{"id":"vidhyamitra:city-day:rishikesh:1973-09-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1973-09-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-09-21","date_display":"September 21, 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":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441946.770833,"kali_year":5075,"ahargana":1853481.2708,"sun":{"sidereal_longitude":153.7538,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":82.5322,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":288.7784,"elapsed_within_tithi_degrees":0.7784},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":82.5322,"elapsed_within_degrees":2.5322},"yoga":{"number":18,"name":"Varīyān","sum_longitude":236.286},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"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":9,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441946.770833,"ahargana":1853481.2708,"kali_year":5075,"ayanamsa_lahiri":23.4859,"grahas":{"sun":{"sidereal_longitude":154.42803300000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":82.39263299999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":-0.6947},"mars":{"sidereal_longitude":16.10133300000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":169.01773300000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":279.216133,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":195.859333,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":70.87293299999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":253.6427,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":73.6427,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":1973,"month":9,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441946.770833,"kali_year":5075,"ahargana":1853481.2708,"sun":{"sidereal_longitude":153.7538,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":82.5322,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":288.7784,"elapsed_within_tithi_degrees":0.7784},"nakshatra":{"number":7,"name":"Punarvasu","pada":1,"moon_longitude":82.5322,"elapsed_within_degrees":2.5322},"yoga":{"number":18,"name":"Varīyān","sum_longitude":236.286},"karana":{"half_tithi_index":48,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.695,"elongation":71.222},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.695,"opposition_distance":108.778}},"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":"06:03","sunsetLocal":"18:15","solarNoonLocal":"12:09","dayLengthHours":12.192477123173898,"dayLengthDisplay":"12 Hours 11 Mins 33 Secs","nightLengthDisplay":"11 Hours 48 Mins 27 Secs","moonriseLocal":"00:23","moonsetLocal":"14:20","rahuKala":{"name":"Rāhu Kāla","start":"10:38","end":"12:09","startHours":10.62955823622432,"endHours":12.153617876621057,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:12","end":"16:44","startHours":15.20173715741453,"endHours":16.72579679781127,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:35","end":"09:06","startHours":7.581438955430846,"endHours":9.105498595827584,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:19","startHours":8.902290643774684,"endHours":9.308706547880481,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:34","end":"06:53","startHours":6.5653991951663535,"endHours":6.890531918450991,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:45","end":"12:34","startHours":11.74720197251526,"endHours":12.560033780726855,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:26","end":"05:15","startHours":4.431715698610922,"endHours":5.244547506822515,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:02","end":"06:03","startHours":5.041339554769617,"endHours":6.057379315034108,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:00","startHours":14.18569739715004,"endHours":14.998529205361633,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:03","end":"18:27","startHours":18.049856438208007,"endHours":18.449856438208005,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:15","end":"18:45","startHours":18.249856438208006,"endHours":18.75787631834025,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:00","end":"19:45","startHours":17.999856438208006,"endHours":19.749856438208006,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:45","end":"00:34","startHours":23.74720197251526,"endHours":24.56003378072685,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:03","end":"07:35","startHours":6.057379315034108,"endHours":7.581438955430846,"quality":"neutral"},{"name":"Labha","start":"07:35","end":"09:06","startHours":7.581438955430846,"endHours":9.105498595827584,"quality":"auspicious"},{"name":"Amṛta","start":"09:06","end":"10:38","startHours":9.105498595827584,"endHours":10.62955823622432,"quality":"auspicious"},{"name":"Kāla","start":"10:38","end":"12:09","startHours":10.62955823622432,"endHours":12.153617876621057,"quality":"inauspicious"},{"name":"Śubha","start":"12:09","end":"13:41","startHours":12.153617876621057,"endHours":13.677677517017795,"quality":"auspicious"},{"name":"Roga","start":"13:41","end":"15:12","startHours":13.677677517017795,"endHours":15.20173715741453,"quality":"inauspicious"},{"name":"Udveg","start":"15:12","end":"16:44","startHours":15.20173715741453,"endHours":16.72579679781127,"quality":"inauspicious"},{"name":"Chala","start":"16:44","end":"18:15","startHours":16.72579679781127,"endHours":18.249856438208006,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:15","end":"19:44","startHours":18.249856438208006,"endHours":19.72579679781127,"quality":"inauspicious"},{"name":"Udveg","start":"19:44","end":"21:12","startHours":19.72579679781127,"endHours":21.20173715741453,"quality":"inauspicious"},{"name":"Chala","start":"21:12","end":"22:41","startHours":21.20173715741453,"endHours":22.677677517017795,"quality":"neutral"},{"name":"Labha","start":"22:41","end":"00:09","startHours":22.677677517017795,"endHours":24.153617876621055,"quality":"auspicious"},{"name":"Amṛta","start":"00:09","end":"01:38","startHours":24.153617876621055,"endHours":25.62955823622432,"quality":"auspicious"},{"name":"Kāla","start":"01:38","end":"03:06","startHours":25.62955823622432,"endHours":27.105498595827584,"quality":"inauspicious"},{"name":"Śubha","start":"03:06","end":"04:35","startHours":27.105498595827584,"endHours":28.581438955430848,"quality":"auspicious"},{"name":"Roga","start":"04:35","end":"06:03","startHours":28.581438955430848,"endHours":30.057379315034108,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:03","end":"07:03","startHours":6.057379315034108,"endHours":7.057379315034108,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:03","end":"08:03","startHours":7.057379315034108,"endHours":8.057379315034108,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:03","end":"09:03","startHours":8.057379315034108,"endHours":9.057379315034108,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:03","end":"10:03","startHours":9.057379315034108,"endHours":10.057379315034108,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:03","end":"11:03","startHours":10.057379315034108,"endHours":11.057379315034108,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:03","end":"12:03","startHours":11.057379315034108,"endHours":12.057379315034108,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:03","end":"13:03","startHours":12.057379315034108,"endHours":13.057379315034108,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:03","end":"14:03","startHours":13.057379315034108,"endHours":14.057379315034108,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:03","end":"15:03","startHours":14.057379315034108,"endHours":15.057379315034108,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:03","end":"16:03","startHours":15.057379315034108,"endHours":16.057379315034108,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:03","end":"17:03","startHours":16.057379315034108,"endHours":17.057379315034108,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:03","end":"18:03","startHours":17.057379315034108,"endHours":18.057379315034108,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:03","end":"19:03","startHours":18.057379315034108,"endHours":19.057379315034108,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:03","end":"20:03","startHours":19.057379315034108,"endHours":20.057379315034108,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:03","end":"21:03","startHours":20.057379315034108,"endHours":21.057379315034108,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:03","end":"22:03","startHours":21.057379315034108,"endHours":22.057379315034108,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:03","end":"23:03","startHours":22.057379315034108,"endHours":23.057379315034108,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:03","end":"00:03","startHours":23.057379315034108,"endHours":24.057379315034108,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:03","end":"01:03","startHours":24.057379315034108,"endHours":25.057379315034108,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:03","end":"02:03","startHours":25.057379315034108,"endHours":26.057379315034108,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:03","end":"03:03","startHours":26.057379315034108,"endHours":27.057379315034108,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:03","end":"04:03","startHours":27.057379315034108,"endHours":28.057379315034108,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:03","end":"05:03","startHours":28.057379315034108,"endHours":29.057379315034108,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:03","end":"06:03","startHours":29.057379315034108,"endHours":30.057379315034108,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":0.8295422481929287,"eotMinutes":7.712527402736593,"ayanamsa":23.4859}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Daśamī · 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":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","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 September 21, 1973 CE · Ṛṣikeśa · Vidhyamitra","description":"September 21, 1973 CE for Ṛṣikeśa: Kṛṣṇa Daśamī, sūryodaya 06:03, sūryāsta 18:15.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1973-09-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1973-09-21","sa":"https://sa.vidhyamitra.com/city/rishikesh/1973-09-21","hi":"https://hi.vidhyamitra.com/city/rishikesh/1973-09-21","x-default":"https://vidhyamitra.com/city/rishikesh/1973-09-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T02:15:27.123Z","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":"2026-06-02T02:15:27.123Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T02:15:27.123Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}