{"id":"vidhyamitra:city-day:rishikesh:1975-08-16:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1975-08-16","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1975-08-16","date_display":"August 16, 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":8,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442640.770833,"kali_year":5077,"ahargana":1854175.2708,"sun":{"sidereal_longitude":118.4986,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":230.1394,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":111.6407,"elapsed_within_tithi_degrees":3.6407},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":230.1394,"elapsed_within_degrees":3.4727},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":348.638},"karana":{"half_tithi_index":18,"name":"Taitila"},"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":8,"day":16,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2442640.770833,"ahargana":1854175.2708,"kali_year":5077,"ayanamsa_lahiri":23.5124,"grahas":{"sun":{"sidereal_longitude":119.05661699999996,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":232.84161700000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":1.0318},"mars":{"sidereal_longitude":37.519217000000026,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":133.59821699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":1.201016999999979,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":136.61041699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"saturn":{"sidereal_longitude":93.050117,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":216.8712,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":36.8712,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":1975,"month":8,"day":16,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2442640.770833,"kali_year":5077,"ahargana":1854175.2708,"sun":{"sidereal_longitude":118.4986,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":230.1394,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":111.6407,"elapsed_within_tithi_degrees":3.6407},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":230.1394,"elapsed_within_degrees":3.4727},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":348.638},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.032,"elongation":111.641},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.032,"opposition_distance":68.359}},"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":"05:44","sunsetLocal":"18:58","solarNoonLocal":"12:21","dayLengthHours":13.24041010155655,"dayLengthDisplay":"13 Hours 14 Mins 25 Secs","nightLengthDisplay":"10 Hours 45 Mins 35 Secs","moonriseLocal":"14:49","moonsetLocal":"01:03","rahuKala":{"name":"Rāhu Kāla","start":"09:02","end":"10:42","startHours":9.038221734563068,"endHours":10.693272997257637,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:00","end":"15:40","startHours":14.003375522646776,"endHours":15.658426785341344,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:44","end":"07:23","startHours":5.728119209173931,"endHours":7.3831704718685,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:49","end":"09:16","startHours":8.81754823287046,"endHours":9.258895236255679,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:17","end":"06:38","startHours":6.279802963405454,"endHours":6.632880566113629,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:47","startHours":11.90697725656699,"endHours":12.789671263337425,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:58","end":"04:51","startHours":3.9627311956330575,"endHours":4.8454252024034945,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:37","end":"05:44","startHours":4.624751700710885,"endHours":5.728119209173931,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:26","startHours":14.555059276878298,"endHours":15.437753283648735,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:46","end":"19:10","startHours":18.768529310730482,"endHours":19.16852931073048,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:58","end":"19:31","startHours":18.96852931073048,"endHours":19.520213064962004,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:43","end":"20:28","startHours":18.71852931073048,"endHours":20.46852931073048,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:47","startHours":23.90697725656699,"endHours":24.789671263337425,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:44","end":"07:23","startHours":5.728119209173931,"endHours":7.3831704718685,"quality":"inauspicious"},{"name":"Śubha","start":"07:23","end":"09:02","startHours":7.3831704718685,"endHours":9.038221734563068,"quality":"auspicious"},{"name":"Roga","start":"09:02","end":"10:42","startHours":9.038221734563068,"endHours":10.693272997257637,"quality":"inauspicious"},{"name":"Udveg","start":"10:42","end":"12:21","startHours":10.693272997257637,"endHours":12.348324259952207,"quality":"inauspicious"},{"name":"Chala","start":"12:21","end":"14:00","startHours":12.348324259952207,"endHours":14.003375522646776,"quality":"neutral"},{"name":"Labha","start":"14:00","end":"15:40","startHours":14.003375522646776,"endHours":15.658426785341344,"quality":"auspicious"},{"name":"Amṛta","start":"15:40","end":"17:19","startHours":15.658426785341344,"endHours":17.31347804803591,"quality":"auspicious"},{"name":"Kāla","start":"17:19","end":"18:58","startHours":17.31347804803591,"endHours":18.96852931073048,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:58","end":"20:19","startHours":18.96852931073048,"endHours":20.31347804803591,"quality":"auspicious"},{"name":"Amṛta","start":"20:19","end":"21:40","startHours":20.31347804803591,"endHours":21.658426785341344,"quality":"auspicious"},{"name":"Kāla","start":"21:40","end":"23:00","startHours":21.658426785341344,"endHours":23.003375522646774,"quality":"inauspicious"},{"name":"Śubha","start":"23:00","end":"00:21","startHours":23.003375522646774,"endHours":24.348324259952207,"quality":"auspicious"},{"name":"Roga","start":"00:21","end":"01:42","startHours":24.348324259952207,"endHours":25.693272997257637,"quality":"inauspicious"},{"name":"Udveg","start":"01:42","end":"03:02","startHours":25.693272997257637,"endHours":27.038221734563066,"quality":"inauspicious"},{"name":"Chala","start":"03:02","end":"04:23","startHours":27.038221734563066,"endHours":28.3831704718685,"quality":"neutral"},{"name":"Labha","start":"04:23","end":"05:44","startHours":28.3831704718685,"endHours":29.728119209173933,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:44","end":"06:44","startHours":5.728119209173931,"endHours":6.728119209173931,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:44","end":"07:44","startHours":6.728119209173931,"endHours":7.728119209173931,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:44","end":"08:44","startHours":7.728119209173931,"endHours":8.728119209173931,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:44","end":"09:44","startHours":8.728119209173931,"endHours":9.728119209173931,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:44","end":"10:44","startHours":9.728119209173931,"endHours":10.728119209173931,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:44","end":"11:44","startHours":10.728119209173931,"endHours":11.728119209173931,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:44","end":"12:44","startHours":11.728119209173931,"endHours":12.728119209173931,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:44","end":"13:44","startHours":12.728119209173931,"endHours":13.728119209173931,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:44","end":"14:44","startHours":13.728119209173931,"endHours":14.728119209173931,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:44","end":"15:44","startHours":14.728119209173931,"endHours":15.728119209173931,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:44","end":"16:44","startHours":15.728119209173931,"endHours":16.728119209173933,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:44","end":"17:44","startHours":16.728119209173933,"endHours":17.728119209173933,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:44","end":"18:44","startHours":17.728119209173933,"endHours":18.728119209173933,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:44","end":"19:44","startHours":18.728119209173933,"endHours":19.728119209173933,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:44","end":"20:44","startHours":19.728119209173933,"endHours":20.728119209173933,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:44","end":"21:44","startHours":20.728119209173933,"endHours":21.728119209173933,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:44","end":"22:44","startHours":21.728119209173933,"endHours":22.728119209173933,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:44","end":"23:44","startHours":22.728119209173933,"endHours":23.728119209173933,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:44","end":"00:44","startHours":23.728119209173933,"endHours":24.728119209173933,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:44","end":"01:44","startHours":24.728119209173933,"endHours":25.728119209173933,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:44","end":"02:44","startHours":25.728119209173933,"endHours":26.728119209173933,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:44","end":"03:44","startHours":26.728119209173933,"endHours":27.728119209173933,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:44","end":"04:44","startHours":27.728119209173933,"endHours":28.728119209173933,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:44","end":"05:44","startHours":28.728119209173933,"endHours":29.728119209173933,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.98949032729597,"eotMinutes":-3.969855597132357,"ayanamsa":23.5124}},"calendars":{"vikram_samvat":2032,"vikram_samvatsara":"Vibhava","saka_samvat":1897,"saka_samvatsara":"Rākṣasa","bengali_samvat":1382,"malayalam_era":1151,"nanakshahi_year":506,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Daśamī · Vikram 2032 Vibhava · Śaka 1897 Rākṣasa"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"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":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","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 August 16, 1975 CE · Ṛṣikeśa · Vidhyamitra","description":"August 16, 1975 CE for Ṛṣikeśa: Śukla Daśamī, sūryodaya 05:44, sūryāsta 18:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1975-08-16","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1975-08-16","sa":"https://sa.vidhyamitra.com/city/rishikesh/1975-08-16","hi":"https://hi.vidhyamitra.com/city/rishikesh/1975-08-16","x-default":"https://vidhyamitra.com/city/rishikesh/1975-08-16"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-24T21:13:22.014Z","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":"2026-05-24T21:13:22.014Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-24T21:13:22.014Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}