{"id":"vidhyamitra:city-day:rishikesh:1961-10-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1961-10-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1961-10-17","date_display":"October 17, 1961 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":1961,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2437589.770833,"kali_year":5063,"ahargana":1849124.2708,"sun":{"sidereal_longitude":179.476,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":269.6752,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":90.1993,"elapsed_within_tithi_degrees":6.1993},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1,"moon_longitude":269.6752,"elapsed_within_degrees":3.0086},"yoga":{"number":7,"name":"Sukarma","sum_longitude":89.1512},"karana":{"half_tithi_index":15,"name":"Bava"},"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":1961,"month":10,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2437589.770833,"ahargana":1849124.2708,"kali_year":5063,"ayanamsa_lahiri":23.3193,"grahas":{"sun":{"sidereal_longitude":180.11390299999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":268.223303,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false,"latitude":2.5679},"mars":{"sidereal_longitude":197.62120299999992,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":193.029403,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":true},"jupiter":{"sidereal_longitude":275.5886029999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":155.922503,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":270.857803,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":124.4975,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":304.4975,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1961,"month":10,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2437589.770833,"kali_year":5063,"ahargana":1849124.2708,"sun":{"sidereal_longitude":179.476,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":269.6752,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":90.1993,"elapsed_within_tithi_degrees":6.1993},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1,"moon_longitude":269.6752,"elapsed_within_degrees":3.0086},"yoga":{"number":7,"name":"Sukarma","sum_longitude":89.1512},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.568,"elongation":90.199},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.568,"opposition_distance":89.801}},"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":"06:19","sunsetLocal":"17:44","solarNoonLocal":"12:02","dayLengthHours":11.420436647832855,"dayLengthDisplay":"11 Hours 25 Mins 14 Secs","nightLengthDisplay":"12 Hours 34 Mins 46 Secs","moonriseLocal":"12:45","moonsetLocal":"23:04","rahuKala":{"name":"Rāhu Kāla","start":"14:53","end":"16:19","startHours":14.883478835924414,"endHours":16.31103341690352,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:10","end":"10:36","startHours":9.173260512007987,"endHours":10.600815092987094,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:02","end":"13:27","startHours":12.0283696739662,"endHours":13.455924254945309,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:59","end":"09:22","startHours":8.982919901210773,"endHours":9.363601122805202,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:48","end":"07:06","startHours":6.794002877042809,"endHours":7.098547854318352,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:25","startHours":11.647688452371773,"endHours":12.40905089556063,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:48","end":"05:33","startHours":4.79542646367206,"endHours":5.556788906860916,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:22","end":"06:19","startHours":5.3664482960637025,"endHours":6.3181513500497735,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:42","startHours":13.931775781938342,"endHours":14.693138225127198,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:32","end":"17:56","startHours":17.53858799788263,"endHours":17.938587997882628,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:44","end":"18:13","startHours":17.73858799788263,"endHours":18.214439524875665,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:29","end":"19:14","startHours":17.48858799788263,"endHours":19.23858799788263,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:25","startHours":23.647688452371774,"endHours":24.409050895560632,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:19","end":"07:45","startHours":6.3181513500497735,"endHours":7.74570593102888,"quality":"inauspicious"},{"name":"Udveg","start":"07:45","end":"09:10","startHours":7.74570593102888,"endHours":9.173260512007987,"quality":"inauspicious"},{"name":"Chala","start":"09:10","end":"10:36","startHours":9.173260512007987,"endHours":10.600815092987094,"quality":"neutral"},{"name":"Labha","start":"10:36","end":"12:02","startHours":10.600815092987094,"endHours":12.0283696739662,"quality":"auspicious"},{"name":"Amṛta","start":"12:02","end":"13:27","startHours":12.0283696739662,"endHours":13.455924254945309,"quality":"auspicious"},{"name":"Kāla","start":"13:27","end":"14:53","startHours":13.455924254945309,"endHours":14.883478835924414,"quality":"inauspicious"},{"name":"Śubha","start":"14:53","end":"16:19","startHours":14.883478835924414,"endHours":16.31103341690352,"quality":"auspicious"},{"name":"Roga","start":"16:19","end":"17:44","startHours":16.31103341690352,"endHours":17.73858799788263,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:44","end":"19:19","startHours":17.73858799788263,"endHours":19.311033416903523,"quality":"inauspicious"},{"name":"Śubha","start":"19:19","end":"20:53","startHours":19.311033416903523,"endHours":20.883478835924414,"quality":"auspicious"},{"name":"Roga","start":"20:53","end":"22:27","startHours":20.883478835924414,"endHours":22.45592425494531,"quality":"inauspicious"},{"name":"Udveg","start":"22:27","end":"00:02","startHours":22.45592425494531,"endHours":24.028369673966203,"quality":"inauspicious"},{"name":"Chala","start":"00:02","end":"01:36","startHours":24.028369673966203,"endHours":25.600815092987094,"quality":"neutral"},{"name":"Labha","start":"01:36","end":"03:10","startHours":25.600815092987094,"endHours":27.17326051200799,"quality":"auspicious"},{"name":"Amṛta","start":"03:10","end":"04:45","startHours":27.17326051200799,"endHours":28.74570593102888,"quality":"auspicious"},{"name":"Kāla","start":"04:45","end":"06:19","startHours":28.74570593102888,"endHours":30.318151350049774,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:19","end":"07:19","startHours":6.3181513500497735,"endHours":7.3181513500497735,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:19","end":"08:19","startHours":7.3181513500497735,"endHours":8.318151350049774,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:19","end":"09:19","startHours":8.318151350049774,"endHours":9.318151350049774,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:19","end":"10:19","startHours":9.318151350049774,"endHours":10.318151350049774,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:19","end":"11:19","startHours":10.318151350049774,"endHours":11.318151350049774,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:19","end":"12:19","startHours":11.318151350049774,"endHours":12.318151350049774,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:19","end":"13:19","startHours":12.318151350049774,"endHours":13.318151350049774,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:19","end":"14:19","startHours":13.318151350049774,"endHours":14.318151350049774,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:19","end":"15:19","startHours":14.318151350049774,"endHours":15.318151350049774,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:19","end":"16:19","startHours":15.318151350049774,"endHours":16.318151350049774,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:19","end":"17:19","startHours":16.318151350049774,"endHours":17.318151350049774,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:19","end":"18:19","startHours":17.318151350049774,"endHours":18.318151350049774,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:19","end":"19:19","startHours":18.318151350049774,"endHours":19.318151350049774,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:19","end":"20:19","startHours":19.318151350049774,"endHours":20.318151350049774,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:19","end":"21:19","startHours":20.318151350049774,"endHours":21.318151350049774,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:19","end":"22:19","startHours":21.318151350049774,"endHours":22.318151350049774,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:19","end":"23:19","startHours":22.318151350049774,"endHours":23.318151350049774,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:19","end":"00:19","startHours":23.318151350049774,"endHours":24.318151350049774,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:19","end":"01:19","startHours":24.318151350049774,"endHours":25.318151350049774,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:19","end":"02:19","startHours":25.318151350049774,"endHours":26.318151350049774,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:19","end":"03:19","startHours":26.318151350049774,"endHours":27.318151350049774,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:19","end":"04:19","startHours":27.318151350049774,"endHours":28.318151350049774,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:19","end":"05:19","startHours":28.318151350049774,"endHours":29.318151350049774,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:19","end":"06:19","startHours":29.318151350049774,"endHours":30.318151350049774,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.100698888426711,"eotMinutes":15.227419562027912,"ayanamsa":23.3193}},"calendars":{"vikram_samvat":2018,"vikram_samvatsara":"Ānanda","saka_samvat":1883,"saka_samvatsara":"Plava","bengali_samvat":1368,"malayalam_era":1137,"nanakshahi_year":492,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Aṣṭamī · Vikram 2018 Ānanda · Śaka 1883 Plava"},"festivals":[{"id":"durga-ashtami","name":"Mahā-Aṣṭamī (Durgā-Aṣṭamī)","name_sanskrit":"महाष्टमी","tradition":"Shakta","associated_deity":"Devī Durgā","significance":"8th day of Śāradīya Navrātri; Mahiṣāsura-mardinī kṣaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":1},{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi_ingress":"Tulā"},"precedence":5}],"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":"-3137-12-25","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 October 17, 1961 CE · Ṛṣikeśa · Vidhyamitra","description":"October 17, 1961 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 06:19, sūryāsta 17:44.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1961-10-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1961-10-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/1961-10-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/1961-10-17","x-default":"https://vidhyamitra.com/city/rishikesh/1961-10-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T01:35:06.452Z","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":"2026-06-01T01:35:06.452Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T01:35:06.452Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}