{"id":"vidhyamitra:city-day:rishikesh:1975-04-19:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1975-04-19","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1975-04-19","date_display":"April 19, 1975 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":1975,"month":4,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442521.770833,"kali_year":5077,"ahargana":1854056.2708,"sun":{"sidereal_longitude":5.0358,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":95.6415,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":90.6056,"elapsed_within_tithi_degrees":6.6056},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":95.6415,"elapsed_within_degrees":2.3081},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":100.6773},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1975,"month":4,"day":19,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2442521.770833,"ahargana":1854056.2708,"kali_year":5077,"ayanamsa_lahiri":23.5079,"grahas":{"sun":{"sidereal_longitude":4.862864000000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":92.87676399999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false,"latitude":-3.5671},"mars":{"sidereal_longitude":312.340464,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":5.25866400000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":344.098464,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":42.87276400000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":79.69186400000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":223.1764,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":43.1764,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"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":1975,"month":4,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442521.770833,"kali_year":5077,"ahargana":1854056.2708,"sun":{"sidereal_longitude":5.0358,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":95.6415,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":90.6056,"elapsed_within_tithi_degrees":6.6056},"nakshatra":{"number":8,"name":"Puṣya","pada":1,"moon_longitude":95.6415,"elapsed_within_degrees":2.3081},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":100.6773},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.567,"elongation":90.606},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.567,"opposition_distance":89.394}},"eclipse_window_40days":[]},"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":"05:47","sunsetLocal":"18:46","solarNoonLocal":"12:16","dayLengthHours":12.985292491968089,"dayLengthDisplay":"12 Hours 59 Mins 07 Secs","nightLengthDisplay":"11 Hours 00 Mins 53 Secs","moonriseLocal":"11:14","moonsetLocal":"01:02","rahuKala":{"name":"Rāhu Kāla","start":"09:01","end":"10:39","startHours":9.023494603764837,"endHours":10.646656165260847,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:54","end":"15:31","startHours":13.89297928825287,"endHours":15.516140849748881,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:47","end":"07:24","startHours":5.7771714807728145,"endHours":7.400333042268826,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:48","end":"09:14","startHours":8.807073062232035,"endHours":9.239916145297638,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:19","end":"06:40","startHours":6.3182253346048185,"endHours":6.664499801057301,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:42","startHours":11.836974643691256,"endHours":12.702660809822461,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:03","end":"04:55","startHours":4.045799148510403,"endHours":4.911485314641609,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:42","end":"05:47","startHours":4.6950637731088065,"endHours":5.7771714807728145,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:18","startHours":14.434033142084875,"endHours":15.299719308216082,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:34","end":"18:58","startHours":18.562463972740904,"endHours":18.962463972740903,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:46","end":"19:18","startHours":18.762463972740903,"endHours":19.303517826572907,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:31","end":"20:16","startHours":18.512463972740903,"endHours":20.262463972740903,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:42","startHours":23.836974643691256,"endHours":24.70266080982246,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:47","end":"07:24","startHours":5.7771714807728145,"endHours":7.400333042268826,"quality":"inauspicious"},{"name":"Śubha","start":"07:24","end":"09:01","startHours":7.400333042268826,"endHours":9.023494603764837,"quality":"auspicious"},{"name":"Roga","start":"09:01","end":"10:39","startHours":9.023494603764837,"endHours":10.646656165260847,"quality":"inauspicious"},{"name":"Udveg","start":"10:39","end":"12:16","startHours":10.646656165260847,"endHours":12.269817726756859,"quality":"inauspicious"},{"name":"Chala","start":"12:16","end":"13:54","startHours":12.269817726756859,"endHours":13.89297928825287,"quality":"neutral"},{"name":"Labha","start":"13:54","end":"15:31","startHours":13.89297928825287,"endHours":15.516140849748881,"quality":"auspicious"},{"name":"Amṛta","start":"15:31","end":"17:08","startHours":15.516140849748881,"endHours":17.13930241124489,"quality":"auspicious"},{"name":"Kāla","start":"17:08","end":"18:46","startHours":17.13930241124489,"endHours":18.762463972740903,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:46","end":"20:08","startHours":18.762463972740903,"endHours":20.13930241124489,"quality":"auspicious"},{"name":"Amṛta","start":"20:08","end":"21:31","startHours":20.13930241124489,"endHours":21.51614084974888,"quality":"auspicious"},{"name":"Kāla","start":"21:31","end":"22:54","startHours":21.51614084974888,"endHours":22.89297928825287,"quality":"inauspicious"},{"name":"Śubha","start":"22:54","end":"00:16","startHours":22.89297928825287,"endHours":24.26981772675686,"quality":"auspicious"},{"name":"Roga","start":"00:16","end":"01:39","startHours":24.26981772675686,"endHours":25.646656165260847,"quality":"inauspicious"},{"name":"Udveg","start":"01:39","end":"03:01","startHours":25.646656165260847,"endHours":27.02349460376484,"quality":"inauspicious"},{"name":"Chala","start":"03:01","end":"04:24","startHours":27.02349460376484,"endHours":28.400333042268826,"quality":"neutral"},{"name":"Labha","start":"04:24","end":"05:47","startHours":28.400333042268826,"endHours":29.777171480772815,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:47","end":"06:47","startHours":5.7771714807728145,"endHours":6.7771714807728145,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:47","end":"07:47","startHours":6.7771714807728145,"endHours":7.7771714807728145,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:47","end":"08:47","startHours":7.7771714807728145,"endHours":8.777171480772815,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:47","end":"09:47","startHours":8.777171480772815,"endHours":9.777171480772815,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:47","end":"10:47","startHours":9.777171480772815,"endHours":10.777171480772815,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:47","end":"11:47","startHours":10.777171480772815,"endHours":11.777171480772815,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:47","end":"12:47","startHours":11.777171480772815,"endHours":12.777171480772815,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:47","end":"13:47","startHours":12.777171480772815,"endHours":13.777171480772815,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:47","end":"14:47","startHours":13.777171480772815,"endHours":14.777171480772815,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:47","end":"15:47","startHours":14.777171480772815,"endHours":15.777171480772815,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:47","end":"16:47","startHours":15.777171480772815,"endHours":16.777171480772815,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:47","end":"17:47","startHours":16.777171480772815,"endHours":17.777171480772815,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:47","end":"18:47","startHours":17.777171480772815,"endHours":18.777171480772815,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:47","end":"19:47","startHours":18.777171480772815,"endHours":19.777171480772815,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:47","end":"20:47","startHours":19.777171480772815,"endHours":20.777171480772815,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:47","end":"21:47","startHours":20.777171480772815,"endHours":21.777171480772815,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:47","end":"22:47","startHours":21.777171480772815,"endHours":22.777171480772815,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:47","end":"23:47","startHours":22.777171480772815,"endHours":23.777171480772815,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:47","end":"00:47","startHours":23.777171480772815,"endHours":24.777171480772815,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:47","end":"01:47","startHours":24.777171480772815,"endHours":25.777171480772815,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:47","end":"02:47","startHours":25.777171480772815,"endHours":26.777171480772815,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:47","end":"03:47","startHours":26.777171480772815,"endHours":27.777171480772815,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:47","end":"04:47","startHours":27.777171480772815,"endHours":28.777171480772815,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:47","end":"05:47","startHours":28.777171480772815,"endHours":29.777171480772815,"planetary_lord":"Mercury"}],"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":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":10.894001610268964,"eotMinutes":0.740536394588492,"ayanamsa":23.5079}},"calendars":{"vikram_samvat":2032,"vikram_samvatsara":"Vibhava","saka_samvat":1897,"saka_samvatsara":"Rākṣasa","bengali_samvat":1382,"malayalam_era":1151,"nanakshahi_year":506,"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":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Aṣṭamī · Vikram 2032 Vibhava · Śaka 1897 Rākṣasa"},"festivals":[],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","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 19, 1975 CE · Ṛṣikeśa · Vidhyamitra","description":"April 19, 1975 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 05:47, sūryāsta 18:46.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1975-04-19","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1975-04-19","sa":"https://sa.vidhyamitra.com/city/rishikesh/1975-04-19","hi":"https://hi.vidhyamitra.com/city/rishikesh/1975-04-19","x-default":"https://vidhyamitra.com/city/rishikesh/1975-04-19"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T01:42:57.401Z","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":"2026-06-01T01:42:57.401Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T01:42:57.401Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}