{"id":"vidhyamitra:city-day:rishikesh:1978-09-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1978-09-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-09-10","date_display":"September 10, 1978 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":1978,"month":9,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443761.770833,"kali_year":5080,"ahargana":1855296.2708,"sun":{"sidereal_longitude":142.7684,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":233.9755,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.2071,"elapsed_within_tithi_degrees":7.2071},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3,"moon_longitude":233.9755,"elapsed_within_degrees":7.3088},"yoga":{"number":2,"name":"Prīti","sum_longitude":16.7439},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1978,"month":9,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443761.770833,"ahargana":1855296.2708,"kali_year":5080,"ayanamsa_lahiri":23.5553,"grahas":{"sun":{"sidereal_longitude":143.43188699999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":232.198087,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":4.3754},"mars":{"sidereal_longitude":180.14878699999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":127.14508699999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":97.05278699999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"venus":{"sidereal_longitude":189.29758700000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":131.963487,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":157.4753,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":337.4753,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1978,"month":9,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443761.770833,"kali_year":5080,"ahargana":1855296.2708,"sun":{"sidereal_longitude":142.7684,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":233.9755,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":91.2071,"elapsed_within_tithi_degrees":7.2071},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3,"moon_longitude":233.9755,"elapsed_within_degrees":7.3088},"yoga":{"number":2,"name":"Prīti","sum_longitude":16.7439},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.375,"elongation":91.207},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.375,"opposition_distance":88.793}},"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":"05:57","sunsetLocal":"18:29","solarNoonLocal":"12:13","dayLengthHours":12.527280065311775,"dayLengthDisplay":"12 Hours 31 Mins 38 Secs","nightLengthDisplay":"11 Hours 28 Mins 22 Secs","moonriseLocal":"13:01","moonsetLocal":"23:15","rahuKala":{"name":"Rāhu Kāla","start":"16:55","end":"18:29","startHours":16.91910839486448,"endHours":18.48501840302845,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:13","end":"13:47","startHours":12.221378370372566,"endHours":13.787288378536537,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:21","end":"16:55","startHours":15.353198386700509,"endHours":16.91910839486448,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.880770352956091,"endHours":9.298346355133152,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:29","end":"06:49","startHours":6.479708340438002,"endHours":6.813769142179649,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:38","startHours":11.803802368195505,"endHours":12.638954372549623,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:17","end":"05:07","startHours":4.287434329008441,"endHours":5.122586333362559,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:55","end":"05:57","startHours":4.91379833227403,"endHours":5.957738337716678,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:09","startHours":14.309258381257859,"endHours":15.144410385611977,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:17","end":"18:41","startHours":18.285018403028452,"endHours":18.68501840302845,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:29","end":"19:00","startHours":18.48501840302845,"endHours":19.006988405749777,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:14","end":"19:59","startHours":18.23501840302845,"endHours":19.98501840302845,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:38","startHours":23.8038023681955,"endHours":24.638954372549623,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:57","end":"07:31","startHours":5.957738337716678,"endHours":7.52364834588065,"quality":"inauspicious"},{"name":"Chala","start":"07:31","end":"09:05","startHours":7.52364834588065,"endHours":9.089558354044621,"quality":"neutral"},{"name":"Labha","start":"09:05","end":"10:39","startHours":9.089558354044621,"endHours":10.655468362208595,"quality":"auspicious"},{"name":"Amṛta","start":"10:39","end":"12:13","startHours":10.655468362208595,"endHours":12.221378370372566,"quality":"auspicious"},{"name":"Kāla","start":"12:13","end":"13:47","startHours":12.221378370372566,"endHours":13.787288378536537,"quality":"inauspicious"},{"name":"Śubha","start":"13:47","end":"15:21","startHours":13.787288378536537,"endHours":15.353198386700509,"quality":"auspicious"},{"name":"Roga","start":"15:21","end":"16:55","startHours":15.353198386700509,"endHours":16.91910839486448,"quality":"inauspicious"},{"name":"Udveg","start":"16:55","end":"18:29","startHours":16.91910839486448,"endHours":18.48501840302845,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:29","end":"19:55","startHours":18.48501840302845,"endHours":19.91910839486448,"quality":"auspicious"},{"name":"Roga","start":"19:55","end":"21:21","startHours":19.91910839486448,"endHours":21.35319838670051,"quality":"inauspicious"},{"name":"Udveg","start":"21:21","end":"22:47","startHours":21.35319838670051,"endHours":22.787288378536537,"quality":"inauspicious"},{"name":"Chala","start":"22:47","end":"00:13","startHours":22.787288378536537,"endHours":24.221378370372562,"quality":"neutral"},{"name":"Labha","start":"00:13","end":"01:39","startHours":24.221378370372562,"endHours":25.655468362208595,"quality":"auspicious"},{"name":"Amṛta","start":"01:39","end":"03:05","startHours":25.655468362208595,"endHours":27.08955835404462,"quality":"auspicious"},{"name":"Kāla","start":"03:05","end":"04:31","startHours":27.08955835404462,"endHours":28.52364834588065,"quality":"inauspicious"},{"name":"Śubha","start":"04:31","end":"05:57","startHours":28.52364834588065,"endHours":29.957738337716677,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:57","end":"06:57","startHours":5.957738337716678,"endHours":6.957738337716678,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:57","end":"07:57","startHours":6.957738337716678,"endHours":7.957738337716678,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:57","end":"08:57","startHours":7.957738337716678,"endHours":8.957738337716677,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:57","end":"09:57","startHours":8.957738337716677,"endHours":9.957738337716677,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:57","end":"10:57","startHours":9.957738337716677,"endHours":10.957738337716677,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:57","end":"11:57","startHours":10.957738337716677,"endHours":11.957738337716677,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:57","end":"12:57","startHours":11.957738337716677,"endHours":12.957738337716677,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:57","end":"13:57","startHours":12.957738337716677,"endHours":13.957738337716677,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:57","end":"14:57","startHours":13.957738337716677,"endHours":14.957738337716677,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:57","end":"15:57","startHours":14.957738337716677,"endHours":15.957738337716677,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:57","end":"16:57","startHours":15.957738337716677,"endHours":16.957738337716677,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:57","end":"17:57","startHours":16.957738337716677,"endHours":17.957738337716677,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:57","end":"18:57","startHours":17.957738337716677,"endHours":18.957738337716677,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:57","end":"19:57","startHours":18.957738337716677,"endHours":19.957738337716677,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:57","end":"20:57","startHours":19.957738337716677,"endHours":20.957738337716677,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:57","end":"21:57","startHours":20.957738337716677,"endHours":21.957738337716677,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:57","end":"22:57","startHours":21.957738337716677,"endHours":22.957738337716677,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:57","end":"23:57","startHours":22.957738337716677,"endHours":23.957738337716677,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:57","end":"00:57","startHours":23.957738337716677,"endHours":24.957738337716677,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:57","end":"01:57","startHours":24.957738337716677,"endHours":25.957738337716677,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:57","end":"02:57","startHours":25.957738337716677,"endHours":26.957738337716677,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:57","end":"03:57","startHours":26.957738337716677,"endHours":27.957738337716677,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:57","end":"04:57","startHours":27.957738337716677,"endHours":28.957738337716677,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:57","end":"05:57","startHours":28.957738337716677,"endHours":29.957738337716677,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":5.138122096031498,"eotMinutes":3.6468977776461458,"ayanamsa":23.5553}},"calendars":{"vikram_samvat":2035,"vikram_samvatsara":"Prajāpati","saka_samvat":1900,"saka_samvatsara":"Kālayukta","bengali_samvat":1385,"malayalam_era":1154,"nanakshahi_year":509,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Aṣṭamī · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"festivals":[{"id":"radhashtami","name":"Rādhāṣṭamī","name_sanskrit":"राधाष्टमी","tradition":"Vaishnava","associated_deity":"Śrī Rādhā (Krishna's hlādinī-śakti)","significance":"Manifestation of Śrī Rādhā at Barsānā — Krishna's ādi-śakti.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":2,"sources":["Padma Purāṇa","Brahma-Vaivarta Purāṇa"]},{"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":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5},{"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}]},"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 10, 1978 CE · Ṛṣikeśa · Vidhyamitra","description":"September 10, 1978 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 05:57, sūryāsta 18:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1978-09-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1978-09-10","sa":"https://sa.vidhyamitra.com/city/rishikesh/1978-09-10","hi":"https://hi.vidhyamitra.com/city/rishikesh/1978-09-10","x-default":"https://vidhyamitra.com/city/rishikesh/1978-09-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T01:14:45.919Z","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":"2026-05-19T01:14:45.919Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T01:14:45.919Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}