{"id":"vidhyamitra:city-day:rishikesh:1979-04-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1979-04-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1979-04-27","date_display":"April 27, 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":4,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443990.770833,"kali_year":5081,"ahargana":1855525.2708,"sun":{"sidereal_longitude":12.7669,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":20.8641,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.0972,"elapsed_within_tithi_degrees":8.0972},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":20.8641,"elapsed_within_degrees":7.5308},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":33.631},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":4,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443990.770833,"ahargana":1855525.2708,"kali_year":5081,"ayanamsa_lahiri":23.5641,"grahas":{"sun":{"sidereal_longitude":12.637436999999977,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":18.957836999999984,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":-3.7083},"mars":{"sidereal_longitude":352.153237,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":346.262337,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":96.72533699999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"venus":{"sidereal_longitude":341.430937,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":133.50773700000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":145.3417,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":325.3417,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva 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":1979,"month":4,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443990.770833,"kali_year":5081,"ahargana":1855525.2708,"sun":{"sidereal_longitude":12.7669,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":20.8641,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":8.0972,"elapsed_within_tithi_degrees":8.0972},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":20.8641,"elapsed_within_degrees":7.5308},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":33.631},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.708,"elongation":8.097},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.708,"opposition_distance":171.903}},"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":"05:38","sunsetLocal":"18:51","solarNoonLocal":"12:15","dayLengthHours":13.206738111307587,"dayLengthDisplay":"13 Hours 12 Mins 24 Secs","nightLengthDisplay":"10 Hours 47 Mins 36 Secs","moonriseLocal":"06:00","moonsetLocal":"19:20","rahuKala":{"name":"Rāhu Kāla","start":"10:36","end":"12:15","startHours":10.592449921926416,"endHours":12.243292185839863,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:33","end":"17:12","startHours":15.54497671366676,"endHours":17.19581897758021,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:17","end":"08:56","startHours":7.290765394099519,"endHours":8.941607658012966,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:43","end":"09:10","startHours":8.72149535615784,"endHours":9.161719959868094,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:11","end":"06:33","startHours":6.1902038848238865,"endHours":6.542383567792089,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:41","startHours":11.80306758212961,"endHours":12.683516789550115,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:53","end":"04:46","startHours":3.879024715345059,"endHours":4.759473922765564,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:38","startHours":4.539361620910438,"endHours":5.63992313018607,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:19","startHours":14.444415204391127,"endHours":15.324864411811634,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:39","end":"19:03","startHours":18.646661241493657,"endHours":19.046661241493656,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:51","end":"19:24","startHours":18.846661241493656,"endHours":19.396941996131474,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:36","end":"20:21","startHours":18.596661241493656,"endHours":20.346661241493656,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:41","startHours":23.80306758212961,"endHours":24.683516789550115,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:38","end":"07:17","startHours":5.63992313018607,"endHours":7.290765394099519,"quality":"neutral"},{"name":"Labha","start":"07:17","end":"08:56","startHours":7.290765394099519,"endHours":8.941607658012966,"quality":"auspicious"},{"name":"Amṛta","start":"08:56","end":"10:36","startHours":8.941607658012966,"endHours":10.592449921926416,"quality":"auspicious"},{"name":"Kāla","start":"10:36","end":"12:15","startHours":10.592449921926416,"endHours":12.243292185839863,"quality":"inauspicious"},{"name":"Śubha","start":"12:15","end":"13:54","startHours":12.243292185839863,"endHours":13.894134449753313,"quality":"auspicious"},{"name":"Roga","start":"13:54","end":"15:33","startHours":13.894134449753313,"endHours":15.54497671366676,"quality":"inauspicious"},{"name":"Udveg","start":"15:33","end":"17:12","startHours":15.54497671366676,"endHours":17.19581897758021,"quality":"inauspicious"},{"name":"Chala","start":"17:12","end":"18:51","startHours":17.19581897758021,"endHours":18.846661241493656,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:51","end":"20:12","startHours":18.846661241493656,"endHours":20.19581897758021,"quality":"inauspicious"},{"name":"Udveg","start":"20:12","end":"21:33","startHours":20.19581897758021,"endHours":21.54497671366676,"quality":"inauspicious"},{"name":"Chala","start":"21:33","end":"22:54","startHours":21.54497671366676,"endHours":22.89413444975331,"quality":"neutral"},{"name":"Labha","start":"22:54","end":"00:15","startHours":22.89413444975331,"endHours":24.243292185839863,"quality":"auspicious"},{"name":"Amṛta","start":"00:15","end":"01:36","startHours":24.243292185839863,"endHours":25.592449921926416,"quality":"auspicious"},{"name":"Kāla","start":"01:36","end":"02:56","startHours":25.592449921926416,"endHours":26.941607658012966,"quality":"inauspicious"},{"name":"Śubha","start":"02:56","end":"04:17","startHours":26.941607658012966,"endHours":28.290765394099516,"quality":"auspicious"},{"name":"Roga","start":"04:17","end":"05:38","startHours":28.290765394099516,"endHours":29.63992313018607,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:38","end":"06:38","startHours":5.63992313018607,"endHours":6.63992313018607,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:38","end":"07:38","startHours":6.63992313018607,"endHours":7.63992313018607,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:38","end":"08:38","startHours":7.63992313018607,"endHours":8.63992313018607,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:38","end":"09:38","startHours":8.63992313018607,"endHours":9.63992313018607,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:38","end":"10:38","startHours":9.63992313018607,"endHours":10.63992313018607,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:38","end":"11:38","startHours":10.63992313018607,"endHours":11.63992313018607,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:38","end":"12:38","startHours":11.63992313018607,"endHours":12.63992313018607,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:38","end":"13:38","startHours":12.63992313018607,"endHours":13.63992313018607,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:38","end":"14:38","startHours":13.63992313018607,"endHours":14.63992313018607,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:38","end":"15:38","startHours":14.63992313018607,"endHours":15.63992313018607,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:38","end":"16:38","startHours":15.63992313018607,"endHours":16.63992313018607,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:38","end":"17:38","startHours":16.63992313018607,"endHours":17.63992313018607,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:38","end":"18:38","startHours":17.63992313018607,"endHours":18.63992313018607,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:38","end":"19:38","startHours":18.63992313018607,"endHours":19.63992313018607,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:38","end":"20:38","startHours":19.63992313018607,"endHours":20.63992313018607,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:38","end":"21:38","startHours":20.63992313018607,"endHours":21.63992313018607,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:38","end":"22:38","startHours":21.63992313018607,"endHours":22.63992313018607,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:38","end":"23:38","startHours":22.63992313018607,"endHours":23.63992313018607,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:38","end":"00:38","startHours":23.63992313018607,"endHours":24.63992313018607,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:38","end":"01:38","startHours":24.63992313018607,"endHours":25.63992313018607,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:38","end":"02:38","startHours":25.63992313018607,"endHours":26.63992313018607,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:38","end":"03:38","startHours":26.63992313018607,"endHours":27.63992313018607,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:38","end":"04:38","startHours":27.63992313018607,"endHours":28.63992313018607,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:38","end":"05:38","startHours":28.63992313018607,"endHours":29.63992313018607,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.586415227398625,"eotMinutes":2.332068849608316,"ayanamsa":23.5641}},"calendars":{"vikram_samvat":2036,"vikram_samvatsara":"Aṅgirasa","saka_samvat":1901,"saka_samvatsara":"Siddhārthī","bengali_samvat":1386,"malayalam_era":1155,"nanakshahi_year":510,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Pratipada · Vikram 2036 Aṅgirasa · Śaka 1901 Siddhārthī"},"festivals":[],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 April 27, 1979 CE · Ṛṣikeśa · Vidhyamitra","description":"April 27, 1979 CE for Ṛṣikeśa: Śukla Pratipada, sūryodaya 05:38, sūryāsta 18:51.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1979-04-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1979-04-27","sa":"https://sa.vidhyamitra.com/city/rishikesh/1979-04-27","hi":"https://hi.vidhyamitra.com/city/rishikesh/1979-04-27","x-default":"https://vidhyamitra.com/city/rishikesh/1979-04-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T03:39:03.340Z","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":"2026-05-31T03:39:03.340Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T03:39:03.340Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}