{"id":"vidhyamitra:city-day:rishikesh:1979-09-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1979-09-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-09-04","date_display":"September 4, 1979 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":1979,"month":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444120.770833,"kali_year":5081,"ahargana":1855655.2708,"sun":{"sidereal_longitude":136.7144,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":284.3068,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":147.5925,"elapsed_within_tithi_degrees":3.5925},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.3068,"elapsed_within_degrees":4.3068},"yoga":{"number":5,"name":"Śobhana","sum_longitude":61.0212},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1979,"month":9,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444120.770833,"ahargana":1855655.2708,"kali_year":5081,"ayanamsa_lahiri":23.5691,"grahas":{"sun":{"sidereal_longitude":137.36107000000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":283.13517,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false,"latitude":2.5241},"mars":{"sidereal_longitude":83.87676999999996,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":128.95387,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":120.93957,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":140.26657,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":142.64986999999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":138.4537,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":318.4537,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1979,"month":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444120.770833,"kali_year":5081,"ahargana":1855655.2708,"sun":{"sidereal_longitude":136.7144,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":284.3068,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":147.5925,"elapsed_within_tithi_degrees":3.5925},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2,"moon_longitude":284.3068,"elapsed_within_degrees":4.3068},"yoga":{"number":5,"name":"Śobhana","sum_longitude":61.0212},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.524,"elongation":147.592},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.524,"opposition_distance":32.408}},"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":"05:54","sunsetLocal":"18:37","solarNoonLocal":"12:15","dayLengthHours":12.710555762301212,"dayLengthDisplay":"12 Hours 42 Mins 38 Secs","nightLengthDisplay":"11 Hours 17 Mins 22 Secs","moonriseLocal":"16:41","moonsetLocal":"03:16","rahuKala":{"name":"Rāhu Kāla","start":"15:26","end":"17:01","startHours":15.434835005621036,"endHours":17.023654475908685,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:05","end":"10:40","startHours":9.07955712447043,"endHours":10.66837659475808,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:15","end":"13:51","startHours":12.257196065045733,"endHours":13.846015535333382,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:17","startHours":8.867714528432074,"endHours":9.291399720508782,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:26","end":"06:46","startHours":6.43152467399101,"endHours":6.770472827652376,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:41","startHours":11.833510872969025,"endHours":12.68088125712244,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:12","end":"05:03","startHours":4.207177415588298,"endHours":5.054547799741712,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:51","end":"05:54","startHours":4.842705203703359,"endHours":5.901918183895126,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:13","startHours":14.37562202542927,"endHours":15.222992409582684,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:25","end":"18:49","startHours":18.41247394619634,"endHours":18.812473946196338,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:37","end":"19:09","startHours":18.61247394619634,"endHours":19.142080436292222,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:22","end":"20:07","startHours":18.36247394619634,"endHours":20.11247394619634,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:41","startHours":23.833510872969025,"endHours":24.68088125712244,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:54","end":"07:29","startHours":5.901918183895126,"endHours":7.4907376541827775,"quality":"inauspicious"},{"name":"Udveg","start":"07:29","end":"09:05","startHours":7.4907376541827775,"endHours":9.07955712447043,"quality":"inauspicious"},{"name":"Chala","start":"09:05","end":"10:40","startHours":9.07955712447043,"endHours":10.66837659475808,"quality":"neutral"},{"name":"Labha","start":"10:40","end":"12:15","startHours":10.66837659475808,"endHours":12.257196065045733,"quality":"auspicious"},{"name":"Amṛta","start":"12:15","end":"13:51","startHours":12.257196065045733,"endHours":13.846015535333382,"quality":"auspicious"},{"name":"Kāla","start":"13:51","end":"15:26","startHours":13.846015535333382,"endHours":15.434835005621036,"quality":"inauspicious"},{"name":"Śubha","start":"15:26","end":"17:01","startHours":15.434835005621036,"endHours":17.023654475908685,"quality":"auspicious"},{"name":"Roga","start":"17:01","end":"18:37","startHours":17.023654475908685,"endHours":18.61247394619634,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:37","end":"20:01","startHours":18.61247394619634,"endHours":20.023654475908685,"quality":"inauspicious"},{"name":"Śubha","start":"20:01","end":"21:26","startHours":20.023654475908685,"endHours":21.434835005621036,"quality":"auspicious"},{"name":"Roga","start":"21:26","end":"22:51","startHours":21.434835005621036,"endHours":22.846015535333386,"quality":"inauspicious"},{"name":"Udveg","start":"22:51","end":"00:15","startHours":22.846015535333386,"endHours":24.257196065045733,"quality":"inauspicious"},{"name":"Chala","start":"00:15","end":"01:40","startHours":24.257196065045733,"endHours":25.66837659475808,"quality":"neutral"},{"name":"Labha","start":"01:40","end":"03:05","startHours":25.66837659475808,"endHours":27.07955712447043,"quality":"auspicious"},{"name":"Amṛta","start":"03:05","end":"04:29","startHours":27.07955712447043,"endHours":28.49073765418278,"quality":"auspicious"},{"name":"Kāla","start":"04:29","end":"05:54","startHours":28.49073765418278,"endHours":29.901918183895127,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:54","end":"06:54","startHours":5.901918183895126,"endHours":6.901918183895126,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:54","end":"07:54","startHours":6.901918183895126,"endHours":7.901918183895126,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:54","end":"08:54","startHours":7.901918183895126,"endHours":8.901918183895127,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:54","end":"09:54","startHours":8.901918183895127,"endHours":9.901918183895127,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:54","end":"10:54","startHours":9.901918183895127,"endHours":10.901918183895127,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:54","end":"11:54","startHours":10.901918183895127,"endHours":11.901918183895127,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:54","end":"12:54","startHours":11.901918183895127,"endHours":12.901918183895127,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:54","end":"13:54","startHours":12.901918183895127,"endHours":13.901918183895127,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:54","end":"14:54","startHours":13.901918183895127,"endHours":14.901918183895127,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:54","end":"15:54","startHours":14.901918183895127,"endHours":15.901918183895127,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:54","end":"16:54","startHours":15.901918183895127,"endHours":16.901918183895127,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:54","end":"17:54","startHours":16.901918183895127,"endHours":17.901918183895127,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:54","end":"18:54","startHours":17.901918183895127,"endHours":18.901918183895127,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:54","end":"19:54","startHours":18.901918183895127,"endHours":19.901918183895127,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:54","end":"20:54","startHours":19.901918183895127,"endHours":20.901918183895127,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:54","end":"21:54","startHours":20.901918183895127,"endHours":21.901918183895127,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:54","end":"22:54","startHours":21.901918183895127,"endHours":22.901918183895127,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:54","end":"23:54","startHours":22.901918183895127,"endHours":23.901918183895127,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:54","end":"00:54","startHours":23.901918183895127,"endHours":24.901918183895127,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:54","end":"01:54","startHours":24.901918183895127,"endHours":25.901918183895127,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:54","end":"02:54","startHours":25.901918183895127,"endHours":26.901918183895127,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:54","end":"03:54","startHours":26.901918183895127,"endHours":27.901918183895127,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:54","end":"04:54","startHours":27.901918183895127,"endHours":28.901918183895127,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:54","end":"05:54","startHours":28.901918183895127,"endHours":29.901918183895127,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"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":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":7.46654465162378,"eotMinutes":1.4978360972560227,"ayanamsa":23.5691}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","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":"Bhādrapada Śukla Trayodaśī · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"festivals":[{"id":"onam","name":"Onam (Vāmana / King Bali)","name_sanskrit":"ओणम् (वामन-बलि स्मरण)","tradition":"Regional","associated_deity":"Vāmana + King Bali","significance":"Kerala festival; King Bali's annual return to Kerala. Aligned with Thiru-Onam (Śravaṇa nakshatra in Bhādrapada).","vrata":false,"detection":{"nakshatra_name":"Śravaṇa","lunar_month":"Bhādrapada"},"precedence":2},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 September 4, 1979 CE · Ṛṣikeśa · Vidhyamitra","description":"September 4, 1979 CE for Ṛṣikeśa: Śukla Trayodaśī, sūryodaya 05:54, sūryāsta 18:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1979-09-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1979-09-04","sa":"https://sa.vidhyamitra.com/city/rishikesh/1979-09-04","hi":"https://hi.vidhyamitra.com/city/rishikesh/1979-09-04","x-default":"https://vidhyamitra.com/city/rishikesh/1979-09-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:32:23.201Z","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":"2026-05-31T06:32:23.201Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:32:23.201Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}