{"id":"vidhyamitra:city-day:rishikesh:1973-02-09:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1973-02-09","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-02-09","date_display":"February 9, 1973 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":1973,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441722.770833,"kali_year":5074,"ahargana":1853257.2708,"sun":{"sidereal_longitude":296.8029,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":7.4278,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":70.6249,"elapsed_within_tithi_degrees":10.6249},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":7.4278,"elapsed_within_degrees":7.4278},"yoga":{"number":23,"name":"Śubha","sum_longitude":304.2307},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1973,"month":2,"day":9,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441722.770833,"ahargana":1853257.2708,"kali_year":5074,"ayanamsa_lahiri":23.4773,"grahas":{"sun":{"sidereal_longitude":296.671292,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":6.54729199999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false,"latitude":4.4028},"mars":{"sidereal_longitude":244.654092,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":305.486992,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":273.889092,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":282.259992,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":50.45309200000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":265.5113,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":85.5113,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":1973,"month":2,"day":9,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441722.770833,"kali_year":5074,"ahargana":1853257.2708,"sun":{"sidereal_longitude":296.8029,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":7.4278,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":70.6249,"elapsed_within_tithi_degrees":10.6249},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":7.4278,"elapsed_within_degrees":7.4278},"yoga":{"number":23,"name":"Śubha","sum_longitude":304.2307},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.403,"elongation":70.625},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.403,"opposition_distance":109.375}},"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":"07:03","sunsetLocal":"18:00","solarNoonLocal":"12:31","dayLengthHours":10.962970382845796,"dayLengthDisplay":"10 Hours 57 Mins 47 Secs","nightLengthDisplay":"13 Hours 02 Mins 13 Secs","moonriseLocal":"10:41","moonsetLocal":"23:41","rahuKala":{"name":"Rāhu Kāla","start":"11:09","end":"12:31","startHours":11.153510530854142,"endHours":12.523881828709865,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:16","end":"16:38","startHours":15.264624424421314,"endHours":16.63499572227704,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:25","end":"09:47","startHours":8.412767935142693,"endHours":9.783139232998415,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:36","end":"09:58","startHours":9.600423059950987,"endHours":9.965855406045847,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:30","end":"07:47","startHours":7.499187069905542,"endHours":7.791532946781429,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:53","startHours":12.158449482615005,"endHours":12.889314174804724,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:35","end":"06:19","startHours":5.580667252907528,"endHours":6.311531945097247,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:08","end":"07:03","startHours":6.128815772049817,"endHours":7.042396637286967,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:21","end":"15:05","startHours":14.351043559184165,"endHours":15.081908251373884,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.805367020132763,"endHours":18.205367020132762,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:28","startHours":18.005367020132763,"endHours":18.462157452751338,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.755367020132763,"endHours":19.505367020132763,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:53","startHours":24.158449482615005,"endHours":24.889314174804724,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:03","end":"08:25","startHours":7.042396637286967,"endHours":8.412767935142693,"quality":"neutral"},{"name":"Labha","start":"08:25","end":"09:47","startHours":8.412767935142693,"endHours":9.783139232998415,"quality":"auspicious"},{"name":"Amṛta","start":"09:47","end":"11:09","startHours":9.783139232998415,"endHours":11.153510530854142,"quality":"auspicious"},{"name":"Kāla","start":"11:09","end":"12:31","startHours":11.153510530854142,"endHours":12.523881828709865,"quality":"inauspicious"},{"name":"Śubha","start":"12:31","end":"13:54","startHours":12.523881828709865,"endHours":13.89425312656559,"quality":"auspicious"},{"name":"Roga","start":"13:54","end":"15:16","startHours":13.89425312656559,"endHours":15.264624424421314,"quality":"inauspicious"},{"name":"Udveg","start":"15:16","end":"16:38","startHours":15.264624424421314,"endHours":16.63499572227704,"quality":"inauspicious"},{"name":"Chala","start":"16:38","end":"18:00","startHours":16.63499572227704,"endHours":18.005367020132763,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:00","end":"19:38","startHours":18.005367020132763,"endHours":19.63499572227704,"quality":"inauspicious"},{"name":"Udveg","start":"19:38","end":"21:16","startHours":19.63499572227704,"endHours":21.264624424421314,"quality":"inauspicious"},{"name":"Chala","start":"21:16","end":"22:54","startHours":21.264624424421314,"endHours":22.894253126565587,"quality":"neutral"},{"name":"Labha","start":"22:54","end":"00:31","startHours":22.894253126565587,"endHours":24.523881828709865,"quality":"auspicious"},{"name":"Amṛta","start":"00:31","end":"02:09","startHours":24.523881828709865,"endHours":26.153510530854142,"quality":"auspicious"},{"name":"Kāla","start":"02:09","end":"03:47","startHours":26.153510530854142,"endHours":27.783139232998415,"quality":"inauspicious"},{"name":"Śubha","start":"03:47","end":"05:25","startHours":27.783139232998415,"endHours":29.41276793514269,"quality":"auspicious"},{"name":"Roga","start":"05:25","end":"07:03","startHours":29.41276793514269,"endHours":31.042396637286966,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:03","end":"08:03","startHours":7.042396637286967,"endHours":8.042396637286966,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:03","end":"09:03","startHours":8.042396637286966,"endHours":9.042396637286966,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:03","end":"10:03","startHours":9.042396637286966,"endHours":10.042396637286966,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:03","end":"11:03","startHours":10.042396637286966,"endHours":11.042396637286966,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:03","end":"12:03","startHours":11.042396637286966,"endHours":12.042396637286966,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:03","end":"13:03","startHours":12.042396637286966,"endHours":13.042396637286966,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:03","end":"14:03","startHours":13.042396637286966,"endHours":14.042396637286966,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:03","end":"15:03","startHours":14.042396637286966,"endHours":15.042396637286966,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:03","end":"16:03","startHours":15.042396637286966,"endHours":16.042396637286966,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:03","end":"17:03","startHours":16.042396637286966,"endHours":17.042396637286966,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:03","end":"18:03","startHours":17.042396637286966,"endHours":18.042396637286966,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:03","end":"19:03","startHours":18.042396637286966,"endHours":19.042396637286966,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:03","end":"20:03","startHours":19.042396637286966,"endHours":20.042396637286966,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:03","end":"21:03","startHours":20.042396637286966,"endHours":21.042396637286966,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:03","end":"22:03","startHours":21.042396637286966,"endHours":22.042396637286966,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:03","end":"23:03","startHours":22.042396637286966,"endHours":23.042396637286966,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:03","end":"00:03","startHours":23.042396637286966,"endHours":24.042396637286966,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:03","end":"01:03","startHours":24.042396637286966,"endHours":25.042396637286966,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:03","end":"02:03","startHours":25.042396637286966,"endHours":26.042396637286966,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:03","end":"03:03","startHours":26.042396637286966,"endHours":27.042396637286966,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:03","end":"04:03","startHours":27.042396637286966,"endHours":28.042396637286966,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:03","end":"05:03","startHours":28.042396637286966,"endHours":29.042396637286966,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:03","end":"06:03","startHours":29.042396637286966,"endHours":30.042396637286966,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:03","end":"07:03","startHours":30.042396637286966,"endHours":31.042396637286966,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-14.76567326210349,"eotMinutes":-14.503309722591807,"ayanamsa":23.4773}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"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 Ṣaṣṭhī · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 9, 1973 CE · Ṛṣikeśa · Vidhyamitra","description":"February 9, 1973 CE for Ṛṣikeśa: Śukla Ṣaṣṭhī, sūryodaya 07:03, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1973-02-09","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1973-02-09","sa":"https://sa.vidhyamitra.com/city/rishikesh/1973-02-09","hi":"https://hi.vidhyamitra.com/city/rishikesh/1973-02-09","x-default":"https://vidhyamitra.com/city/rishikesh/1973-02-09"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T20:04:29.016Z","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":"2026-05-31T20:04:29.016Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T20:04:29.016Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}