{"id":"vidhyamitra:city-day:rishikesh:1955-09-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1955-09-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1955-09-17","date_display":"September 17, 1955 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":1955,"month":9,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435367.770833,"kali_year":5057,"ahargana":1846902.2708,"sun":{"sidereal_longitude":149.5203,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":161.0738,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":11.5535,"elapsed_within_tithi_degrees":11.5535},"nakshatra":{"number":13,"name":"Hasta","pada":1,"moon_longitude":161.0738,"elapsed_within_degrees":1.0738},"yoga":{"number":24,"name":"Śukla","sum_longitude":310.5942},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":1955,"month":9,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2435367.770833,"ahargana":1846902.2708,"kali_year":5057,"ayanamsa_lahiri":23.2343,"grahas":{"sun":{"sidereal_longitude":150.14349900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":159.68169899999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false,"latitude":-4.4464},"mars":{"sidereal_longitude":140.51819899999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":177.22029900000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":117.13919900000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":155.03249900000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":204.339199,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":242.2298,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":62.2298,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","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":1955,"month":9,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435367.770833,"kali_year":5057,"ahargana":1846902.2708,"sun":{"sidereal_longitude":149.5203,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":161.0738,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":11.5535,"elapsed_within_tithi_degrees":11.5535},"nakshatra":{"number":13,"name":"Hasta","pada":1,"moon_longitude":161.0738,"elapsed_within_degrees":1.0738},"yoga":{"number":24,"name":"Śukla","sum_longitude":310.5942},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.446,"elongation":11.553},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.446,"opposition_distance":168.447}},"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":"06:01","sunsetLocal":"18:21","solarNoonLocal":"12:11","dayLengthHours":12.331823288350565,"dayLengthDisplay":"12 Hours 19 Mins 55 Secs","nightLengthDisplay":"11 Hours 40 Mins 05 Secs","moonriseLocal":"06:49","moonsetLocal":"18:49","rahuKala":{"name":"Rāhu Kāla","start":"09:06","end":"10:38","startHours":9.095211448656228,"endHours":10.63668935970005,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:43","end":"15:16","startHours":13.71964518178769,"endHours":15.261123092831511,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:01","end":"07:33","startHours":6.012255626568587,"endHours":7.553733537612407,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.889681060517052,"endHours":9.300741836795403,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:32","end":"06:51","startHours":6.526081596916527,"endHours":6.854930217939209,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:35","startHours":11.767106494465517,"endHours":12.589228047022223,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:22","end":"05:11","startHours":4.368012521455178,"endHours":5.190134074011882,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:59","end":"06:01","startHours":4.984603685872706,"endHours":6.012255626568587,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:14","end":"15:03","startHours":14.23347115213563,"endHours":15.055592704692334,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:09","end":"18:33","startHours":18.144078914919152,"endHours":18.54407891491915,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:21","end":"18:51","startHours":18.34407891491915,"endHours":18.857904885267093,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:06","end":"19:51","startHours":18.09407891491915,"endHours":19.84407891491915,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:35","startHours":23.76710649446552,"endHours":24.58922804702222,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:01","end":"07:33","startHours":6.012255626568587,"endHours":7.553733537612407,"quality":"inauspicious"},{"name":"Śubha","start":"07:33","end":"09:06","startHours":7.553733537612407,"endHours":9.095211448656228,"quality":"auspicious"},{"name":"Roga","start":"09:06","end":"10:38","startHours":9.095211448656228,"endHours":10.63668935970005,"quality":"inauspicious"},{"name":"Udveg","start":"10:38","end":"12:11","startHours":10.63668935970005,"endHours":12.17816727074387,"quality":"inauspicious"},{"name":"Chala","start":"12:11","end":"13:43","startHours":12.17816727074387,"endHours":13.71964518178769,"quality":"neutral"},{"name":"Labha","start":"13:43","end":"15:16","startHours":13.71964518178769,"endHours":15.261123092831511,"quality":"auspicious"},{"name":"Amṛta","start":"15:16","end":"16:48","startHours":15.261123092831511,"endHours":16.80260100387533,"quality":"auspicious"},{"name":"Kāla","start":"16:48","end":"18:21","startHours":16.80260100387533,"endHours":18.34407891491915,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:21","end":"19:48","startHours":18.34407891491915,"endHours":19.80260100387533,"quality":"auspicious"},{"name":"Amṛta","start":"19:48","end":"21:16","startHours":19.80260100387533,"endHours":21.26112309283151,"quality":"auspicious"},{"name":"Kāla","start":"21:16","end":"22:43","startHours":21.26112309283151,"endHours":22.71964518178769,"quality":"inauspicious"},{"name":"Śubha","start":"22:43","end":"00:11","startHours":22.71964518178769,"endHours":24.17816727074387,"quality":"auspicious"},{"name":"Roga","start":"00:11","end":"01:38","startHours":24.17816727074387,"endHours":25.63668935970005,"quality":"inauspicious"},{"name":"Udveg","start":"01:38","end":"03:06","startHours":25.63668935970005,"endHours":27.09521144865623,"quality":"inauspicious"},{"name":"Chala","start":"03:06","end":"04:33","startHours":27.09521144865623,"endHours":28.55373353761241,"quality":"neutral"},{"name":"Labha","start":"04:33","end":"06:01","startHours":28.55373353761241,"endHours":30.01225562656859,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.012255626568587,"endHours":7.012255626568587,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.012255626568587,"endHours":8.012255626568587,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.012255626568587,"endHours":9.012255626568587,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.012255626568587,"endHours":10.012255626568587,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.012255626568587,"endHours":11.012255626568587,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.012255626568587,"endHours":12.012255626568587,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.012255626568587,"endHours":13.012255626568587,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.012255626568587,"endHours":14.012255626568587,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.012255626568587,"endHours":15.012255626568587,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.012255626568587,"endHours":16.01225562656859,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.01225562656859,"endHours":17.01225562656859,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.01225562656859,"endHours":18.01225562656859,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.01225562656859,"endHours":19.01225562656859,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.01225562656859,"endHours":20.01225562656859,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.01225562656859,"endHours":21.01225562656859,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.01225562656859,"endHours":22.01225562656859,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.01225562656859,"endHours":23.01225562656859,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.01225562656859,"endHours":24.01225562656859,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.01225562656859,"endHours":25.01225562656859,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.01225562656859,"endHours":26.01225562656859,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.01225562656859,"endHours":27.01225562656859,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.01225562656859,"endHours":28.01225562656859,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.01225562656859,"endHours":29.01225562656859,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.01225562656859,"endHours":30.01225562656859,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":2.6289264588391252,"eotMinutes":6.239563755367786,"ayanamsa":23.2343}},"calendars":{"vikram_samvat":2012,"vikram_samvatsara":"Kīlaka","saka_samvat":1877,"saka_samvatsara":"Manmatha","bengali_samvat":1362,"malayalam_era":1131,"nanakshahi_year":486,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","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":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Pratipada · Vikram 2012 Kīlaka · Śaka 1877 Manmatha"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi_ingress":"Kanyā"},"precedence":4}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 17, 1955 CE · Ṛṣikeśa · Vidhyamitra","description":"September 17, 1955 CE for Ṛṣikeśa: Śukla Pratipada, sūryodaya 06:01, sūryāsta 18:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1955-09-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1955-09-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/1955-09-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/1955-09-17","x-default":"https://vidhyamitra.com/city/rishikesh/1955-09-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T00:22:11.510Z","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":"2026-06-02T00:22:11.510Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T00:22:11.510Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}