{"id":"vidhyamitra:city-day:rishikesh:1986-02-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1986-02-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1986-02-17","date_display":"February 17, 1986 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":1986,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446478.770833,"kali_year":5087,"ahargana":1858013.2708,"sun":{"sidereal_longitude":304.561,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":37.2256,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.6646,"elapsed_within_tithi_degrees":8.6646},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":37.2256,"elapsed_within_degrees":10.559},"yoga":{"number":26,"name":"Indra","sum_longitude":341.7867},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1986,"month":2,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2446478.770833,"ahargana":1858013.2708,"kali_year":5087,"ayanamsa_lahiri":23.6592,"grahas":{"sun":{"sidereal_longitude":304.42017799999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":36.620878000000005,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false,"latitude":1.8079},"mars":{"sidereal_longitude":225.12217800000008,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":317.03977799999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":306.3084779999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":311.46197800000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":224.90247799999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":13.5155,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":193.5155,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"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":1986,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2446478.770833,"kali_year":5087,"ahargana":1858013.2708,"sun":{"sidereal_longitude":304.561,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":37.2256,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.6646,"elapsed_within_tithi_degrees":8.6646},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":37.2256,"elapsed_within_degrees":10.559},"yoga":{"number":26,"name":"Indra","sum_longitude":341.7867},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.808,"elongation":92.665},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.808,"opposition_distance":87.335}},"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":"06:56","sunsetLocal":"18:07","solarNoonLocal":"12:31","dayLengthHours":11.177612640576505,"dayLengthDisplay":"11 Hours 10 Mins 39 Secs","nightLengthDisplay":"12 Hours 49 Mins 21 Secs","moonriseLocal":"11:48","moonsetLocal":"01:32","rahuKala":{"name":"Rāhu Kāla","start":"08:20","end":"09:44","startHours":8.332098065639412,"endHours":9.729299645711475,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:08","end":"12:31","startHours":11.126501225783539,"endHours":12.523702805855603,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:55","end":"15:19","startHours":13.920904385927665,"endHours":15.318105965999727,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:33","end":"09:55","startHours":9.543006101701867,"endHours":9.915593189721084,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:24","end":"07:42","startHours":7.40063034559137,"endHours":7.698700016006744,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.151115717836387,"endHours":12.896289893874819,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:27","end":"06:11","startHours":5.444548133490482,"endHours":6.189722309528915,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:00","end":"06:56","startHours":6.003428765519307,"endHours":6.934896485567349,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:08","startHours":14.386638245951687,"endHours":15.131812421990121,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:55","end":"18:19","startHours":17.912509126143856,"endHours":18.312509126143855,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:07","end":"18:35","startHours":18.112509126143856,"endHours":18.578242986167876,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:52","end":"19:37","startHours":17.862509126143856,"endHours":19.612509126143856,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.151115717836387,"endHours":24.89628989387482,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:56","end":"08:20","startHours":6.934896485567349,"endHours":8.332098065639412,"quality":"auspicious"},{"name":"Kāla","start":"08:20","end":"09:44","startHours":8.332098065639412,"endHours":9.729299645711475,"quality":"inauspicious"},{"name":"Śubha","start":"09:44","end":"11:08","startHours":9.729299645711475,"endHours":11.126501225783539,"quality":"auspicious"},{"name":"Roga","start":"11:08","end":"12:31","startHours":11.126501225783539,"endHours":12.523702805855603,"quality":"inauspicious"},{"name":"Udveg","start":"12:31","end":"13:55","startHours":12.523702805855603,"endHours":13.920904385927665,"quality":"inauspicious"},{"name":"Chala","start":"13:55","end":"15:19","startHours":13.920904385927665,"endHours":15.318105965999727,"quality":"neutral"},{"name":"Labha","start":"15:19","end":"16:43","startHours":15.318105965999727,"endHours":16.71530754607179,"quality":"auspicious"},{"name":"Amṛta","start":"16:43","end":"18:07","startHours":16.71530754607179,"endHours":18.112509126143856,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:07","end":"19:43","startHours":18.112509126143856,"endHours":19.71530754607179,"quality":"neutral"},{"name":"Labha","start":"19:43","end":"21:19","startHours":19.71530754607179,"endHours":21.318105965999727,"quality":"auspicious"},{"name":"Amṛta","start":"21:19","end":"22:55","startHours":21.318105965999727,"endHours":22.920904385927667,"quality":"auspicious"},{"name":"Kāla","start":"22:55","end":"00:31","startHours":22.920904385927667,"endHours":24.523702805855603,"quality":"inauspicious"},{"name":"Śubha","start":"00:31","end":"02:08","startHours":24.523702805855603,"endHours":26.12650122578354,"quality":"auspicious"},{"name":"Roga","start":"02:08","end":"03:44","startHours":26.12650122578354,"endHours":27.729299645711478,"quality":"inauspicious"},{"name":"Udveg","start":"03:44","end":"05:20","startHours":27.729299645711478,"endHours":29.332098065639414,"quality":"inauspicious"},{"name":"Chala","start":"05:20","end":"06:56","startHours":29.332098065639414,"endHours":30.93489648556735,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:56","end":"07:56","startHours":6.934896485567349,"endHours":7.934896485567349,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:56","end":"08:56","startHours":7.934896485567349,"endHours":8.93489648556735,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:56","end":"09:56","startHours":8.93489648556735,"endHours":9.93489648556735,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:56","end":"10:56","startHours":9.93489648556735,"endHours":10.93489648556735,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:56","end":"11:56","startHours":10.93489648556735,"endHours":11.93489648556735,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:56","end":"12:56","startHours":11.93489648556735,"endHours":12.93489648556735,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:56","end":"13:56","startHours":12.93489648556735,"endHours":13.93489648556735,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:56","end":"14:56","startHours":13.93489648556735,"endHours":14.93489648556735,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:56","end":"15:56","startHours":14.93489648556735,"endHours":15.93489648556735,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:56","end":"16:56","startHours":15.93489648556735,"endHours":16.93489648556735,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:56","end":"17:56","startHours":16.93489648556735,"endHours":17.93489648556735,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:56","end":"18:56","startHours":17.93489648556735,"endHours":18.93489648556735,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:56","end":"19:56","startHours":18.93489648556735,"endHours":19.93489648556735,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:56","end":"20:56","startHours":19.93489648556735,"endHours":20.93489648556735,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:56","end":"21:56","startHours":20.93489648556735,"endHours":21.93489648556735,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:56","end":"22:56","startHours":21.93489648556735,"endHours":22.93489648556735,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:56","end":"23:56","startHours":22.93489648556735,"endHours":23.93489648556735,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:56","end":"00:56","startHours":23.93489648556735,"endHours":24.93489648556735,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:56","end":"01:56","startHours":24.93489648556735,"endHours":25.93489648556735,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:56","end":"02:56","startHours":25.93489648556735,"endHours":26.93489648556735,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:56","end":"03:56","startHours":26.93489648556735,"endHours":27.93489648556735,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:56","end":"04:56","startHours":27.93489648556735,"endHours":28.93489648556735,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:56","end":"05:56","startHours":28.93489648556735,"endHours":29.93489648556735,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:56","end":"06:56","startHours":29.93489648556735,"endHours":30.93489648556735,"planetary_lord":"Venus"}],"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","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.139851437335524,"eotMinutes":-14.492568351336082,"ayanamsa":23.6592}},"calendars":{"vikram_samvat":2043,"vikram_samvatsara":"Pramāthi","saka_samvat":1908,"saka_samvatsara":"Akṣaya","bengali_samvat":1393,"malayalam_era":1162,"nanakshahi_year":517,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Aṣṭamī · Vikram 2043 Pramāthi · Śaka 1908 Akṣaya"},"festivals":[{"id":"bhishma-ashtami","name":"Bhīṣmāṣṭamī","name_sanskrit":"भीष्माष्टमी","tradition":"Pan-Hindu","associated_deity":"Bhīṣma Pitāmaha","significance":"Bhīṣma's mahaprasthāna anniversary (Māgha Śukla 8); Bhīṣma-tarpaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Mahābhārata, Anuśāsana Parva"]}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī + Kṛttikā","url":"/day/-3137-12-25","relevance":1},{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","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 February 17, 1986 CE · Ṛṣikeśa · Vidhyamitra","description":"February 17, 1986 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 06:56, sūryāsta 18:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1986-02-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1986-02-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/1986-02-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/1986-02-17","x-default":"https://vidhyamitra.com/city/rishikesh/1986-02-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:32:25.469Z","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":"2026-05-30T23:32:25.469Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:32:25.469Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}