{"id":"vidhyamitra:city-day:rishikesh:1957-09-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1957-09-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1957-09-12","date_display":"September 12, 1957 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":1957,"month":9,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436093.770833,"kali_year":5059,"ahargana":1847628.2708,"sun":{"sidereal_longitude":145.129,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":358.8984,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":213.7694,"elapsed_within_tithi_degrees":9.7694},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.8984,"elapsed_within_degrees":12.2317},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":144.0274},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1957,"month":9,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2436093.770833,"ahargana":1847628.2708,"kali_year":5059,"ayanamsa_lahiri":23.262,"grahas":{"sun":{"sidereal_longitude":145.74726099999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":356.735061,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false,"latitude":1.8905},"mars":{"sidereal_longitude":149.45906100000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":142.24666100000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":164.02816099999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":184.70726100000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":225.62416099999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":203.7628,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":23.7628,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"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":1957,"month":9,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436093.770833,"kali_year":5059,"ahargana":1847628.2708,"sun":{"sidereal_longitude":145.129,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":358.8984,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":213.7694,"elapsed_within_tithi_degrees":9.7694},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.8984,"elapsed_within_degrees":12.2317},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":144.0274},"karana":{"half_tithi_index":35,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.891,"elongation":146.231},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.891,"opposition_distance":33.769}},"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":"05:59","sunsetLocal":"18:27","solarNoonLocal":"12:13","dayLengthHours":12.465605701166062,"dayLengthDisplay":"12 Hours 27 Mins 56 Secs","nightLengthDisplay":"11 Hours 32 Mins 04 Secs","moonriseLocal":"19:56","moonsetLocal":"08:37","rahuKala":{"name":"Rāhu Kāla","start":"13:46","end":"15:20","startHours":13.767302120179336,"endHours":15.325502832825094,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:59","end":"07:32","startHours":5.976298556950547,"endHours":7.534499269596305,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:06","end":"10:39","startHours":9.092699982242063,"endHours":10.65090069488782,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.884939887222629,"endHours":9.300460077261498,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:50","startHours":6.495698794499133,"endHours":6.828114946530228,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:37","startHours":11.793581217494708,"endHours":12.624621597572446,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:19","end":"05:09","startHours":4.314217796795072,"endHours":5.14525817687281,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:56","end":"05:59","startHours":4.937498081853375,"endHours":5.976298556950547,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:17","end":"15:07","startHours":14.286702357727922,"endHours":15.11774273780566,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.24190425811661,"endHours":18.641904258116607,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"18:58","startHours":18.441904258116608,"endHours":18.961304495665193,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.191904258116608,"endHours":19.941904258116608,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:37","startHours":23.793581217494708,"endHours":24.624621597572446,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:59","end":"07:32","startHours":5.976298556950547,"endHours":7.534499269596305,"quality":"auspicious"},{"name":"Roga","start":"07:32","end":"09:06","startHours":7.534499269596305,"endHours":9.092699982242063,"quality":"inauspicious"},{"name":"Udveg","start":"09:06","end":"10:39","startHours":9.092699982242063,"endHours":10.65090069488782,"quality":"inauspicious"},{"name":"Chala","start":"10:39","end":"12:13","startHours":10.65090069488782,"endHours":12.209101407533577,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:46","startHours":12.209101407533577,"endHours":13.767302120179336,"quality":"auspicious"},{"name":"Amṛta","start":"13:46","end":"15:20","startHours":13.767302120179336,"endHours":15.325502832825094,"quality":"auspicious"},{"name":"Kāla","start":"15:20","end":"16:53","startHours":15.325502832825094,"endHours":16.88370354547085,"quality":"inauspicious"},{"name":"Śubha","start":"16:53","end":"18:27","startHours":16.88370354547085,"endHours":18.441904258116608,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:27","end":"19:53","startHours":18.441904258116608,"endHours":19.88370354547085,"quality":"auspicious"},{"name":"Kāla","start":"19:53","end":"21:20","startHours":19.88370354547085,"endHours":21.325502832825094,"quality":"inauspicious"},{"name":"Śubha","start":"21:20","end":"22:46","startHours":21.325502832825094,"endHours":22.767302120179334,"quality":"auspicious"},{"name":"Roga","start":"22:46","end":"00:13","startHours":22.767302120179334,"endHours":24.209101407533577,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"01:39","startHours":24.209101407533577,"endHours":25.65090069488782,"quality":"inauspicious"},{"name":"Chala","start":"01:39","end":"03:06","startHours":25.65090069488782,"endHours":27.09269998224206,"quality":"neutral"},{"name":"Labha","start":"03:06","end":"04:32","startHours":27.09269998224206,"endHours":28.534499269596303,"quality":"auspicious"},{"name":"Amṛta","start":"04:32","end":"05:59","startHours":28.534499269596303,"endHours":29.976298556950546,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:59","end":"06:59","startHours":5.976298556950547,"endHours":6.976298556950547,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:59","end":"07:59","startHours":6.976298556950547,"endHours":7.976298556950547,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:59","end":"08:59","startHours":7.976298556950547,"endHours":8.976298556950546,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:59","end":"09:59","startHours":8.976298556950546,"endHours":9.976298556950546,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:59","end":"10:59","startHours":9.976298556950546,"endHours":10.976298556950546,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:59","end":"11:59","startHours":10.976298556950546,"endHours":11.976298556950546,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:59","end":"12:59","startHours":11.976298556950546,"endHours":12.976298556950546,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:59","end":"13:59","startHours":12.976298556950546,"endHours":13.976298556950546,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:59","end":"14:59","startHours":13.976298556950546,"endHours":14.976298556950546,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:59","end":"15:59","startHours":14.976298556950546,"endHours":15.976298556950546,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:59","end":"16:59","startHours":15.976298556950546,"endHours":16.976298556950546,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:59","end":"17:59","startHours":16.976298556950546,"endHours":17.976298556950546,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:59","end":"18:59","startHours":17.976298556950546,"endHours":18.976298556950546,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:59","end":"19:59","startHours":18.976298556950546,"endHours":19.976298556950546,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:59","end":"20:59","startHours":19.976298556950546,"endHours":20.976298556950546,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:59","end":"21:59","startHours":20.976298556950546,"endHours":21.976298556950546,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:59","end":"22:59","startHours":21.976298556950546,"endHours":22.976298556950546,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:59","end":"23:59","startHours":22.976298556950546,"endHours":23.976298556950546,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:59","end":"00:59","startHours":23.976298556950546,"endHours":24.976298556950546,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:59","end":"01:59","startHours":24.976298556950546,"endHours":25.976298556950546,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:59","end":"02:59","startHours":25.976298556950546,"endHours":26.976298556950546,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:59","end":"03:59","startHours":26.976298556950546,"endHours":27.976298556950546,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:59","end":"04:59","startHours":27.976298556950546,"endHours":28.976298556950546,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:59","end":"05:59","startHours":28.976298556950546,"endHours":29.976298556950546,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":4.348788582940402,"eotMinutes":4.383515547985428,"ayanamsa":23.262}},"calendars":{"vikram_samvat":2014,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1879,"saka_samvatsara":"Hemalambī","bengali_samvat":1364,"malayalam_era":1133,"nanakshahi_year":488,"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":"Siṃha (Āvaṇi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Tṛtīyā · Vikram 2014 Sādhāraṇa · Śaka 1879 Hemalambī"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 September 12, 1957 CE · Ṛṣikeśa · Vidhyamitra","description":"September 12, 1957 CE for Ṛṣikeśa: Kṛṣṇa Tṛtīyā, sūryodaya 05:59, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1957-09-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1957-09-12","sa":"https://sa.vidhyamitra.com/city/rishikesh/1957-09-12","hi":"https://hi.vidhyamitra.com/city/rishikesh/1957-09-12","x-default":"https://vidhyamitra.com/city/rishikesh/1957-09-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T21:32:39.125Z","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":"2026-06-02T21:32:39.125Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T21:32:39.125Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}