{"id":"vidhyamitra:city-day:rishikesh:2013-08-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2013-08-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2013-08-17","date_display":"August 17, 2013 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":2013,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456521.770833,"kali_year":5115,"ahargana":1868056.2708,"sun":{"sidereal_longitude":119.6148,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":246.539,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":126.9242,"elapsed_within_tithi_degrees":6.9242},"nakshatra":{"number":19,"name":"Mūla","pada":2,"moon_longitude":246.539,"elapsed_within_degrees":6.539},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":6.1538},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"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":2013,"month":8,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456521.770833,"ahargana":1868056.2708,"kali_year":5115,"ayanamsa_lahiri":24.0433,"grahas":{"sun":{"sidereal_longitude":120.27056099999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":244.504861,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false,"latitude":3.1887},"mars":{"sidereal_longitude":88.66626100000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":111.90426100000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":76.66676100000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":156.23576100000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":191.78376100000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":201.3891,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":21.3891,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":2013,"month":8,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456521.770833,"kali_year":5115,"ahargana":1868056.2708,"sun":{"sidereal_longitude":119.6148,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":246.539,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":126.9242,"elapsed_within_tithi_degrees":6.9242},"nakshatra":{"number":19,"name":"Mūla","pada":2,"moon_longitude":246.539,"elapsed_within_degrees":6.539},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":6.1538},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.189,"elongation":126.924},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.189,"opposition_distance":53.076}},"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":"05:45","sunsetLocal":"18:56","solarNoonLocal":"12:21","dayLengthHours":13.192524120466857,"dayLengthDisplay":"13 Hours 11 Mins 33 Secs","nightLengthDisplay":"10 Hours 48 Mins 27 Secs","moonriseLocal":"15:33","moonsetLocal":"01:42","rahuKala":{"name":"Rāhu Kāla","start":"09:03","end":"10:42","startHours":9.046588662451917,"endHours":10.695654177510274,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:00","end":"15:39","startHours":13.993785207626988,"endHours":15.642850722685345,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:45","end":"07:24","startHours":5.748457632335202,"endHours":7.397523147393559,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:50","end":"09:16","startHours":8.826713260444135,"endHours":9.266464064459697,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:18","end":"06:39","startHours":6.298146137354655,"endHours":6.649946780567104,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:47","startHours":11.90496888855307,"endHours":12.784470496584193,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:59","end":"04:52","startHours":3.9894544162729546,"endHours":4.868956024304079,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:39","end":"05:45","startHours":4.649080622296298,"endHours":5.748457632335202,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:33","end":"15:25","startHours":14.543473712646438,"endHours":15.422975320677562,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:44","end":"19:08","startHours":18.74098175280206,"endHours":19.14098175280206,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:56","end":"19:29","startHours":18.94098175280206,"endHours":19.490670257821513,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:41","end":"20:26","startHours":18.69098175280206,"endHours":20.44098175280206,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:47","startHours":23.904968888553068,"endHours":24.784470496584195,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:45","end":"07:24","startHours":5.748457632335202,"endHours":7.397523147393559,"quality":"inauspicious"},{"name":"Śubha","start":"07:24","end":"09:03","startHours":7.397523147393559,"endHours":9.046588662451917,"quality":"auspicious"},{"name":"Roga","start":"09:03","end":"10:42","startHours":9.046588662451917,"endHours":10.695654177510274,"quality":"inauspicious"},{"name":"Udveg","start":"10:42","end":"12:21","startHours":10.695654177510274,"endHours":12.344719692568631,"quality":"inauspicious"},{"name":"Chala","start":"12:21","end":"14:00","startHours":12.344719692568631,"endHours":13.993785207626988,"quality":"neutral"},{"name":"Labha","start":"14:00","end":"15:39","startHours":13.993785207626988,"endHours":15.642850722685345,"quality":"auspicious"},{"name":"Amṛta","start":"15:39","end":"17:18","startHours":15.642850722685345,"endHours":17.291916237743703,"quality":"auspicious"},{"name":"Kāla","start":"17:18","end":"18:56","startHours":17.291916237743703,"endHours":18.94098175280206,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:56","end":"20:18","startHours":18.94098175280206,"endHours":20.291916237743703,"quality":"auspicious"},{"name":"Amṛta","start":"20:18","end":"21:39","startHours":20.291916237743703,"endHours":21.642850722685345,"quality":"auspicious"},{"name":"Kāla","start":"21:39","end":"23:00","startHours":21.642850722685345,"endHours":22.99378520762699,"quality":"inauspicious"},{"name":"Śubha","start":"23:00","end":"00:21","startHours":22.99378520762699,"endHours":24.34471969256863,"quality":"auspicious"},{"name":"Roga","start":"00:21","end":"01:42","startHours":24.34471969256863,"endHours":25.695654177510274,"quality":"inauspicious"},{"name":"Udveg","start":"01:42","end":"03:03","startHours":25.695654177510274,"endHours":27.046588662451917,"quality":"inauspicious"},{"name":"Chala","start":"03:03","end":"04:24","startHours":27.046588662451917,"endHours":28.39752314739356,"quality":"neutral"},{"name":"Labha","start":"04:24","end":"05:45","startHours":28.39752314739356,"endHours":29.748457632335203,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.748457632335202,"endHours":6.748457632335202,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.748457632335202,"endHours":7.748457632335202,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.748457632335202,"endHours":8.748457632335203,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.748457632335203,"endHours":9.748457632335203,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.748457632335203,"endHours":10.748457632335203,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.748457632335203,"endHours":11.748457632335203,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.748457632335203,"endHours":12.748457632335203,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.748457632335203,"endHours":13.748457632335203,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.748457632335203,"endHours":14.748457632335203,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.748457632335203,"endHours":15.748457632335203,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.748457632335203,"endHours":16.748457632335203,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.748457632335203,"endHours":17.748457632335203,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.748457632335203,"endHours":18.748457632335203,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.748457632335203,"endHours":19.748457632335203,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.748457632335203,"endHours":20.748457632335203,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.748457632335203,"endHours":21.748457632335203,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.748457632335203,"endHours":22.748457632335203,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.748457632335203,"endHours":23.748457632335203,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.748457632335203,"endHours":24.748457632335203,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.748457632335203,"endHours":25.748457632335203,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.748457632335203,"endHours":26.748457632335203,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.748457632335203,"endHours":27.748457632335203,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.748457632335203,"endHours":28.748457632335203,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.748457632335203,"endHours":29.748457632335203,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.41574037965526,"eotMinutes":-3.7535815541179196,"ayanamsa":24.0433}},"calendars":{"vikram_samvat":2070,"vikram_samvatsara":"Parābhava","saka_samvat":1935,"saka_samvatsara":"Vijaya","bengali_samvat":1420,"malayalam_era":1189,"nanakshahi_year":544,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Ekādaśī · Vikram 2070 Parābhava · Śaka 1935 Vijaya"},"festivals":[{"id":"parsva-ekadashi","name":"Pārśva (Parivartinī) Ekādaśī","name_sanskrit":"पार्श्व एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu (turning side in yoga-nidrā)","significance":"Viṣṇu turns from one side to another in yoga-nidrā (mid-Cāturmāsya).","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"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},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"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 August 17, 2013 CE · Ṛṣikeśa · Vidhyamitra","description":"August 17, 2013 CE for Ṛṣikeśa: Śukla Ekādaśī, sūryodaya 05:45, sūryāsta 18:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2013-08-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2013-08-17","sa":"https://sa.vidhyamitra.com/city/rishikesh/2013-08-17","hi":"https://hi.vidhyamitra.com/city/rishikesh/2013-08-17","x-default":"https://vidhyamitra.com/city/rishikesh/2013-08-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T23:27:38.128Z","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":"2026-05-16T23:27:38.128Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T23:27:38.128Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}