{"id":"vidhyamitra:city-day:rishikesh:1971-02-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1971-02-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1971-02-09","date_display":"February 9, 1971 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":1971,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2440991.770833,"kali_year":5072,"ahargana":1852526.2708,"sun":{"sidereal_longitude":296.3117,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":102.5364,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":166.2247,"elapsed_within_tithi_degrees":10.2247},"nakshatra":{"number":8,"name":"Puṣya","pada":3,"moon_longitude":102.5364,"elapsed_within_degrees":9.2031},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":38.8482},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"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":1971,"month":2,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2440991.770833,"ahargana":1852526.2708,"kali_year":5072,"ayanamsa_lahiri":23.4494,"grahas":{"sun":{"sidereal_longitude":296.177821,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":102.04472099999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false,"latitude":1.6629},"mars":{"sidereal_longitude":227.573621,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":278.758921,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":221.10022100000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":250.66352099999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":23.132721000000004,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":304.2432,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":124.2432,"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":1971,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2440991.770833,"kali_year":5072,"ahargana":1852526.2708,"sun":{"sidereal_longitude":296.3117,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":102.5364,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":166.2247,"elapsed_within_tithi_degrees":10.2247},"nakshatra":{"number":8,"name":"Puṣya","pada":3,"moon_longitude":102.5364,"elapsed_within_degrees":9.2031},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":38.8482},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.663,"elongation":166.225},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.663,"opposition_distance":13.775}},"eclipse_window_40days":[{"offset_days":1,"type":"lunar","occurs":true,"moon_latitude":0.69,"opposition_distance":1.965}]},"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":"07:03","sunsetLocal":"18:00","solarNoonLocal":"12:31","dayLengthHours":10.949379505213187,"dayLengthDisplay":"10 Hours 56 Mins 58 Secs","nightLengthDisplay":"13 Hours 03 Mins 02 Secs","moonriseLocal":"16:46","moonsetLocal":"06:24","rahuKala":{"name":"Rāhu Kāla","start":"15:16","end":"16:38","startHours":15.261226705013161,"endHours":16.62989914316481,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:47","end":"11:09","startHours":9.786536952406568,"endHours":11.155209390558216,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:31","end":"13:54","startHours":12.523881828709865,"endHours":13.892554266861513,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:58","startHours":9.604047293986348,"endHours":9.969026610826788,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:30","end":"07:48","startHours":7.505416222153821,"endHours":7.797399675626172,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:53","startHours":12.158902511869425,"endHours":12.888861145550305,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:35","end":"06:19","startHours":5.589274808741513,"endHours":6.319233442422393,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:08","end":"07:03","startHours":6.136743784002173,"endHours":7.049192076103272,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:05","startHours":14.348778412912063,"endHours":15.078737046592941,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.79857158131646,"endHours":18.198571581316457,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:27","startHours":17.998571581316458,"endHours":18.454795727367006,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.748571581316458,"endHours":19.498571581316458,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:53","startHours":24.158902511869425,"endHours":24.888861145550305,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:03","end":"08:25","startHours":7.049192076103272,"endHours":8.41786451425492,"quality":"inauspicious"},{"name":"Udveg","start":"08:25","end":"09:47","startHours":8.41786451425492,"endHours":9.786536952406568,"quality":"inauspicious"},{"name":"Chala","start":"09:47","end":"11:09","startHours":9.786536952406568,"endHours":11.155209390558216,"quality":"neutral"},{"name":"Labha","start":"11:09","end":"12:31","startHours":11.155209390558216,"endHours":12.523881828709865,"quality":"auspicious"},{"name":"Amṛta","start":"12:31","end":"13:54","startHours":12.523881828709865,"endHours":13.892554266861513,"quality":"auspicious"},{"name":"Kāla","start":"13:54","end":"15:16","startHours":13.892554266861513,"endHours":15.261226705013161,"quality":"inauspicious"},{"name":"Śubha","start":"15:16","end":"16:38","startHours":15.261226705013161,"endHours":16.62989914316481,"quality":"auspicious"},{"name":"Roga","start":"16:38","end":"18:00","startHours":16.62989914316481,"endHours":17.998571581316458,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:00","end":"19:38","startHours":17.998571581316458,"endHours":19.62989914316481,"quality":"inauspicious"},{"name":"Śubha","start":"19:38","end":"21:16","startHours":19.62989914316481,"endHours":21.26122670501316,"quality":"auspicious"},{"name":"Roga","start":"21:16","end":"22:54","startHours":21.26122670501316,"endHours":22.892554266861513,"quality":"inauspicious"},{"name":"Udveg","start":"22:54","end":"00:31","startHours":22.892554266861513,"endHours":24.523881828709865,"quality":"inauspicious"},{"name":"Chala","start":"00:31","end":"02:09","startHours":24.523881828709865,"endHours":26.155209390558216,"quality":"neutral"},{"name":"Labha","start":"02:09","end":"03:47","startHours":26.155209390558216,"endHours":27.786536952406568,"quality":"auspicious"},{"name":"Amṛta","start":"03:47","end":"05:25","startHours":27.786536952406568,"endHours":29.41786451425492,"quality":"auspicious"},{"name":"Kāla","start":"05:25","end":"07:03","startHours":29.41786451425492,"endHours":31.04919207610327,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:03","end":"08:03","startHours":7.049192076103272,"endHours":8.049192076103271,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:03","end":"09:03","startHours":8.049192076103271,"endHours":9.049192076103271,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:03","end":"10:03","startHours":9.049192076103271,"endHours":10.049192076103271,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:03","end":"11:03","startHours":10.049192076103271,"endHours":11.049192076103271,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:03","end":"12:03","startHours":11.049192076103271,"endHours":12.049192076103271,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:03","end":"13:03","startHours":12.049192076103271,"endHours":13.049192076103271,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:03","end":"14:03","startHours":13.049192076103271,"endHours":14.049192076103271,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:03","end":"15:03","startHours":14.049192076103271,"endHours":15.049192076103271,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:03","end":"16:03","startHours":15.049192076103271,"endHours":16.04919207610327,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:03","end":"17:03","startHours":16.04919207610327,"endHours":17.04919207610327,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:03","end":"18:03","startHours":17.04919207610327,"endHours":18.04919207610327,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:03","end":"19:03","startHours":18.04919207610327,"endHours":19.04919207610327,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:03","end":"20:03","startHours":19.04919207610327,"endHours":20.04919207610327,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:03","end":"21:03","startHours":20.04919207610327,"endHours":21.04919207610327,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:03","end":"22:03","startHours":21.04919207610327,"endHours":22.04919207610327,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:03","end":"23:03","startHours":22.04919207610327,"endHours":23.04919207610327,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:03","end":"00:03","startHours":23.04919207610327,"endHours":24.04919207610327,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:03","end":"01:03","startHours":24.04919207610327,"endHours":25.04919207610327,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:03","end":"02:03","startHours":25.04919207610327,"endHours":26.04919207610327,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:03","end":"03:03","startHours":26.04919207610327,"endHours":27.04919207610327,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:03","end":"04:03","startHours":27.04919207610327,"endHours":28.04919207610327,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:03","end":"05:03","startHours":28.04919207610327,"endHours":29.04919207610327,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:03","end":"06:03","startHours":29.04919207610327,"endHours":30.04919207610327,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:03","end":"07:03","startHours":30.04919207610327,"endHours":31.04919207610327,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South-West","rahuVasa":"North","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-14.929741577553807,"eotMinutes":-14.503309722591807,"ayanamsa":23.4494}},"calendars":{"vikram_samvat":2028,"vikram_samvatsara":"Raktākṣī","saka_samvat":1893,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1378,"malayalam_era":1147,"nanakshahi_year":502,"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":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturdaśī · Vikram 2028 Raktākṣī · Śaka 1893 Virodhakṛt"},"festivals":[],"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":[]},"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 9, 1971 CE · Ṛṣikeśa · Vidhyamitra","description":"February 9, 1971 CE for Ṛṣikeśa: Śukla Caturdaśī, sūryodaya 07:03, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1971-02-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1971-02-09","sa":"https://sa.vidhyamitra.com/city/rishikesh/1971-02-09","hi":"https://hi.vidhyamitra.com/city/rishikesh/1971-02-09","x-default":"https://vidhyamitra.com/city/rishikesh/1971-02-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:33:11.793Z","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":"2026-06-01T08:33:11.793Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:33:11.793Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}