{"id":"vidhyamitra:city-day:rishikesh:1915-12-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1915-12-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1915-12-17","date_display":"December 17, 1915 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":1915,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420848.770833,"kali_year":5017,"ahargana":1832383.2708,"sun":{"sidereal_longitude":241.1694,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":9.877,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":128.7076,"elapsed_within_tithi_degrees":8.7076},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.877,"elapsed_within_degrees":9.877},"yoga":{"number":19,"name":"Parigha","sum_longitude":251.0465},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"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":1915,"month":12,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2420848.770833,"ahargana":1832383.2708,"kali_year":5017,"ayanamsa_lahiri":22.679,"grahas":{"sun":{"sidereal_longitude":241.337132,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":12.271931999999993,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":4.4073},"mars":{"sidereal_longitude":127.00823200000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":243.073932,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":328.39533200000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":266.309532,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":82.56863199999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":291.5163,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":111.5163,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":1915,"month":12,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420848.770833,"kali_year":5017,"ahargana":1832383.2708,"sun":{"sidereal_longitude":241.1694,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":9.877,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":128.7076,"elapsed_within_tithi_degrees":8.7076},"nakshatra":{"number":1,"name":"Aśvinī","pada":3,"moon_longitude":9.877,"elapsed_within_degrees":9.877},"yoga":{"number":19,"name":"Parigha","sum_longitude":251.0465},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.407,"elongation":128.708},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.407,"opposition_distance":51.292}},"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":"07:07","sunsetLocal":"17:20","solarNoonLocal":"12:14","dayLengthHours":10.217330679704027,"dayLengthDisplay":"10 Hours 13 Mins 02 Secs","nightLengthDisplay":"13 Hours 46 Mins 58 Secs","moonriseLocal":"14:23","moonsetLocal":"03:31","rahuKala":{"name":"Rāhu Kāla","start":"10:57","end":"12:14","startHours":10.950770850418525,"endHours":12.227937185381528,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:47","end":"16:04","startHours":14.782269855307534,"endHours":16.05943619027054,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:24","end":"09:40","startHours":8.396438180492517,"endHours":9.673604515455521,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:30","end":"09:51","startHours":9.503315670793787,"endHours":9.843893360117255,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:33","end":"07:49","startHours":7.5449939571838485,"endHours":7.817456108642623,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:34","startHours":11.88735949605806,"endHours":12.568514874704995,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:45","end":"06:26","startHours":5.756961088235644,"endHours":6.43811646688258,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:16","end":"07:07","startHours":6.267827622220845,"endHours":7.119271845529514,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:37","startHours":13.930825631998864,"endHours":14.611981010645799,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:08","end":"17:32","startHours":17.136602525233542,"endHours":17.53660252523354,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:20","end":"17:46","startHours":17.33660252523354,"endHours":17.762324636887875,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:05","end":"18:50","startHours":17.08660252523354,"endHours":18.83660252523354,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:34","startHours":23.88735949605806,"endHours":24.568514874704995,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:07","end":"08:24","startHours":7.119271845529514,"endHours":8.396438180492517,"quality":"neutral"},{"name":"Labha","start":"08:24","end":"09:40","startHours":8.396438180492517,"endHours":9.673604515455521,"quality":"auspicious"},{"name":"Amṛta","start":"09:40","end":"10:57","startHours":9.673604515455521,"endHours":10.950770850418525,"quality":"auspicious"},{"name":"Kāla","start":"10:57","end":"12:14","startHours":10.950770850418525,"endHours":12.227937185381528,"quality":"inauspicious"},{"name":"Śubha","start":"12:14","end":"13:30","startHours":12.227937185381528,"endHours":13.50510352034453,"quality":"auspicious"},{"name":"Roga","start":"13:30","end":"14:47","startHours":13.50510352034453,"endHours":14.782269855307534,"quality":"inauspicious"},{"name":"Udveg","start":"14:47","end":"16:04","startHours":14.782269855307534,"endHours":16.05943619027054,"quality":"inauspicious"},{"name":"Chala","start":"16:04","end":"17:20","startHours":16.05943619027054,"endHours":17.33660252523354,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:20","end":"19:04","startHours":17.33660252523354,"endHours":19.05943619027054,"quality":"inauspicious"},{"name":"Udveg","start":"19:04","end":"20:47","startHours":19.05943619027054,"endHours":20.782269855307533,"quality":"inauspicious"},{"name":"Chala","start":"20:47","end":"22:30","startHours":20.782269855307533,"endHours":22.50510352034453,"quality":"neutral"},{"name":"Labha","start":"22:30","end":"00:14","startHours":22.50510352034453,"endHours":24.227937185381528,"quality":"auspicious"},{"name":"Amṛta","start":"00:14","end":"01:57","startHours":24.227937185381528,"endHours":25.950770850418525,"quality":"auspicious"},{"name":"Kāla","start":"01:57","end":"03:40","startHours":25.950770850418525,"endHours":27.673604515455523,"quality":"inauspicious"},{"name":"Śubha","start":"03:40","end":"05:24","startHours":27.673604515455523,"endHours":29.396438180492517,"quality":"auspicious"},{"name":"Roga","start":"05:24","end":"07:07","startHours":29.396438180492517,"endHours":31.119271845529514,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:07","end":"08:07","startHours":7.119271845529514,"endHours":8.119271845529514,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:07","end":"09:07","startHours":8.119271845529514,"endHours":9.119271845529514,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:07","end":"10:07","startHours":9.119271845529514,"endHours":10.119271845529514,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:07","end":"11:07","startHours":10.119271845529514,"endHours":11.119271845529514,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:07","end":"12:07","startHours":11.119271845529514,"endHours":12.119271845529514,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:07","end":"13:07","startHours":12.119271845529514,"endHours":13.119271845529514,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:07","end":"14:07","startHours":13.119271845529514,"endHours":14.119271845529514,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:07","end":"15:07","startHours":14.119271845529514,"endHours":15.119271845529514,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:07","end":"16:07","startHours":15.119271845529514,"endHours":16.119271845529514,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:07","end":"17:07","startHours":16.119271845529514,"endHours":17.119271845529514,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:07","end":"18:07","startHours":17.119271845529514,"endHours":18.119271845529514,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:07","end":"19:07","startHours":18.119271845529514,"endHours":19.119271845529514,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:07","end":"20:07","startHours":19.119271845529514,"endHours":20.119271845529514,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:07","end":"21:07","startHours":20.119271845529514,"endHours":21.119271845529514,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:07","end":"22:07","startHours":21.119271845529514,"endHours":22.119271845529514,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:07","end":"23:07","startHours":22.119271845529514,"endHours":23.119271845529514,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:07","end":"00:07","startHours":23.119271845529514,"endHours":24.119271845529514,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:07","end":"01:07","startHours":24.119271845529514,"endHours":25.119271845529514,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:07","end":"02:07","startHours":25.119271845529514,"endHours":26.119271845529514,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:07","end":"03:07","startHours":26.119271845529514,"endHours":27.119271845529514,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:07","end":"04:07","startHours":27.119271845529514,"endHours":28.119271845529514,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:07","end":"05:07","startHours":28.119271845529514,"endHours":29.119271845529514,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:07","end":"06:07","startHours":29.119271845529514,"endHours":30.119271845529514,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:07","end":"07:07","startHours":30.119271845529514,"endHours":31.119271845529514,"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":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.30123696938879,"eotMinutes":3.253368877108411,"ayanamsa":22.679}},"calendars":{"vikram_samvat":1972,"vikram_samvatsara":"Vibhava","saka_samvat":1837,"saka_samvatsara":"Rākṣasa","bengali_samvat":1322,"malayalam_era":1091,"nanakshahi_year":446,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Ekādaśī · Vikram 1972 Vibhava · Śaka 1837 Rākṣasa"},"festivals":[{"id":"gita-jayanti","name":"Gītā Jayantī (= Mokṣadā Ekādaśī)","name_sanskrit":"गीता जयन्ती","tradition":"Vaishnava","associated_deity":"Krishna (Bhagavad-Gītā speaker)","significance":"Day Bhagavad Gītā was delivered at Kurukṣetra (Mahābhārata Day 1).","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":1,"related_chart":"krishna","historical_anchor":{"event":"Bhagavad Gītā delivered at Kurukṣetra (Mahābhārata Day 1)","date_julian":"-3137-10-04","location":"Kurukṣetra"},"sources":["Bhagavad Gītā (Mahābhārata, Bhīṣma Parva)"]},{"id":"vaikuntha-ekadashi","name":"Vaikuṇṭha Ekādaśī","name_sanskrit":"वैकुण्ठ एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Most sacred Ekādaśī of the year; 'Vaikuṇṭha-dvāram udghaṭitam'.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":2},{"id":"mokshada-ekadashi","name":"Mokṣadā Ekādaśī (Gītā Jayantī)","name_sanskrit":"मोक्षदा एकादशी / गीता जयन्ती","tradition":"Vaishnava","associated_deity":"Krishna (Bhagavad Gītā delivery)","significance":"Day Bhagavad Gītā was delivered at Kurukṣetra.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Mārgaśīrṣa"},"precedence":3},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"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 December 17, 1915 CE · Ṛṣikeśa · Vidhyamitra","description":"December 17, 1915 CE for Ṛṣikeśa: Śukla Ekādaśī, sūryodaya 07:07, sūryāsta 17:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1915-12-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1915-12-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/1915-12-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/1915-12-17","x-default":"https://vidhyamitra.com/city/rishikesh/1915-12-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:11:14.625Z","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":"2026-06-01T08:11:14.625Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:11:14.625Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}