{"id":"vidhyamitra:city-day:rishikesh:1957-04-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1957-04-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1957-04-30","date_display":"April 30, 1957 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":1957,"month":4,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435958.770833,"kali_year":5059,"ahargana":1847493.2708,"sun":{"sidereal_longitude":16.3381,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":16.3263,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":359.9882,"elapsed_within_tithi_degrees":11.9882},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":16.3263,"elapsed_within_degrees":2.993},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":32.6644},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":1957,"month":4,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2435958.770833,"ahargana":1847493.2708,"kali_year":5059,"ayanamsa_lahiri":23.2569,"grahas":{"sun":{"sidereal_longitude":16.174718999999982,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":16.71241900000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":1.1324},"mars":{"sidereal_longitude":64.45011899999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":26.00091900000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":149.188419,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":20.814319000000012,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":230.42841899999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":210.9158,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":30.9158,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"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":1957,"month":4,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435958.770833,"kali_year":5059,"ahargana":1847493.2708,"sun":{"sidereal_longitude":16.3381,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":16.3263,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":359.9882,"elapsed_within_tithi_degrees":11.9882},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":16.3263,"elapsed_within_degrees":2.993},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":32.6644},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":true,"moon_latitude":1.132,"elongation":0.012},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.132,"opposition_distance":179.988}},"eclipse_window_40days":[{"offset_days":0,"type":"solar","occurs":true,"moon_latitude":1.132,"elongation":0.012}]},"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"rishikesh","name":"Ṛṣikeśa","lat":30.0869,"lon":78.2676,"tz_offset_hours":5.5,"state":"Uttarakhand","country":"IN","tier":"tirtha"},"sunriseLocal":"05:35","sunsetLocal":"18:53","solarNoonLocal":"12:14","dayLengthHours":13.294458209001741,"dayLengthDisplay":"13 Hours 17 Mins 40 Secs","nightLengthDisplay":"10 Hours 42 Mins 20 Secs","moonriseLocal":"05:38","moonsetLocal":"18:54","rahuKala":{"name":"Rāhu Kāla","start":"15:34","end":"17:13","startHours":15.559350199097066,"endHours":17.221157475222284,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:55","end":"10:34","startHours":8.912121094596195,"endHours":10.573928370721413,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:14","end":"13:54","startHours":12.235735646846631,"endHours":13.897542922971848,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:41","end":"09:08","startHours":8.690546791112833,"endHours":9.133695398079558,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:09","end":"06:30","startHours":6.1424423010541656,"endHours":6.496961186627545,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:41","startHours":11.792587039879907,"endHours":12.678884253813356,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:49","end":"04:42","startHours":3.815912114478861,"endHours":4.7022093284123105,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:29","end":"05:35","startHours":4.480635024928948,"endHours":5.58850654234576,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:20","startHours":14.451478681680253,"endHours":15.337775895613703,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:41","end":"19:05","startHours":18.6829647513475,"endHours":19.0829647513475,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:53","end":"19:26","startHours":18.8829647513475,"endHours":19.436900510055906,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:38","end":"20:23","startHours":18.6329647513475,"endHours":20.3829647513475,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:41","startHours":23.79258703987991,"endHours":24.678884253813354,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:35","end":"07:15","startHours":5.58850654234576,"endHours":7.2503138184709774,"quality":"inauspicious"},{"name":"Udveg","start":"07:15","end":"08:55","startHours":7.2503138184709774,"endHours":8.912121094596195,"quality":"inauspicious"},{"name":"Chala","start":"08:55","end":"10:34","startHours":8.912121094596195,"endHours":10.573928370721413,"quality":"neutral"},{"name":"Labha","start":"10:34","end":"12:14","startHours":10.573928370721413,"endHours":12.235735646846631,"quality":"auspicious"},{"name":"Amṛta","start":"12:14","end":"13:54","startHours":12.235735646846631,"endHours":13.897542922971848,"quality":"auspicious"},{"name":"Kāla","start":"13:54","end":"15:34","startHours":13.897542922971848,"endHours":15.559350199097066,"quality":"inauspicious"},{"name":"Śubha","start":"15:34","end":"17:13","startHours":15.559350199097066,"endHours":17.221157475222284,"quality":"auspicious"},{"name":"Roga","start":"17:13","end":"18:53","startHours":17.221157475222284,"endHours":18.8829647513475,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:53","end":"20:13","startHours":18.8829647513475,"endHours":20.221157475222284,"quality":"inauspicious"},{"name":"Śubha","start":"20:13","end":"21:34","startHours":20.221157475222284,"endHours":21.559350199097064,"quality":"auspicious"},{"name":"Roga","start":"21:34","end":"22:54","startHours":21.559350199097064,"endHours":22.897542922971848,"quality":"inauspicious"},{"name":"Udveg","start":"22:54","end":"00:14","startHours":22.897542922971848,"endHours":24.23573564684663,"quality":"inauspicious"},{"name":"Chala","start":"00:14","end":"01:34","startHours":24.23573564684663,"endHours":25.57392837072141,"quality":"neutral"},{"name":"Labha","start":"01:34","end":"02:55","startHours":25.57392837072141,"endHours":26.912121094596195,"quality":"auspicious"},{"name":"Amṛta","start":"02:55","end":"04:15","startHours":26.912121094596195,"endHours":28.25031381847098,"quality":"auspicious"},{"name":"Kāla","start":"04:15","end":"05:35","startHours":28.25031381847098,"endHours":29.588506542345762,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:35","end":"06:35","startHours":5.58850654234576,"endHours":6.58850654234576,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:35","end":"07:35","startHours":6.58850654234576,"endHours":7.58850654234576,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:35","end":"08:35","startHours":7.58850654234576,"endHours":8.58850654234576,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:35","end":"09:35","startHours":8.58850654234576,"endHours":9.58850654234576,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:35","end":"10:35","startHours":9.58850654234576,"endHours":10.58850654234576,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:35","end":"11:35","startHours":10.58850654234576,"endHours":11.58850654234576,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:35","end":"12:35","startHours":11.58850654234576,"endHours":12.58850654234576,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:35","end":"13:35","startHours":12.58850654234576,"endHours":13.58850654234576,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:35","end":"14:35","startHours":13.58850654234576,"endHours":14.58850654234576,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:35","end":"15:35","startHours":14.58850654234576,"endHours":15.58850654234576,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:35","end":"16:35","startHours":15.58850654234576,"endHours":16.588506542345762,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:35","end":"17:35","startHours":16.588506542345762,"endHours":17.588506542345762,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:35","end":"18:35","startHours":17.588506542345762,"endHours":18.588506542345762,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:35","end":"19:35","startHours":18.588506542345762,"endHours":19.588506542345762,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:35","end":"20:35","startHours":19.588506542345762,"endHours":20.588506542345762,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:35","end":"21:35","startHours":20.588506542345762,"endHours":21.588506542345762,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:35","end":"22:35","startHours":21.588506542345762,"endHours":22.588506542345762,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:35","end":"23:35","startHours":22.588506542345762,"endHours":23.588506542345762,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:35","end":"00:35","startHours":23.588506542345762,"endHours":24.588506542345762,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:35","end":"01:35","startHours":24.588506542345762,"endHours":25.588506542345762,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:35","end":"02:35","startHours":25.588506542345762,"endHours":26.588506542345762,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:35","end":"03:35","startHours":26.588506542345762,"endHours":27.588506542345762,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:35","end":"04:35","startHours":27.588506542345762,"endHours":28.588506542345762,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:35","end":"05:35","startHours":28.588506542345762,"endHours":29.588506542345762,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":14.632752585377126,"eotMinutes":2.785461189202204,"ayanamsa":23.2569}},"calendars":{"vikram_samvat":2014,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1879,"saka_samvatsara":"Hemalambī","bengali_samvat":1364,"malayalam_era":1133,"nanakshahi_year":488,"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 Amāvasyā · Vikram 2014 Sādhāraṇa · Śaka 1879 Hemalambī"},"festivals":[],"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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 30, 1957 CE · Ṛṣikeśa · Vidhyamitra","description":"April 30, 1957 CE for Ṛṣikeśa: Kṛṣṇa Amāvasyā, sūryodaya 05:35, sūryāsta 18:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1957-04-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1957-04-30","sa":"https://sa.vidhyamitra.com/city/rishikesh/1957-04-30","hi":"https://hi.vidhyamitra.com/city/rishikesh/1957-04-30","x-default":"https://vidhyamitra.com/city/rishikesh/1957-04-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T00:35:47.043Z","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":"2026-06-01T00:35:47.043Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T00:35:47.043Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}