{"id":"vidhyamitra:city-day:vrindavan:2131-04-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/2131-04-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-04-20","date_display":"April 20, 2131 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":2131,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499500.770833,"kali_year":5233,"ahargana":1911035.2708,"sun":{"sidereal_longitude":3.7059,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":269.8877,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":266.1818,"elapsed_within_tithi_degrees":2.1818},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1,"moon_longitude":269.8877,"elapsed_within_degrees":3.2211},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.5936},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":2131,"month":4,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499500.770833,"ahargana":1911035.2708,"kali_year":5233,"ayanamsa_lahiri":25.6871,"grahas":{"sun":{"sidereal_longitude":3.8918469999999843,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":266.27334700000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false,"latitude":-0.4491},"mars":{"sidereal_longitude":291.98034699999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":336.618247,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":31.670247000000018,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":339.328847,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":196.46544700000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":84.1548,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":264.1548,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2131,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499500.770833,"kali_year":5233,"ahargana":1911035.2708,"sun":{"sidereal_longitude":3.7059,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":269.8877,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":266.1818,"elapsed_within_tithi_degrees":2.1818},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1,"moon_longitude":269.8877,"elapsed_within_degrees":3.2211},"yoga":{"number":21,"name":"Siddha","sum_longitude":273.5936},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.449,"elongation":93.818},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.449,"opposition_distance":86.182}},"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":"05:51","sunsetLocal":"18:46","solarNoonLocal":"12:18","dayLengthHours":12.92853066226386,"dayLengthDisplay":"12 Hours 55 Mins 43 Secs","nightLengthDisplay":"11 Hours 04 Mins 17 Secs","moonriseLocal":"00:33","moonsetLocal":"11:03","rahuKala":{"name":"Rāhu Kāla","start":"10:41","end":"12:18","startHours":10.690517609456336,"endHours":12.306583942239318,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:32","end":"17:09","startHours":15.538716607805283,"endHours":17.154782940588266,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:28","end":"09:04","startHours":7.45838494389037,"endHours":9.074451276673352,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:17","startHours":8.858975765635622,"endHours":9.289926787711083,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:23","end":"06:44","startHours":6.381007388701715,"endHours":6.725768206362084,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:44","startHours":11.875632920163856,"endHours":12.73753496431478,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:07","end":"04:59","startHours":4.1185145228055395,"endHours":4.980416566956464,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:46","end":"05:51","startHours":4.764941055918733,"endHours":5.8423186111073875,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:19","startHours":14.461339052616626,"endHours":15.32324109676755,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:34","end":"18:58","startHours":18.57084927337125,"endHours":18.970849273371247,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:46","end":"19:19","startHours":18.770849273371248,"endHours":19.309538050965575,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:31","end":"20:16","startHours":18.520849273371248,"endHours":20.270849273371248,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:44","startHours":23.875632920163856,"endHours":24.73753496431478,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:51","end":"07:28","startHours":5.8423186111073875,"endHours":7.45838494389037,"quality":"neutral"},{"name":"Labha","start":"07:28","end":"09:04","startHours":7.45838494389037,"endHours":9.074451276673352,"quality":"auspicious"},{"name":"Amṛta","start":"09:04","end":"10:41","startHours":9.074451276673352,"endHours":10.690517609456336,"quality":"auspicious"},{"name":"Kāla","start":"10:41","end":"12:18","startHours":10.690517609456336,"endHours":12.306583942239318,"quality":"inauspicious"},{"name":"Śubha","start":"12:18","end":"13:55","startHours":12.306583942239318,"endHours":13.9226502750223,"quality":"auspicious"},{"name":"Roga","start":"13:55","end":"15:32","startHours":13.9226502750223,"endHours":15.538716607805283,"quality":"inauspicious"},{"name":"Udveg","start":"15:32","end":"17:09","startHours":15.538716607805283,"endHours":17.154782940588266,"quality":"inauspicious"},{"name":"Chala","start":"17:09","end":"18:46","startHours":17.154782940588266,"endHours":18.770849273371248,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:46","end":"20:09","startHours":18.770849273371248,"endHours":20.154782940588266,"quality":"inauspicious"},{"name":"Udveg","start":"20:09","end":"21:32","startHours":20.154782940588266,"endHours":21.538716607805284,"quality":"inauspicious"},{"name":"Chala","start":"21:32","end":"22:55","startHours":21.538716607805284,"endHours":22.9226502750223,"quality":"neutral"},{"name":"Labha","start":"22:55","end":"00:18","startHours":22.9226502750223,"endHours":24.306583942239318,"quality":"auspicious"},{"name":"Amṛta","start":"00:18","end":"01:41","startHours":24.306583942239318,"endHours":25.690517609456336,"quality":"auspicious"},{"name":"Kāla","start":"01:41","end":"03:04","startHours":25.690517609456336,"endHours":27.07445127667335,"quality":"inauspicious"},{"name":"Śubha","start":"03:04","end":"04:28","startHours":27.07445127667335,"endHours":28.45838494389037,"quality":"auspicious"},{"name":"Roga","start":"04:28","end":"05:51","startHours":28.45838494389037,"endHours":29.842318611107387,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.8423186111073875,"endHours":6.8423186111073875,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.8423186111073875,"endHours":7.8423186111073875,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.8423186111073875,"endHours":8.842318611107387,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.842318611107387,"endHours":9.842318611107387,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.842318611107387,"endHours":10.842318611107387,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.842318611107387,"endHours":11.842318611107387,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.842318611107387,"endHours":12.842318611107387,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.842318611107387,"endHours":13.842318611107387,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.842318611107387,"endHours":14.842318611107387,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.842318611107387,"endHours":15.842318611107387,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.842318611107387,"endHours":16.842318611107387,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.842318611107387,"endHours":17.842318611107387,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.842318611107387,"endHours":18.842318611107387,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.842318611107387,"endHours":19.842318611107387,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.842318611107387,"endHours":20.842318611107387,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.842318611107387,"endHours":21.842318611107387,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.842318611107387,"endHours":22.842318611107387,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.842318611107387,"endHours":23.842318611107387,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.842318611107387,"endHours":24.842318611107387,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.842318611107387,"endHours":25.842318611107387,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.842318611107387,"endHours":26.842318611107387,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.842318611107387,"endHours":27.842318611107387,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.842318611107387,"endHours":28.842318611107387,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.842318611107387,"endHours":29.842318611107387,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":11.322407297901181,"eotMinutes":0.9677634656409275,"ayanamsa":25.6871}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"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 Aṣṭamī · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","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 20, 2131 CE · Vṛndāvana · Vidhyamitra","description":"April 20, 2131 CE for Vṛndāvana: Kṛṣṇa Aṣṭamī, sūryodaya 05:51, sūryāsta 18:46.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2131-04-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2131-04-20","sa":"https://sa.vidhyamitra.com/city/vrindavan/2131-04-20","hi":"https://hi.vidhyamitra.com/city/vrindavan/2131-04-20","x-default":"https://vidhyamitra.com/city/vrindavan/2131-04-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T00:22:27.819Z","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":"2026-06-02T00:22:27.819Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T00:22:27.819Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}