{"id":"vidhyamitra:city-day:rishikesh:1866-08-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1866-08-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1866-08-25","date_display":"August 25, 1866 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":1866,"month":8,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2402838.770833,"kali_year":4968,"ahargana":1814373.2708,"sun":{"sidereal_longitude":129.2385,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":294.4244,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.1859,"elapsed_within_tithi_degrees":9.1859},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.4244,"elapsed_within_degrees":1.091},"yoga":{"number":5,"name":"Śobhana","sum_longitude":63.6629},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"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":1866,"month":8,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2402838.770833,"ahargana":1814373.2708,"kali_year":4968,"ayanamsa_lahiri":21.9902,"grahas":{"sun":{"sidereal_longitude":129.582946,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":295.629546,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false,"latitude":3.5129},"mars":{"sidereal_longitude":60.28744599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":124.61424599999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":273.68464599999993,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":174.576546,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":196.31364599999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":165.7727,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":345.7727,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1866,"month":8,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2402838.770833,"kali_year":4968,"ahargana":1814373.2708,"sun":{"sidereal_longitude":129.2385,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":294.4244,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.1859,"elapsed_within_tithi_degrees":9.1859},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.4244,"elapsed_within_degrees":1.091},"yoga":{"number":5,"name":"Śobhana","sum_longitude":63.6629},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.513,"elongation":165.186},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.513,"opposition_distance":14.814}},"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":"05:49","sunsetLocal":"18:48","solarNoonLocal":"12:19","dayLengthHours":12.98691591016452,"dayLengthDisplay":"12 Hours 59 Mins 13 Secs","nightLengthDisplay":"11 Hours 00 Mins 47 Secs","moonriseLocal":"17:57","moonsetLocal":"04:49","rahuKala":{"name":"Rāhu Kāla","start":"09:04","end":"10:41","startHours":9.063887756715577,"endHours":10.68725224548614,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:56","end":"15:33","startHours":13.93398122302727,"endHours":15.557345711797836,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:49","end":"07:26","startHours":5.817158779174446,"endHours":7.440523267945011,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:51","end":"09:17","startHours":8.847439158212833,"endHours":9.280336355218317,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:21","end":"06:42","startHours":6.358280275431301,"endHours":6.704598033035688,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:45","startHours":11.87771953725122,"endHours":12.74351393126219,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:05","end":"04:57","startHours":4.08556999115251,"endHours":4.951364385163478,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:44","end":"05:49","startHours":4.734915786660736,"endHours":5.817158779174446,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:20","startHours":14.475102719284124,"endHours":15.34089711329509,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:36","end":"19:00","startHours":18.604074689338965,"endHours":19.004074689338964,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:48","end":"19:21","startHours":18.804074689338965,"endHours":19.34519618559582,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:33","end":"20:18","startHours":18.554074689338965,"endHours":20.304074689338965,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:45","startHours":23.87771953725122,"endHours":24.74351393126219,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:49","end":"07:26","startHours":5.817158779174446,"endHours":7.440523267945011,"quality":"inauspicious"},{"name":"Śubha","start":"07:26","end":"09:04","startHours":7.440523267945011,"endHours":9.063887756715577,"quality":"auspicious"},{"name":"Roga","start":"09:04","end":"10:41","startHours":9.063887756715577,"endHours":10.68725224548614,"quality":"inauspicious"},{"name":"Udveg","start":"10:41","end":"12:19","startHours":10.68725224548614,"endHours":12.310616734256705,"quality":"inauspicious"},{"name":"Chala","start":"12:19","end":"13:56","startHours":12.310616734256705,"endHours":13.93398122302727,"quality":"neutral"},{"name":"Labha","start":"13:56","end":"15:33","startHours":13.93398122302727,"endHours":15.557345711797836,"quality":"auspicious"},{"name":"Amṛta","start":"15:33","end":"17:11","startHours":15.557345711797836,"endHours":17.1807102005684,"quality":"auspicious"},{"name":"Kāla","start":"17:11","end":"18:48","startHours":17.1807102005684,"endHours":18.804074689338965,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:48","end":"20:11","startHours":18.804074689338965,"endHours":20.1807102005684,"quality":"auspicious"},{"name":"Amṛta","start":"20:11","end":"21:33","startHours":20.1807102005684,"endHours":21.557345711797836,"quality":"auspicious"},{"name":"Kāla","start":"21:33","end":"22:56","startHours":21.557345711797836,"endHours":22.93398122302727,"quality":"inauspicious"},{"name":"Śubha","start":"22:56","end":"00:19","startHours":22.93398122302727,"endHours":24.310616734256705,"quality":"auspicious"},{"name":"Roga","start":"00:19","end":"01:41","startHours":24.310616734256705,"endHours":25.68725224548614,"quality":"inauspicious"},{"name":"Udveg","start":"01:41","end":"03:04","startHours":25.68725224548614,"endHours":27.063887756715573,"quality":"inauspicious"},{"name":"Chala","start":"03:04","end":"04:26","startHours":27.063887756715573,"endHours":28.44052326794501,"quality":"neutral"},{"name":"Labha","start":"04:26","end":"05:49","startHours":28.44052326794501,"endHours":29.817158779174445,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:49","end":"06:49","startHours":5.817158779174446,"endHours":6.817158779174446,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:49","end":"07:49","startHours":6.817158779174446,"endHours":7.817158779174446,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:49","end":"08:49","startHours":7.817158779174446,"endHours":8.817158779174445,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:49","end":"09:49","startHours":8.817158779174445,"endHours":9.817158779174445,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:49","end":"10:49","startHours":9.817158779174445,"endHours":10.817158779174445,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:49","end":"11:49","startHours":10.817158779174445,"endHours":11.817158779174445,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:49","end":"12:49","startHours":11.817158779174445,"endHours":12.817158779174445,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:49","end":"13:49","startHours":12.817158779174445,"endHours":13.817158779174445,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:49","end":"14:49","startHours":13.817158779174445,"endHours":14.817158779174445,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:49","end":"15:49","startHours":14.817158779174445,"endHours":15.817158779174445,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:49","end":"16:49","startHours":15.817158779174445,"endHours":16.817158779174445,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:49","end":"17:49","startHours":16.817158779174445,"endHours":17.817158779174445,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:49","end":"18:49","startHours":17.817158779174445,"endHours":18.817158779174445,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:49","end":"19:49","startHours":18.817158779174445,"endHours":19.817158779174445,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:49","end":"20:49","startHours":19.817158779174445,"endHours":20.817158779174445,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:49","end":"21:49","startHours":20.817158779174445,"endHours":21.817158779174445,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:49","end":"22:49","startHours":21.817158779174445,"endHours":22.817158779174445,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:49","end":"23:49","startHours":22.817158779174445,"endHours":23.817158779174445,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:49","end":"00:49","startHours":23.817158779174445,"endHours":24.817158779174445,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:49","end":"01:49","startHours":24.817158779174445,"endHours":25.817158779174445,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:49","end":"02:49","startHours":25.817158779174445,"endHours":26.817158779174445,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:49","end":"03:49","startHours":26.817158779174445,"endHours":27.817158779174445,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:49","end":"04:49","startHours":27.817158779174445,"endHours":28.817158779174445,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:49","end":"05:49","startHours":28.817158779174445,"endHours":29.817158779174445,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Siddhi","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":10.91398656409662,"eotMinutes":-1.7074040554023546,"ayanamsa":21.9902}},"calendars":{"vikram_samvat":1923,"vikram_samvatsara":"Pramāthi","saka_samvat":1788,"saka_samvatsara":"Akṣaya","bengali_samvat":1273,"malayalam_era":1042,"nanakshahi_year":397,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","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":"Śrāvaṇa Śukla Caturdaśī · Vikram 1923 Pramāthi · Śaka 1788 Akṣaya"},"festivals":[],"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 25, 1866 CE · Ṛṣikeśa · Vidhyamitra","description":"August 25, 1866 CE for Ṛṣikeśa: Śukla Caturdaśī, sūryodaya 05:49, sūryāsta 18:48.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1866-08-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1866-08-25","sa":"https://sa.vidhyamitra.com/city/rishikesh/1866-08-25","hi":"https://hi.vidhyamitra.com/city/rishikesh/1866-08-25","x-default":"https://vidhyamitra.com/city/rishikesh/1866-08-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:07:28.708Z","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":"2026-05-31T09:07:28.708Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:07:28.708Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}