{"id":"vidhyamitra:city-day:rishikesh:1978-07-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1978-07-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1978-07-15","date_display":"July 15, 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":7,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443704.770833,"kali_year":5080,"ahargana":1855239.2708,"sun":{"sidereal_longitude":88.2864,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":201.5117,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":113.2253,"elapsed_within_tithi_degrees":5.2253},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":201.5117,"elapsed_within_degrees":1.5117},"yoga":{"number":22,"name":"Sādhya","sum_longitude":289.798},"karana":{"half_tithi_index":18,"name":"Taitila"},"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":1978,"month":7,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443704.770833,"ahargana":1855239.2708,"kali_year":5080,"ayanamsa_lahiri":23.5531,"grahas":{"sun":{"sidereal_longitude":88.664265,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":198.49476500000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false,"latitude":2.9515},"mars":{"sidereal_longitude":144.37766499999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":114.82206500000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":85.043565,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"venus":{"sidereal_longitude":130.09436500000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":124.99516500000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":160.4954,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":340.4954,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":1978,"month":7,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443704.770833,"kali_year":5080,"ahargana":1855239.2708,"sun":{"sidereal_longitude":88.2864,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":201.5117,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":113.2253,"elapsed_within_tithi_degrees":5.2253},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":201.5117,"elapsed_within_degrees":1.5117},"yoga":{"number":22,"name":"Sādhya","sum_longitude":289.798},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.951,"elongation":113.225},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.951,"opposition_distance":66.775}},"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":"05:25","sunsetLocal":"19:20","solarNoonLocal":"12:23","dayLengthHours":13.910763916729548,"dayLengthDisplay":"13 Hours 54 Mins 39 Secs","nightLengthDisplay":"10 Hours 05 Mins 21 Secs","moonriseLocal":"14:16","moonsetLocal":"01:08","rahuKala":{"name":"Rāhu Kāla","start":"08:54","end":"10:38","startHours":8.897529205923865,"endHours":10.636374695515059,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:07","end":"15:51","startHours":14.114065674697445,"endHours":15.852911164288638,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:25","end":"07:10","startHours":5.4198382267414775,"endHours":7.158683716332671,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:40","end":"09:08","startHours":8.665683140645038,"endHours":9.12937527120269,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:00","end":"06:22","startHours":5.999453389938542,"endHours":6.370407094384663,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:50","startHours":11.911528054548599,"endHours":12.838912315663903,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:34","end":"04:30","startHours":3.5650697045108712,"endHours":4.492453965626174,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:16","end":"05:25","startHours":4.260607900347349,"endHours":5.4198382267414775,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:42","end":"15:37","startHours":14.69368083789451,"endHours":15.621065099009813,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:08","end":"19:32","startHours":19.130602143471027,"endHours":19.530602143471025,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:20","end":"19:55","startHours":19.330602143471026,"endHours":19.91021730666809,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:05","end":"20:50","startHours":19.080602143471026,"endHours":20.830602143471026,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:50","startHours":23.9115280545486,"endHours":24.8389123156639,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:25","end":"07:10","startHours":5.4198382267414775,"endHours":7.158683716332671,"quality":"inauspicious"},{"name":"Śubha","start":"07:10","end":"08:54","startHours":7.158683716332671,"endHours":8.897529205923865,"quality":"auspicious"},{"name":"Roga","start":"08:54","end":"10:38","startHours":8.897529205923865,"endHours":10.636374695515059,"quality":"inauspicious"},{"name":"Udveg","start":"10:38","end":"12:23","startHours":10.636374695515059,"endHours":12.37522018510625,"quality":"inauspicious"},{"name":"Chala","start":"12:23","end":"14:07","startHours":12.37522018510625,"endHours":14.114065674697445,"quality":"neutral"},{"name":"Labha","start":"14:07","end":"15:51","startHours":14.114065674697445,"endHours":15.852911164288638,"quality":"auspicious"},{"name":"Amṛta","start":"15:51","end":"17:36","startHours":15.852911164288638,"endHours":17.591756653879834,"quality":"auspicious"},{"name":"Kāla","start":"17:36","end":"19:20","startHours":17.591756653879834,"endHours":19.330602143471026,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:20","end":"20:36","startHours":19.330602143471026,"endHours":20.591756653879834,"quality":"auspicious"},{"name":"Amṛta","start":"20:36","end":"21:51","startHours":20.591756653879834,"endHours":21.85291116428864,"quality":"auspicious"},{"name":"Kāla","start":"21:51","end":"23:07","startHours":21.85291116428864,"endHours":23.114065674697446,"quality":"inauspicious"},{"name":"Śubha","start":"23:07","end":"00:23","startHours":23.114065674697446,"endHours":24.37522018510625,"quality":"auspicious"},{"name":"Roga","start":"00:23","end":"01:38","startHours":24.37522018510625,"endHours":25.63637469551506,"quality":"inauspicious"},{"name":"Udveg","start":"01:38","end":"02:54","startHours":25.63637469551506,"endHours":26.897529205923867,"quality":"inauspicious"},{"name":"Chala","start":"02:54","end":"04:10","startHours":26.897529205923867,"endHours":28.15868371633267,"quality":"neutral"},{"name":"Labha","start":"04:10","end":"05:25","startHours":28.15868371633267,"endHours":29.419838226741476,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:25","end":"06:25","startHours":5.4198382267414775,"endHours":6.4198382267414775,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:25","end":"07:25","startHours":6.4198382267414775,"endHours":7.4198382267414775,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:25","end":"08:25","startHours":7.4198382267414775,"endHours":8.419838226741478,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:25","end":"09:25","startHours":8.419838226741478,"endHours":9.419838226741478,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:25","end":"10:25","startHours":9.419838226741478,"endHours":10.419838226741478,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:25","end":"11:25","startHours":10.419838226741478,"endHours":11.419838226741478,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:25","end":"12:25","startHours":11.419838226741478,"endHours":12.419838226741478,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:25","end":"13:25","startHours":12.419838226741478,"endHours":13.419838226741478,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:25","end":"14:25","startHours":13.419838226741478,"endHours":14.419838226741478,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:25","end":"15:25","startHours":14.419838226741478,"endHours":15.419838226741478,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:25","end":"16:25","startHours":15.419838226741478,"endHours":16.419838226741476,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:25","end":"17:25","startHours":16.419838226741476,"endHours":17.419838226741476,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:25","end":"18:25","startHours":17.419838226741476,"endHours":18.419838226741476,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:25","end":"19:25","startHours":18.419838226741476,"endHours":19.419838226741476,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:25","end":"20:25","startHours":19.419838226741476,"endHours":20.419838226741476,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:25","end":"21:25","startHours":20.419838226741476,"endHours":21.419838226741476,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:25","end":"22:25","startHours":21.419838226741476,"endHours":22.419838226741476,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:25","end":"23:25","startHours":22.419838226741476,"endHours":23.419838226741476,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:25","end":"00:25","startHours":23.419838226741476,"endHours":24.419838226741476,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:25","end":"01:25","startHours":24.419838226741476,"endHours":25.419838226741476,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:25","end":"02:25","startHours":25.419838226741476,"endHours":26.419838226741476,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:25","end":"03:25","startHours":26.419838226741476,"endHours":27.419838226741476,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:25","end":"04:25","startHours":27.419838226741476,"endHours":28.419838226741476,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:25","end":"05:25","startHours":28.419838226741476,"endHours":29.419838226741476,"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":"Grīṣma (Summer) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":21.604848015489814,"eotMinutes":-5.583611106375076,"ayanamsa":23.5531}},"calendars":{"vikram_samvat":2035,"vikram_samvatsara":"Prajāpati","saka_samvat":1900,"saka_samvatsara":"Kālayukta","bengali_samvat":1385,"malayalam_era":1154,"nanakshahi_year":509,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Daśamī · Vikram 2035 Prajāpati · Śaka 1900 Kālayukta"},"festivals":[{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi":"Mithuna"},"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":[{"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 July 15, 1978 CE · Ṛṣikeśa · Vidhyamitra","description":"July 15, 1978 CE for Ṛṣikeśa: Śukla Daśamī, sūryodaya 05:25, sūryāsta 19:20.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1978-07-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1978-07-15","sa":"https://sa.vidhyamitra.com/city/rishikesh/1978-07-15","hi":"https://hi.vidhyamitra.com/city/rishikesh/1978-07-15","x-default":"https://vidhyamitra.com/city/rishikesh/1978-07-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T23:32:44.892Z","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":"2026-05-18T23:32:44.892Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T23:32:44.892Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}