{"id":"vidhyamitra:city-day:rishikesh:1952-05-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1952-05-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1952-05-21","date_display":"May 21, 1952 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":1952,"month":5,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2434153.770833,"kali_year":5054,"ahargana":1845688.2708,"sun":{"sidereal_longitude":36.7893,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":3.9398,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":327.1505,"elapsed_within_tithi_degrees":3.1505},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":3.9398,"elapsed_within_degrees":3.9398},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":40.7292},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":1952,"month":5,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2434153.770833,"ahargana":1845688.2708,"kali_year":5054,"ayanamsa_lahiri":23.1879,"grahas":{"sun":{"sidereal_longitude":36.73548299999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":3.209783000000016,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":3.7893},"mars":{"sidereal_longitude":191.300883,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":17.363482999999974,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":12.586482999999987,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":27.975982999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.68918299999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":306.5533,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":126.5533,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","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":1952,"month":5,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2434153.770833,"kali_year":5054,"ahargana":1845688.2708,"sun":{"sidereal_longitude":36.7893,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":3.9398,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":327.1505,"elapsed_within_tithi_degrees":3.1505},"nakshatra":{"number":1,"name":"Aśvinī","pada":2,"moon_longitude":3.9398,"elapsed_within_degrees":3.9398},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":40.7292},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.789,"elongation":32.85},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.789,"opposition_distance":147.15}},"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":"05:20","sunsetLocal":"19:07","solarNoonLocal":"12:13","dayLengthHours":13.775143336691173,"dayLengthDisplay":"13 Hours 46 Mins 31 Secs","nightLengthDisplay":"10 Hours 13 Mins 29 Secs","moonriseLocal":"03:33","moonsetLocal":"16:26","rahuKala":{"name":"Rāhu Kāla","start":"12:13","end":"13:57","startHours":12.223169703625366,"endHours":13.945062620711763,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:03","end":"08:47","startHours":7.0574909523661775,"endHours":8.779383869452573,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:30","end":"12:13","startHours":10.50127678653897,"endHours":12.223169703625366,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"09:01","startHours":8.549798147174387,"endHours":9.00896959173076,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:55","end":"06:17","startHours":5.9095623409752465,"endHours":6.276899496620344,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:41","startHours":11.763998259068995,"endHours":12.682341148181738,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:30","end":"04:25","startHours":3.4989122570542914,"endHours":4.417255146167036,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:11","end":"05:20","startHours":4.18766942388885,"endHours":5.335598035279781,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:26","startHours":14.519026926407228,"endHours":15.437369815519974,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:55","end":"19:19","startHours":18.910741371970953,"endHours":19.310741371970952,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:07","end":"19:41","startHours":19.110741371970953,"endHours":19.684705677666418,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:52","end":"20:37","startHours":18.860741371970953,"endHours":20.610741371970953,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:41","startHours":23.763998259068995,"endHours":24.682341148181738,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:20","end":"07:03","startHours":5.335598035279781,"endHours":7.0574909523661775,"quality":"auspicious"},{"name":"Amṛta","start":"07:03","end":"08:47","startHours":7.0574909523661775,"endHours":8.779383869452573,"quality":"auspicious"},{"name":"Kāla","start":"08:47","end":"10:30","startHours":8.779383869452573,"endHours":10.50127678653897,"quality":"inauspicious"},{"name":"Śubha","start":"10:30","end":"12:13","startHours":10.50127678653897,"endHours":12.223169703625366,"quality":"auspicious"},{"name":"Roga","start":"12:13","end":"13:57","startHours":12.223169703625366,"endHours":13.945062620711763,"quality":"inauspicious"},{"name":"Udveg","start":"13:57","end":"15:40","startHours":13.945062620711763,"endHours":15.66695553779816,"quality":"inauspicious"},{"name":"Chala","start":"15:40","end":"17:23","startHours":15.66695553779816,"endHours":17.388848454884556,"quality":"neutral"},{"name":"Labha","start":"17:23","end":"19:07","startHours":17.388848454884556,"endHours":19.110741371970953,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"19:07","end":"20:23","startHours":19.110741371970953,"endHours":20.388848454884556,"quality":"inauspicious"},{"name":"Chala","start":"20:23","end":"21:40","startHours":20.388848454884556,"endHours":21.66695553779816,"quality":"neutral"},{"name":"Labha","start":"21:40","end":"22:57","startHours":21.66695553779816,"endHours":22.945062620711763,"quality":"auspicious"},{"name":"Amṛta","start":"22:57","end":"00:13","startHours":22.945062620711763,"endHours":24.223169703625366,"quality":"auspicious"},{"name":"Kāla","start":"00:13","end":"01:30","startHours":24.223169703625366,"endHours":25.50127678653897,"quality":"inauspicious"},{"name":"Śubha","start":"01:30","end":"02:47","startHours":25.50127678653897,"endHours":26.779383869452573,"quality":"auspicious"},{"name":"Roga","start":"02:47","end":"04:03","startHours":26.779383869452573,"endHours":28.057490952366177,"quality":"inauspicious"},{"name":"Udveg","start":"04:03","end":"05:20","startHours":28.057490952366177,"endHours":29.33559803527978,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:20","end":"06:20","startHours":5.335598035279781,"endHours":6.335598035279781,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:20","end":"07:20","startHours":6.335598035279781,"endHours":7.335598035279781,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:20","end":"08:20","startHours":7.335598035279781,"endHours":8.33559803527978,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:20","end":"09:20","startHours":8.33559803527978,"endHours":9.33559803527978,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:20","end":"10:20","startHours":9.33559803527978,"endHours":10.33559803527978,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:20","end":"11:20","startHours":10.33559803527978,"endHours":11.33559803527978,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:20","end":"12:20","startHours":11.33559803527978,"endHours":12.33559803527978,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:20","end":"13:20","startHours":12.33559803527978,"endHours":13.33559803527978,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:20","end":"14:20","startHours":13.33559803527978,"endHours":14.33559803527978,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:20","end":"15:20","startHours":14.33559803527978,"endHours":15.33559803527978,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:20","end":"16:20","startHours":15.33559803527978,"endHours":16.33559803527978,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:20","end":"17:20","startHours":16.33559803527978,"endHours":17.33559803527978,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:20","end":"18:20","startHours":17.33559803527978,"endHours":18.33559803527978,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:20","end":"19:20","startHours":18.33559803527978,"endHours":19.33559803527978,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:20","end":"20:20","startHours":19.33559803527978,"endHours":20.33559803527978,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:20","end":"21:20","startHours":20.33559803527978,"endHours":21.33559803527978,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:20","end":"22:20","startHours":21.33559803527978,"endHours":22.33559803527978,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:20","end":"23:20","startHours":22.33559803527978,"endHours":23.33559803527978,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:20","end":"00:20","startHours":23.33559803527978,"endHours":24.33559803527978,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:20","end":"01:20","startHours":24.33559803527978,"endHours":25.33559803527978,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:20","end":"02:20","startHours":25.33559803527978,"endHours":26.33559803527978,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:20","end":"03:20","startHours":26.33559803527978,"endHours":27.33559803527978,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:20","end":"04:20","startHours":27.33559803527978,"endHours":28.33559803527978,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:20","end":"05:20","startHours":28.33559803527978,"endHours":29.33559803527978,"planetary_lord":"Sun"}],"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":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","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":20.13175892880813,"eotMinutes":3.539417782478063,"ayanamsa":23.1879}},"calendars":{"vikram_samvat":2009,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1874,"saka_samvatsara":"Nandana","bengali_samvat":1359,"malayalam_era":1128,"nanakshahi_year":483,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Jyeṣṭha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Trayodaśī · Vikram 2009 Viśvāvasu · Śaka 1874 Nandana"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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":"rishikesh"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 21, 1952 CE · Ṛṣikeśa · Vidhyamitra","description":"May 21, 1952 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 05:20, sūryāsta 19:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1952-05-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1952-05-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/1952-05-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/1952-05-21","x-default":"https://vidhyamitra.com/city/rishikesh/1952-05-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T03:50:47.845Z","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":"2026-06-01T03:50:47.845Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T03:50:47.845Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}