{"id":"vidhyamitra:city-day:rishikesh:1913-09-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1913-09-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1913-09-15","date_display":"September 15, 1913 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":1913,"month":9,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420025.770833,"kali_year":5015,"ahargana":1831560.2708,"sun":{"sidereal_longitude":148.4185,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":323.6262,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":175.2077,"elapsed_within_tithi_degrees":7.2077},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":323.6262,"elapsed_within_degrees":3.6262},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.0447},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1913,"month":9,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2420025.770833,"ahargana":1831560.2708,"kali_year":5015,"ayanamsa_lahiri":22.6475,"grahas":{"sun":{"sidereal_longitude":148.93807700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":323.578577,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false,"latitude":-0.896},"mars":{"sidereal_longitude":68.18377699999996,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":148.70147699999995,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":256.693077,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":114.655777,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":56.125877,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":335.1228,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":155.1228,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","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":1913,"month":9,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420025.770833,"kali_year":5015,"ahargana":1831560.2708,"sun":{"sidereal_longitude":148.4185,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":323.6262,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":175.2077,"elapsed_within_tithi_degrees":7.2077},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":323.6262,"elapsed_within_degrees":3.6262},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.0447},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.896,"elongation":175.208},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.896,"opposition_distance":4.792}},"eclipse_window_40days":[{"offset_days":-14,"type":"solar","occurs":true,"moon_latitude":1.476,"elongation":1.842},{"offset_days":15,"type":"solar","occurs":true,"moon_latitude":-0.54,"elongation":1.859}]},"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":"06:00","sunsetLocal":"18:23","solarNoonLocal":"12:11","dayLengthHours":12.386780450673145,"dayLengthDisplay":"12 Hours 23 Mins 12 Secs","nightLengthDisplay":"11 Hours 36 Mins 48 Secs","moonriseLocal":"18:00","moonsetLocal":"05:40","rahuKala":{"name":"Rāhu Kāla","start":"07:33","end":"09:06","startHours":7.545506111274198,"endHours":9.093853667608341,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:39","end":"12:11","startHours":10.642201223942486,"endHours":12.190548780276629,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:44","end":"15:17","startHours":13.738896336610772,"endHours":15.287243892944915,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.887407326763789,"endHours":9.300300008452894,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:31","end":"06:51","startHours":6.513274407051436,"endHours":6.84358855240272,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:36","startHours":11.777656098587522,"endHours":12.603441461965732,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:21","end":"05:10","startHours":4.345587828183636,"endHours":5.1713731915618455,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:58","end":"06:00","startHours":4.964926850717293,"endHours":5.9971585549400555,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:15","end":"15:05","startHours":14.255012188722151,"endHours":15.08079755210036,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:11","end":"18:35","startHours":18.1839390056132,"endHours":18.5839390056132,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:23","end":"18:54","startHours":18.3839390056132,"endHours":18.90005485772458,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:08","end":"19:53","startHours":18.1339390056132,"endHours":19.8839390056132,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:36","startHours":23.777656098587524,"endHours":24.603441461965733,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:00","end":"07:33","startHours":5.9971585549400555,"endHours":7.545506111274198,"quality":"auspicious"},{"name":"Kāla","start":"07:33","end":"09:06","startHours":7.545506111274198,"endHours":9.093853667608341,"quality":"inauspicious"},{"name":"Śubha","start":"09:06","end":"10:39","startHours":9.093853667608341,"endHours":10.642201223942486,"quality":"auspicious"},{"name":"Roga","start":"10:39","end":"12:11","startHours":10.642201223942486,"endHours":12.190548780276629,"quality":"inauspicious"},{"name":"Udveg","start":"12:11","end":"13:44","startHours":12.190548780276629,"endHours":13.738896336610772,"quality":"inauspicious"},{"name":"Chala","start":"13:44","end":"15:17","startHours":13.738896336610772,"endHours":15.287243892944915,"quality":"neutral"},{"name":"Labha","start":"15:17","end":"16:50","startHours":15.287243892944915,"endHours":16.835591449279057,"quality":"auspicious"},{"name":"Amṛta","start":"16:50","end":"18:23","startHours":16.835591449279057,"endHours":18.3839390056132,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:23","end":"19:50","startHours":18.3839390056132,"endHours":19.835591449279057,"quality":"neutral"},{"name":"Labha","start":"19:50","end":"21:17","startHours":19.835591449279057,"endHours":21.287243892944915,"quality":"auspicious"},{"name":"Amṛta","start":"21:17","end":"22:44","startHours":21.287243892944915,"endHours":22.73889633661077,"quality":"auspicious"},{"name":"Kāla","start":"22:44","end":"00:11","startHours":22.73889633661077,"endHours":24.19054878027663,"quality":"inauspicious"},{"name":"Śubha","start":"00:11","end":"01:39","startHours":24.19054878027663,"endHours":25.642201223942486,"quality":"auspicious"},{"name":"Roga","start":"01:39","end":"03:06","startHours":25.642201223942486,"endHours":27.093853667608343,"quality":"inauspicious"},{"name":"Udveg","start":"03:06","end":"04:33","startHours":27.093853667608343,"endHours":28.5455061112742,"quality":"inauspicious"},{"name":"Chala","start":"04:33","end":"06:00","startHours":28.5455061112742,"endHours":29.997158554940057,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:00","end":"07:00","startHours":5.9971585549400555,"endHours":6.9971585549400555,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:00","end":"08:00","startHours":6.9971585549400555,"endHours":7.9971585549400555,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:00","end":"09:00","startHours":7.9971585549400555,"endHours":8.997158554940055,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:00","end":"10:00","startHours":8.997158554940055,"endHours":9.997158554940055,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:00","end":"11:00","startHours":9.997158554940055,"endHours":10.997158554940055,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:00","end":"12:00","startHours":10.997158554940055,"endHours":11.997158554940055,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:00","end":"13:00","startHours":11.997158554940055,"endHours":12.997158554940055,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:00","end":"14:00","startHours":12.997158554940055,"endHours":13.997158554940055,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:00","end":"15:00","startHours":13.997158554940055,"endHours":14.997158554940055,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:00","end":"16:00","startHours":14.997158554940055,"endHours":15.997158554940055,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:00","end":"17:00","startHours":15.997158554940055,"endHours":16.997158554940057,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:00","end":"18:00","startHours":16.997158554940057,"endHours":17.997158554940057,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:00","end":"19:00","startHours":17.997158554940057,"endHours":18.997158554940057,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:00","end":"20:00","startHours":18.997158554940057,"endHours":19.997158554940057,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:00","end":"21:00","startHours":19.997158554940057,"endHours":20.997158554940057,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:00","end":"22:00","startHours":20.997158554940057,"endHours":21.997158554940057,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:00","end":"23:00","startHours":21.997158554940057,"endHours":22.997158554940057,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:00","end":"00:00","startHours":22.997158554940057,"endHours":23.997158554940057,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:00","end":"01:00","startHours":23.997158554940057,"endHours":24.997158554940057,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:00","end":"02:00","startHours":24.997158554940057,"endHours":25.997158554940057,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:00","end":"03:00","startHours":25.997158554940057,"endHours":26.997158554940057,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:00","end":"04:00","startHours":26.997158554940057,"endHours":27.997158554940057,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:00","end":"05:00","startHours":27.997158554940057,"endHours":28.997158554940057,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:00","end":"06:00","startHours":28.997158554940057,"endHours":29.997158554940057,"planetary_lord":"Venus"}],"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","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Ānanda","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":3.336557578789925,"eotMinutes":5.496673183402374,"ayanamsa":22.6475}},"calendars":{"vikram_samvat":1970,"vikram_samvatsara":"Akṣaya","saka_samvat":1835,"saka_samvatsara":"Pramādī","bengali_samvat":1320,"malayalam_era":1089,"nanakshahi_year":444,"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":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Pūrṇimā · Vikram 1970 Akṣaya · Śaka 1835 Pramādī"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","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 15, 1913 CE · Ṛṣikeśa · Vidhyamitra","description":"September 15, 1913 CE for Ṛṣikeśa: Śukla Pūrṇimā, sūryodaya 06:00, sūryāsta 18:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1913-09-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1913-09-15","sa":"https://sa.vidhyamitra.com/city/rishikesh/1913-09-15","hi":"https://hi.vidhyamitra.com/city/rishikesh/1913-09-15","x-default":"https://vidhyamitra.com/city/rishikesh/1913-09-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T01:36:45.183Z","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":"2026-06-02T01:36:45.183Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T01:36:45.183Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}