{"id":"vidhyamitra:city-day:rishikesh:1981-08-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1981-08-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-08","date_display":"August 8, 1981 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":1981,"month":8,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444824.770833,"kali_year":5083,"ahargana":1856359.2708,"sun":{"sidereal_longitude":111.29,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":204.1109,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.8209,"elapsed_within_tithi_degrees":8.8209},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":204.1109,"elapsed_within_degrees":4.1109},"yoga":{"number":24,"name":"Śukla","sum_longitude":315.4009},"karana":{"half_tithi_index":15,"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":1981,"month":8,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444824.770833,"ahargana":1856359.2708,"kali_year":5083,"ayanamsa_lahiri":23.596,"grahas":{"sun":{"sidereal_longitude":111.82297299999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":204.32867299999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":4.3852},"mars":{"sidereal_longitude":80.44487300000003,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":109.66907300000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":163.95737299999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":144.073573,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":162.29397300000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":101.1524,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.1524,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":1981,"month":8,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444824.770833,"kali_year":5083,"ahargana":1856359.2708,"sun":{"sidereal_longitude":111.29,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":204.1109,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":92.8209,"elapsed_within_tithi_degrees":8.8209},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":204.1109,"elapsed_within_degrees":4.1109},"yoga":{"number":24,"name":"Śukla","sum_longitude":315.4009},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.385,"elongation":92.821},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.385,"opposition_distance":87.179}},"eclipse_window_40days":[{"offset_days":-8,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:39","sunsetLocal":"19:05","solarNoonLocal":"12:22","dayLengthHours":13.428806603572355,"dayLengthDisplay":"13 Hours 25 Mins 44 Secs","nightLengthDisplay":"10 Hours 34 Mins 16 Secs","moonriseLocal":"13:11","moonsetLocal":"23:54","rahuKala":{"name":"Rāhu Kāla","start":"09:01","end":"10:42","startHours":9.014109636432625,"endHours":10.69271046187917,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:03","end":"15:44","startHours":14.049912112772258,"endHours":15.728512938218802,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:39","end":"07:20","startHours":5.656907985539537,"endHours":7.335508810986082,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:47","end":"09:14","startHours":8.790296193039755,"endHours":9.2379230798255,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:13","end":"06:34","startHours":6.216441594021719,"endHours":6.574543103450314,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:49","startHours":11.923684400539969,"endHours":12.818938174111459,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:52","end":"04:46","startHours":3.866400438396557,"endHours":4.761654211968047,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:39","startHours":4.537840768575174,"endHours":5.656907985539537,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:37","end":"15:30","startHours":14.609445721254438,"endHours":15.504699494825928,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:53","end":"19:17","startHours":18.885714589111892,"endHours":19.28571458911189,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:05","end":"19:39","startHours":19.08571458911189,"endHours":19.64524819759407,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:50","end":"20:35","startHours":18.83571458911189,"endHours":20.58571458911189,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:49","startHours":23.92368440053997,"endHours":24.81893817411146,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:39","end":"07:20","startHours":5.656907985539537,"endHours":7.335508810986082,"quality":"inauspicious"},{"name":"Śubha","start":"07:20","end":"09:01","startHours":7.335508810986082,"endHours":9.014109636432625,"quality":"auspicious"},{"name":"Roga","start":"09:01","end":"10:42","startHours":9.014109636432625,"endHours":10.69271046187917,"quality":"inauspicious"},{"name":"Udveg","start":"10:42","end":"12:22","startHours":10.69271046187917,"endHours":12.371311287325714,"quality":"inauspicious"},{"name":"Chala","start":"12:22","end":"14:03","startHours":12.371311287325714,"endHours":14.049912112772258,"quality":"neutral"},{"name":"Labha","start":"14:03","end":"15:44","startHours":14.049912112772258,"endHours":15.728512938218802,"quality":"auspicious"},{"name":"Amṛta","start":"15:44","end":"17:24","startHours":15.728512938218802,"endHours":17.407113763665347,"quality":"auspicious"},{"name":"Kāla","start":"17:24","end":"19:05","startHours":17.407113763665347,"endHours":19.08571458911189,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:05","end":"20:24","startHours":19.08571458911189,"endHours":20.407113763665347,"quality":"auspicious"},{"name":"Amṛta","start":"20:24","end":"21:44","startHours":20.407113763665347,"endHours":21.728512938218802,"quality":"auspicious"},{"name":"Kāla","start":"21:44","end":"23:03","startHours":21.728512938218802,"endHours":23.049912112772258,"quality":"inauspicious"},{"name":"Śubha","start":"23:03","end":"00:22","startHours":23.049912112772258,"endHours":24.371311287325714,"quality":"auspicious"},{"name":"Roga","start":"00:22","end":"01:42","startHours":24.371311287325714,"endHours":25.69271046187917,"quality":"inauspicious"},{"name":"Udveg","start":"01:42","end":"03:01","startHours":25.69271046187917,"endHours":27.014109636432625,"quality":"inauspicious"},{"name":"Chala","start":"03:01","end":"04:20","startHours":27.014109636432625,"endHours":28.33550881098608,"quality":"neutral"},{"name":"Labha","start":"04:20","end":"05:39","startHours":28.33550881098608,"endHours":29.656907985539537,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:39","end":"06:39","startHours":5.656907985539537,"endHours":6.656907985539537,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:39","end":"07:39","startHours":6.656907985539537,"endHours":7.656907985539537,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:39","end":"08:39","startHours":7.656907985539537,"endHours":8.656907985539537,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:39","end":"09:39","startHours":8.656907985539537,"endHours":9.656907985539537,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:39","end":"10:39","startHours":9.656907985539537,"endHours":10.656907985539537,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:39","end":"11:39","startHours":10.656907985539537,"endHours":11.656907985539537,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:39","end":"12:39","startHours":11.656907985539537,"endHours":12.656907985539537,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:39","end":"13:39","startHours":12.656907985539537,"endHours":13.656907985539537,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:39","end":"14:39","startHours":13.656907985539537,"endHours":14.656907985539537,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:39","end":"15:39","startHours":14.656907985539537,"endHours":15.656907985539537,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:39","end":"16:39","startHours":15.656907985539537,"endHours":16.656907985539537,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:39","end":"17:39","startHours":16.656907985539537,"endHours":17.656907985539537,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:39","end":"18:39","startHours":17.656907985539537,"endHours":18.656907985539537,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:39","end":"19:39","startHours":18.656907985539537,"endHours":19.656907985539537,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:39","end":"20:39","startHours":19.656907985539537,"endHours":20.656907985539537,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:39","end":"21:39","startHours":20.656907985539537,"endHours":21.656907985539537,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:39","end":"22:39","startHours":21.656907985539537,"endHours":22.656907985539537,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:39","end":"23:39","startHours":22.656907985539537,"endHours":23.656907985539537,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:39","end":"00:39","startHours":23.656907985539537,"endHours":24.656907985539537,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:39","end":"01:39","startHours":24.656907985539537,"endHours":25.656907985539537,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:39","end":"02:39","startHours":25.656907985539537,"endHours":26.656907985539537,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:39","end":"03:39","startHours":26.656907985539537,"endHours":27.656907985539537,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:39","end":"04:39","startHours":27.656907985539537,"endHours":28.656907985539537,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:39","end":"05:39","startHours":28.656907985539537,"endHours":29.656907985539537,"planetary_lord":"Mercury"}],"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"North","rahuVasa":"East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":16.210988345014293,"eotMinutes":-5.349077239542768,"ayanamsa":23.596}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Aṣṭamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2}],"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":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","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 August 8, 1981 CE · Ṛṣikeśa · Vidhyamitra","description":"August 8, 1981 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 05:39, sūryāsta 19:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1981-08-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1981-08-08","sa":"https://sa.vidhyamitra.com/city/rishikesh/1981-08-08","hi":"https://hi.vidhyamitra.com/city/rishikesh/1981-08-08","x-default":"https://vidhyamitra.com/city/rishikesh/1981-08-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T16:22:51.342Z","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":"2026-05-18T16:22:51.342Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T16:22:51.342Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}