{"id":"vidhyamitra:city-day:vrindavan:1815-04-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1815-04-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1815-04-10","date_display":"April 10, 1815 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":1815,"month":4,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384073.770833,"kali_year":4916,"ahargana":1795608.2708,"sun":{"sidereal_longitude":358.5999,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":1.2763,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":2.6764,"elapsed_within_tithi_degrees":2.6764},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":1.2763,"elapsed_within_degrees":1.2763},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":359.8762},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1815,"month":4,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2384073.770833,"ahargana":1795608.2708,"kali_year":4916,"ayanamsa_lahiri":21.2725,"grahas":{"sun":{"sidereal_longitude":358.031507,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":1.3429069999999683,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":-4.4135},"mars":{"sidereal_longitude":288.350507,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":333.2364070000001,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":164.129007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":25.748807,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":291.416207,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":80.0327,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":260.0327,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":1815,"month":4,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384073.770833,"kali_year":4916,"ahargana":1795608.2708,"sun":{"sidereal_longitude":358.5999,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":1.2763,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":2.6764,"elapsed_within_tithi_degrees":2.6764},"nakshatra":{"number":1,"name":"Aśvinī","pada":1,"moon_longitude":1.2763,"elapsed_within_degrees":1.2763},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":359.8762},"karana":{"half_tithi_index":0,"name":"Kiṃstughna"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.413,"elongation":2.676},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.413,"opposition_distance":177.324}},"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":"06:01","sunsetLocal":"18:41","solarNoonLocal":"12:21","dayLengthHours":12.656113751128707,"dayLengthDisplay":"12 Hours 39 Mins 22 Secs","nightLengthDisplay":"11 Hours 20 Mins 38 Secs","moonriseLocal":"06:13","moonsetLocal":"18:55","rahuKala":{"name":"Rāhu Kāla","start":"07:36","end":"09:11","startHours":7.603454936079486,"endHours":9.185469154970574,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:46","end":"12:21","startHours":10.767483373861662,"endHours":12.349497592752751,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:56","end":"15:31","startHours":13.93151181164384,"endHours":15.513526030534928,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:58","end":"09:24","startHours":8.974533925785096,"endHours":9.396404384156053,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:33","end":"06:53","startHours":6.5487787901520935,"endHours":6.886275156848859,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:46","startHours":11.927627134381794,"endHours":12.771368051123709,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:20","end":"05:11","startHours":4.33395888370457,"endHours":5.177699800446484,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:58","end":"06:01","startHours":4.966764571261006,"endHours":6.021440717188398,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:18","startHours":14.458849884607535,"endHours":15.302590801349448,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:29","end":"18:53","startHours":18.477554468317106,"endHours":18.877554468317104,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:41","end":"19:12","startHours":18.677554468317105,"endHours":19.204892541280802,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:26","end":"20:11","startHours":18.427554468317105,"endHours":20.177554468317105,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:46","startHours":23.927627134381794,"endHours":24.77136805112371,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:01","end":"07:36","startHours":6.021440717188398,"endHours":7.603454936079486,"quality":"auspicious"},{"name":"Kāla","start":"07:36","end":"09:11","startHours":7.603454936079486,"endHours":9.185469154970574,"quality":"inauspicious"},{"name":"Śubha","start":"09:11","end":"10:46","startHours":9.185469154970574,"endHours":10.767483373861662,"quality":"auspicious"},{"name":"Roga","start":"10:46","end":"12:21","startHours":10.767483373861662,"endHours":12.349497592752751,"quality":"inauspicious"},{"name":"Udveg","start":"12:21","end":"13:56","startHours":12.349497592752751,"endHours":13.93151181164384,"quality":"inauspicious"},{"name":"Chala","start":"13:56","end":"15:31","startHours":13.93151181164384,"endHours":15.513526030534928,"quality":"neutral"},{"name":"Labha","start":"15:31","end":"17:06","startHours":15.513526030534928,"endHours":17.095540249426016,"quality":"auspicious"},{"name":"Amṛta","start":"17:06","end":"18:41","startHours":17.095540249426016,"endHours":18.677554468317105,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:41","end":"20:06","startHours":18.677554468317105,"endHours":20.095540249426016,"quality":"neutral"},{"name":"Labha","start":"20:06","end":"21:31","startHours":20.095540249426016,"endHours":21.513526030534926,"quality":"auspicious"},{"name":"Amṛta","start":"21:31","end":"22:56","startHours":21.513526030534926,"endHours":22.93151181164384,"quality":"auspicious"},{"name":"Kāla","start":"22:56","end":"00:21","startHours":22.93151181164384,"endHours":24.34949759275275,"quality":"inauspicious"},{"name":"Śubha","start":"00:21","end":"01:46","startHours":24.34949759275275,"endHours":25.767483373861662,"quality":"auspicious"},{"name":"Roga","start":"01:46","end":"03:11","startHours":25.767483373861662,"endHours":27.185469154970576,"quality":"inauspicious"},{"name":"Udveg","start":"03:11","end":"04:36","startHours":27.185469154970576,"endHours":28.603454936079487,"quality":"inauspicious"},{"name":"Chala","start":"04:36","end":"06:01","startHours":28.603454936079487,"endHours":30.021440717188398,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.021440717188398,"endHours":7.021440717188398,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.021440717188398,"endHours":8.021440717188398,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.021440717188398,"endHours":9.021440717188398,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.021440717188398,"endHours":10.021440717188398,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.021440717188398,"endHours":11.021440717188398,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.021440717188398,"endHours":12.021440717188398,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.021440717188398,"endHours":13.021440717188398,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.021440717188398,"endHours":14.021440717188398,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.021440717188398,"endHours":15.021440717188398,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.021440717188398,"endHours":16.021440717188398,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.021440717188398,"endHours":17.021440717188398,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.021440717188398,"endHours":18.021440717188398,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.021440717188398,"endHours":19.021440717188398,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.021440717188398,"endHours":20.021440717188398,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.021440717188398,"endHours":21.021440717188398,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.021440717188398,"endHours":22.021440717188398,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.021440717188398,"endHours":23.021440717188398,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.021440717188398,"endHours":24.021440717188398,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.021440717188398,"endHours":25.021440717188398,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.021440717188398,"endHours":26.021440717188398,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.021440717188398,"endHours":27.021440717188398,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.021440717188398,"endHours":28.021440717188398,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.021440717188398,"endHours":29.021440717188398,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.021440717188398,"endHours":30.021440717188398,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":7.555271891758515,"eotMinutes":-1.6070555651651,"ayanamsa":21.2725}},"calendars":{"vikram_samvat":1872,"vikram_samvatsara":"Sarvadhāri","saka_samvat":1737,"saka_samvatsara":"Yuva","bengali_samvat":1222,"malayalam_era":991,"nanakshahi_year":346,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Pratipada · Vikram 1872 Sarvadhāri · Śaka 1737 Yuva"},"festivals":[{"id":"chaitra-navratri-start","name":"Caitra Navrātri Start (Gudhi Padwā)","name_sanskrit":"चैत्र नवरात्रि आरम्भ","tradition":"Shakta","associated_deity":"Devī Durgā (9 forms over 9 nights)","significance":"Spring Navrātri begins; Vasanta-pakṣa Devī worship. Maharashtra: Gudhi Padwā. South: Ugadi. Sindhi: Cheti Chand.","vrata":true,"detection":{"tithi_number":1,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":1}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","relevance":0.5}]},"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 10, 1815 CE · Vṛndāvana · Vidhyamitra","description":"April 10, 1815 CE for Vṛndāvana: Śukla Pratipada, sūryodaya 06:01, sūryāsta 18:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1815-04-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1815-04-10","sa":"https://sa.vidhyamitra.com/city/vrindavan/1815-04-10","hi":"https://hi.vidhyamitra.com/city/vrindavan/1815-04-10","x-default":"https://vidhyamitra.com/city/vrindavan/1815-04-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-05T14:48:20.602Z","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":"2026-06-05T14:48:20.602Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-05T14:48:20.602Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}