{"id":"vidhyamitra:city-day:rishikesh:2081-02-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2081-02-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2081-02-17","date_display":"February 17, 2081 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":2081,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2481177.770833,"kali_year":5182,"ahargana":1892712.2708,"sun":{"sidereal_longitude":303.971,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":39.2614,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":95.2904,"elapsed_within_tithi_degrees":11.2904},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":39.2614,"elapsed_within_degrees":12.5948},"yoga":{"number":26,"name":"Indra","sum_longitude":343.2324},"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":2081,"month":2,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2481177.770833,"ahargana":1892712.2708,"kali_year":5182,"ayanamsa_lahiri":24.9863,"grahas":{"sun":{"sidereal_longitude":304.0533210000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":35.49962099999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false,"latitude":4.0529},"mars":{"sidereal_longitude":356.624121,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":276.647821,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":307.39622099999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":328.142421,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":293.78312100000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":334.9955,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":154.9955,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","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":2081,"month":2,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2481177.770833,"kali_year":5182,"ahargana":1892712.2708,"sun":{"sidereal_longitude":303.971,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":39.2614,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":95.2904,"elapsed_within_tithi_degrees":11.2904},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4,"moon_longitude":39.2614,"elapsed_within_degrees":12.5948},"yoga":{"number":26,"name":"Indra","sum_longitude":343.2324},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.053,"elongation":95.29},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.053,"opposition_distance":84.71}},"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":"06:55","sunsetLocal":"18:08","solarNoonLocal":"12:31","dayLengthHours":11.204489949035903,"dayLengthDisplay":"11 Hours 12 Mins 16 Secs","nightLengthDisplay":"12 Hours 47 Mins 44 Secs","moonriseLocal":"11:45","moonsetLocal":"01:30","rahuKala":{"name":"Rāhu Kāla","start":"08:19","end":"09:43","startHours":8.322019074967141,"endHours":9.722580318596627,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:07","end":"12:31","startHours":11.123141562226117,"endHours":12.523702805855603,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:55","end":"15:19","startHours":13.924264049485092,"endHours":15.324825293114579,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:32","end":"09:55","startHours":9.53583881944603,"endHours":9.909321817747227,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:23","end":"07:41","startHours":7.3883115792141485,"endHours":7.687097977855106,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.150219807554405,"endHours":12.8971858041568,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:26","end":"06:10","startHours":5.4275258381328655,"endHours":6.174491834735258,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:59","end":"06:55","startHours":5.987750335584661,"endHours":6.921457831337652,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:08","startHours":14.391117797361588,"endHours":15.13808379396398,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:56","end":"18:20","startHours":17.925947780373555,"endHours":18.325947780373554,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:08","end":"18:36","startHours":18.125947780373554,"endHours":18.59280152825005,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:53","end":"19:38","startHours":17.875947780373554,"endHours":19.625947780373554,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.150219807554407,"endHours":24.8971858041568,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:55","end":"08:19","startHours":6.921457831337652,"endHours":8.322019074967141,"quality":"auspicious"},{"name":"Kāla","start":"08:19","end":"09:43","startHours":8.322019074967141,"endHours":9.722580318596627,"quality":"inauspicious"},{"name":"Śubha","start":"09:43","end":"11:07","startHours":9.722580318596627,"endHours":11.123141562226117,"quality":"auspicious"},{"name":"Roga","start":"11:07","end":"12:31","startHours":11.123141562226117,"endHours":12.523702805855603,"quality":"inauspicious"},{"name":"Udveg","start":"12:31","end":"13:55","startHours":12.523702805855603,"endHours":13.924264049485092,"quality":"inauspicious"},{"name":"Chala","start":"13:55","end":"15:19","startHours":13.924264049485092,"endHours":15.324825293114579,"quality":"neutral"},{"name":"Labha","start":"15:19","end":"16:44","startHours":15.324825293114579,"endHours":16.725386536744068,"quality":"auspicious"},{"name":"Amṛta","start":"16:44","end":"18:08","startHours":16.725386536744068,"endHours":18.125947780373554,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:08","end":"19:44","startHours":18.125947780373554,"endHours":19.725386536744068,"quality":"neutral"},{"name":"Labha","start":"19:44","end":"21:19","startHours":19.725386536744068,"endHours":21.32482529311458,"quality":"auspicious"},{"name":"Amṛta","start":"21:19","end":"22:55","startHours":21.32482529311458,"endHours":22.92426404948509,"quality":"auspicious"},{"name":"Kāla","start":"22:55","end":"00:31","startHours":22.92426404948509,"endHours":24.523702805855603,"quality":"inauspicious"},{"name":"Śubha","start":"00:31","end":"02:07","startHours":24.523702805855603,"endHours":26.123141562226117,"quality":"auspicious"},{"name":"Roga","start":"02:07","end":"03:43","startHours":26.123141562226117,"endHours":27.722580318596627,"quality":"inauspicious"},{"name":"Udveg","start":"03:43","end":"05:19","startHours":27.722580318596627,"endHours":29.322019074967137,"quality":"inauspicious"},{"name":"Chala","start":"05:19","end":"06:55","startHours":29.322019074967137,"endHours":30.92145783133765,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:55","end":"07:55","startHours":6.921457831337652,"endHours":7.921457831337652,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:55","end":"08:55","startHours":7.921457831337652,"endHours":8.921457831337651,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:55","end":"09:55","startHours":8.921457831337651,"endHours":9.921457831337651,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:55","end":"10:55","startHours":9.921457831337651,"endHours":10.921457831337651,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:55","end":"11:55","startHours":10.921457831337651,"endHours":11.921457831337651,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:55","end":"12:55","startHours":11.921457831337651,"endHours":12.921457831337651,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:55","end":"13:55","startHours":12.921457831337651,"endHours":13.921457831337651,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:55","end":"14:55","startHours":13.921457831337651,"endHours":14.921457831337651,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:55","end":"15:55","startHours":14.921457831337651,"endHours":15.921457831337651,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:55","end":"16:55","startHours":15.921457831337651,"endHours":16.92145783133765,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:55","end":"17:55","startHours":16.92145783133765,"endHours":17.92145783133765,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:55","end":"18:55","startHours":17.92145783133765,"endHours":18.92145783133765,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:55","end":"19:55","startHours":18.92145783133765,"endHours":19.92145783133765,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:55","end":"20:55","startHours":19.92145783133765,"endHours":20.92145783133765,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:55","end":"21:55","startHours":20.92145783133765,"endHours":21.92145783133765,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:55","end":"22:55","startHours":21.92145783133765,"endHours":22.92145783133765,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:55","end":"23:55","startHours":22.92145783133765,"endHours":23.92145783133765,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:55","end":"00:55","startHours":23.92145783133765,"endHours":24.92145783133765,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:55","end":"01:55","startHours":24.92145783133765,"endHours":25.92145783133765,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:55","end":"02:55","startHours":25.92145783133765,"endHours":26.92145783133765,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:55","end":"03:55","startHours":26.92145783133765,"endHours":27.92145783133765,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:55","end":"04:55","startHours":27.92145783133765,"endHours":28.92145783133765,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:55","end":"05:55","startHours":28.92145783133765,"endHours":29.92145783133765,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:55","end":"06:55","startHours":29.92145783133765,"endHours":30.92145783133765,"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":-11.806760972342575,"eotMinutes":-14.492568351336082,"ayanamsa":24.9863}},"calendars":{"vikram_samvat":2138,"vikram_samvatsara":"Ānanda","saka_samvat":2003,"saka_samvatsara":"Plava","bengali_samvat":1488,"malayalam_era":1257,"nanakshahi_year":612,"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 2138 Ānanda · Śaka 2003 Plava"},"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, 2081 CE · Ṛṣikeśa · Vidhyamitra","description":"February 17, 2081 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 06:55, sūryāsta 18:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2081-02-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2081-02-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/2081-02-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/2081-02-17","x-default":"https://vidhyamitra.com/city/rishikesh/2081-02-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T05:13:51.644Z","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":"2026-06-02T05:13:51.644Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T05:13:51.644Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}