{"id":"vidhyamitra:city-day:rishikesh:1966-04-10:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1966-04-10","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1966-04-10","date_display":"April 10, 1966 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":1966,"month":4,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439225.770833,"kali_year":5067,"ahargana":1850760.2708,"sun":{"sidereal_longitude":356.5729,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":234.7214,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":238.1485,"elapsed_within_tithi_degrees":10.1485},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3,"moon_longitude":234.7214,"elapsed_within_degrees":8.0547},"yoga":{"number":18,"name":"Varīyān","sum_longitude":231.2943},"karana":{"half_tithi_index":39,"name":"Taitila"},"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":1966,"month":4,"day":10,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2439225.770833,"ahargana":1850760.2708,"kali_year":5067,"ayanamsa_lahiri":23.3818,"grahas":{"sun":{"sidereal_longitude":356.348695,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":235.47669500000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false,"latitude":-1.3075},"mars":{"sidereal_longitude":1.2747949999999832,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":331.37129500000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":62.83379500000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":310.456995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":330.778095,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":37.8144,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":217.8144,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":1966,"month":4,"day":10,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439225.770833,"kali_year":5067,"ahargana":1850760.2708,"sun":{"sidereal_longitude":356.5729,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":234.7214,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":238.1485,"elapsed_within_tithi_degrees":10.1485},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3,"moon_longitude":234.7214,"elapsed_within_degrees":8.0547},"yoga":{"number":18,"name":"Varīyān","sum_longitude":231.2943},"karana":{"half_tithi_index":39,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.307,"elongation":121.852},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.307,"opposition_distance":58.148}},"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":"18:40","solarNoonLocal":"12:19","dayLengthHours":12.730377781733198,"dayLengthDisplay":"12 Hours 43 Mins 49 Secs","nightLengthDisplay":"11 Hours 16 Mins 11 Secs","moonriseLocal":"23:09","moonsetLocal":"09:21","rahuKala":{"name":"Rāhu Kāla","start":"17:05","end":"18:40","startHours":17.08283592756937,"endHours":18.674133150286018,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:19","end":"13:54","startHours":12.30894425941942,"endHours":13.900241482136067,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:29","end":"17:05","startHours":15.491538704852719,"endHours":17.08283592756937,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:20","startHours":8.914176850957233,"endHours":9.338522777015006,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:28","end":"06:49","startHours":6.474187776125036,"endHours":6.813664516971254,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:44","startHours":11.884598333361646,"endHours":12.733290185477193,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:06","startHours":4.246371664321726,"endHours":5.095063516437273,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:53","end":"05:57","startHours":4.882890553408386,"endHours":5.94375536855282,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:17","startHours":14.430673889708284,"endHours":15.279365741823831,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:28","end":"18:52","startHours":18.47413315028602,"endHours":18.874133150286017,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:40","end":"19:12","startHours":18.674133150286018,"endHours":19.204565557858235,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:25","end":"20:10","startHours":18.424133150286018,"endHours":20.174133150286018,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:44","startHours":23.884598333361648,"endHours":24.73329018547719,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:57","end":"07:32","startHours":5.94375536855282,"endHours":7.535052591269469,"quality":"inauspicious"},{"name":"Chala","start":"07:32","end":"09:08","startHours":7.535052591269469,"endHours":9.126349813986119,"quality":"neutral"},{"name":"Labha","start":"09:08","end":"10:43","startHours":9.126349813986119,"endHours":10.717647036702768,"quality":"auspicious"},{"name":"Amṛta","start":"10:43","end":"12:19","startHours":10.717647036702768,"endHours":12.30894425941942,"quality":"auspicious"},{"name":"Kāla","start":"12:19","end":"13:54","startHours":12.30894425941942,"endHours":13.900241482136067,"quality":"inauspicious"},{"name":"Śubha","start":"13:54","end":"15:29","startHours":13.900241482136067,"endHours":15.491538704852719,"quality":"auspicious"},{"name":"Roga","start":"15:29","end":"17:05","startHours":15.491538704852719,"endHours":17.08283592756937,"quality":"inauspicious"},{"name":"Udveg","start":"17:05","end":"18:40","startHours":17.08283592756937,"endHours":18.674133150286018,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:40","end":"20:05","startHours":18.674133150286018,"endHours":20.082835927569366,"quality":"auspicious"},{"name":"Roga","start":"20:05","end":"21:29","startHours":20.082835927569366,"endHours":21.49153870485272,"quality":"inauspicious"},{"name":"Udveg","start":"21:29","end":"22:54","startHours":21.49153870485272,"endHours":22.900241482136067,"quality":"inauspicious"},{"name":"Chala","start":"22:54","end":"00:19","startHours":22.900241482136067,"endHours":24.30894425941942,"quality":"neutral"},{"name":"Labha","start":"00:19","end":"01:43","startHours":24.30894425941942,"endHours":25.71764703670277,"quality":"auspicious"},{"name":"Amṛta","start":"01:43","end":"03:08","startHours":25.71764703670277,"endHours":27.126349813986117,"quality":"auspicious"},{"name":"Kāla","start":"03:08","end":"04:32","startHours":27.126349813986117,"endHours":28.53505259126947,"quality":"inauspicious"},{"name":"Śubha","start":"04:32","end":"05:57","startHours":28.53505259126947,"endHours":29.94375536855282,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:57","end":"06:57","startHours":5.94375536855282,"endHours":6.94375536855282,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:57","end":"07:57","startHours":6.94375536855282,"endHours":7.94375536855282,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:57","end":"08:57","startHours":7.94375536855282,"endHours":8.94375536855282,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:57","end":"09:57","startHours":8.94375536855282,"endHours":9.94375536855282,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:57","end":"10:57","startHours":9.94375536855282,"endHours":10.94375536855282,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:57","end":"11:57","startHours":10.94375536855282,"endHours":11.94375536855282,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:57","end":"12:57","startHours":11.94375536855282,"endHours":12.94375536855282,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:57","end":"13:57","startHours":12.94375536855282,"endHours":13.94375536855282,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:57","end":"14:57","startHours":13.94375536855282,"endHours":14.94375536855282,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:57","end":"15:57","startHours":14.94375536855282,"endHours":15.94375536855282,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:57","end":"16:57","startHours":15.94375536855282,"endHours":16.94375536855282,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:57","end":"17:57","startHours":16.94375536855282,"endHours":17.94375536855282,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:57","end":"18:57","startHours":17.94375536855282,"endHours":18.94375536855282,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:57","end":"19:57","startHours":18.94375536855282,"endHours":19.94375536855282,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:57","end":"20:57","startHours":19.94375536855282,"endHours":20.94375536855282,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:57","end":"21:57","startHours":20.94375536855282,"endHours":21.94375536855282,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:57","end":"22:57","startHours":21.94375536855282,"endHours":22.94375536855282,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:57","end":"23:57","startHours":22.94375536855282,"endHours":23.94375536855282,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:57","end":"00:57","startHours":23.94375536855282,"endHours":24.94375536855282,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:57","end":"01:57","startHours":24.94375536855282,"endHours":25.94375536855282,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:57","end":"02:57","startHours":25.94375536855282,"endHours":26.94375536855282,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:57","end":"03:57","startHours":26.94375536855282,"endHours":27.94375536855282,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:57","end":"04:57","startHours":27.94375536855282,"endHours":28.94375536855282,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:57","end":"05:57","startHours":28.94375536855282,"endHours":29.94375536855282,"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"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":7.716583469944305,"eotMinutes":-1.6070555651651,"ayanamsa":23.3818}},"calendars":{"vikram_samvat":2023,"vikram_samvatsara":"Siddhārthī","saka_samvat":1888,"saka_samvatsara":"Parābhava","bengali_samvat":1373,"malayalam_era":1142,"nanakshahi_year":497,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Pañcamī · Vikram 2023 Siddhārthī · Śaka 1888 Parābhava"},"festivals":[],"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}]},"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 10, 1966 CE · Ṛṣikeśa · Vidhyamitra","description":"April 10, 1966 CE for Ṛṣikeśa: Kṛṣṇa Pañcamī, sūryodaya 05:57, sūryāsta 18:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1966-04-10","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1966-04-10","sa":"https://sa.vidhyamitra.com/city/rishikesh/1966-04-10","hi":"https://hi.vidhyamitra.com/city/rishikesh/1966-04-10","x-default":"https://vidhyamitra.com/city/rishikesh/1966-04-10"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T10:29:50.877Z","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":"2026-05-31T10:29:50.877Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T10:29:50.877Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}