674579271,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.92633674579271,"endHours":20.92633674579271,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.92633674579271,"endHours":21.92633674579271,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.92633674579271,"endHours":22.92633674579271,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.92633674579271,"endHours":23.92633674579271,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.92633674579271,"endHours":24.92633674579271,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.92633674579271,"endHours":25.92633674579271,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.92633674579271,"endHours":26.92633674579271,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.92633674579271,"endHours":27.92633674579271,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.92633674579271,"endHours":28.92633674579271,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.92633674579271,"endHours":29.92633674579271,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":9.568482211301218,"eotMinutes":-0.240124057807095,"ayanamsa":21.3006}},"calendars":{"vikram_samvat":1874,"vikram_samvatsara":"Vikṛti","saka_samvat":1739,"saka_samvatsara":"Īśvara","bengali_samvat":1224,"malayalam_era":993,"nanakshahi_year":348,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Caturdaśī · Vikram 1874 Vikṛti · Śaka 1739 Īśvara"},"festivals":[{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 April 15, 1817 CE · Vṛndāvana · Vidhyamitra","description":"April 15, 1817 CE for Vṛndāvana: Kṛṣṇa Caturdaśī, sūryodaya 05:56, sūryāsta 18:44.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1817-04-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1817-04-15","sa":"https://sa.vidhyamitra.com/city/vrindavan/1817-04-15","hi":"https://hi.vidhyamitra.com/city/vrindavan/1817-04-15","x-default":"https://vidhyamitra.com/city/vrindavan/1817-04-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-06T06:21:44.254Z","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":"2026-06-06T06:21:44.254Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-06T06:21:44.254Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}