{"id":"vidhyamitra:city-day:rishikesh:1958-04-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1958-04-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1958-04-06","date_display":"April 6, 1958 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":1958,"month":4,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436299.770833,"kali_year":5059,"ahargana":1847834.2708,"sun":{"sidereal_longitude":352.7208,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":197.9496,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":205.2288,"elapsed_within_tithi_degrees":1.2288},"nakshatra":{"number":15,"name":"Svātī","pada":4,"moon_longitude":197.9496,"elapsed_within_degrees":11.283},"yoga":{"number":15,"name":"Vajra","sum_longitude":190.6704},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"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":1958,"month":4,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2436299.770833,"ahargana":1847834.2708,"kali_year":5059,"ayanamsa_lahiri":23.2699,"grahas":{"sun":{"sidereal_longitude":352.46759,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":199.06278999999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false,"latitude":0.3997},"mars":{"sidereal_longitude":291.83169,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":8.327690000000018,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":185.25349000000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":306.69349,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":242.90749000000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":192.8479,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":12.8479,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":1958,"month":4,"day":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436299.770833,"kali_year":5059,"ahargana":1847834.2708,"sun":{"sidereal_longitude":352.7208,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":197.9496,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":18,"name":"Tṛtīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Tṛtīyā","elongation_degrees":205.2288,"elapsed_within_tithi_degrees":1.2288},"nakshatra":{"number":15,"name":"Svātī","pada":4,"moon_longitude":197.9496,"elapsed_within_degrees":11.283},"yoga":{"number":15,"name":"Vajra","sum_longitude":190.6704},"karana":{"half_tithi_index":34,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.4,"elongation":154.771},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.4,"opposition_distance":25.229}},"eclipse_window_40days":[{"offset_days":13,"type":"solar","occurs":true,"moon_latitude":0.569,"elongation":0.542}]},"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":"06:01","sunsetLocal":"18:38","solarNoonLocal":"12:20","dayLengthHours":12.610035239668797,"dayLengthDisplay":"12 Hours 36 Mins 36 Secs","nightLengthDisplay":"11 Hours 23 Mins 24 Secs","moonriseLocal":"20:40","moonsetLocal":"07:32","rahuKala":{"name":"Rāhu Kāla","start":"17:03","end":"18:38","startHours":17.057420369859848,"endHours":18.63367477481845,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:20","end":"13:54","startHours":12.32865715498405,"endHours":13.90491155994265,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:29","end":"17:03","startHours":15.481165964901251,"endHours":17.057420369859848,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:58","end":"09:23","startHours":8.965981091072372,"endHours":9.386315599061332,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:33","end":"06:53","startHours":6.549057670135853,"endHours":6.885325276527021,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:45","startHours":11.90832264699509,"endHours":12.74899166297301,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:21","end":"05:11","startHours":4.342301503193813,"endHours":5.182970519171733,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:58","end":"06:01","startHours":4.972803265177253,"endHours":6.023639535149653,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:16","startHours":14.43032969492885,"endHours":15.27099871090677,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:26","end":"18:50","startHours":18.43367477481845,"endHours":18.833674774818448,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:38","end":"19:10","startHours":18.63367477481845,"endHours":19.15909290980465,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:23","end":"20:08","startHours":18.38367477481845,"endHours":20.13367477481845,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:45","startHours":23.90832264699509,"endHours":24.748991662973012,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:01","end":"07:36","startHours":6.023639535149653,"endHours":7.599893940108252,"quality":"inauspicious"},{"name":"Chala","start":"07:36","end":"09:11","startHours":7.599893940108252,"endHours":9.176148345066853,"quality":"neutral"},{"name":"Labha","start":"09:11","end":"10:45","startHours":9.176148345066853,"endHours":10.752402750025452,"quality":"auspicious"},{"name":"Amṛta","start":"10:45","end":"12:20","startHours":10.752402750025452,"endHours":12.32865715498405,"quality":"auspicious"},{"name":"Kāla","start":"12:20","end":"13:54","startHours":12.32865715498405,"endHours":13.90491155994265,"quality":"inauspicious"},{"name":"Śubha","start":"13:54","end":"15:29","startHours":13.90491155994265,"endHours":15.481165964901251,"quality":"auspicious"},{"name":"Roga","start":"15:29","end":"17:03","startHours":15.481165964901251,"endHours":17.057420369859848,"quality":"inauspicious"},{"name":"Udveg","start":"17:03","end":"18:38","startHours":17.057420369859848,"endHours":18.63367477481845,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:38","end":"20:03","startHours":18.63367477481845,"endHours":20.057420369859848,"quality":"auspicious"},{"name":"Roga","start":"20:03","end":"21:29","startHours":20.057420369859848,"endHours":21.48116596490125,"quality":"inauspicious"},{"name":"Udveg","start":"21:29","end":"22:54","startHours":21.48116596490125,"endHours":22.90491155994265,"quality":"inauspicious"},{"name":"Chala","start":"22:54","end":"00:20","startHours":22.90491155994265,"endHours":24.32865715498405,"quality":"neutral"},{"name":"Labha","start":"00:20","end":"01:45","startHours":24.32865715498405,"endHours":25.75240275002545,"quality":"auspicious"},{"name":"Amṛta","start":"01:45","end":"03:11","startHours":25.75240275002545,"endHours":27.17614834506685,"quality":"auspicious"},{"name":"Kāla","start":"03:11","end":"04:36","startHours":27.17614834506685,"endHours":28.599893940108252,"quality":"inauspicious"},{"name":"Śubha","start":"04:36","end":"06:01","startHours":28.599893940108252,"endHours":30.023639535149652,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.023639535149653,"endHours":7.023639535149653,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.023639535149653,"endHours":8.023639535149652,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.023639535149652,"endHours":9.023639535149652,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.023639535149652,"endHours":10.023639535149652,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.023639535149652,"endHours":11.023639535149652,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.023639535149652,"endHours":12.023639535149652,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.023639535149652,"endHours":13.023639535149652,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.023639535149652,"endHours":14.023639535149652,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.023639535149652,"endHours":15.023639535149652,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.023639535149652,"endHours":16.023639535149652,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.023639535149652,"endHours":17.023639535149652,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.023639535149652,"endHours":18.023639535149652,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.023639535149652,"endHours":19.023639535149652,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.023639535149652,"endHours":20.023639535149652,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.023639535149652,"endHours":21.023639535149652,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.023639535149652,"endHours":22.023639535149652,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.023639535149652,"endHours":23.023639535149652,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.023639535149652,"endHours":24.023639535149652,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.023639535149652,"endHours":25.023639535149652,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.023639535149652,"endHours":26.023639535149652,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.023639535149652,"endHours":27.023639535149652,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.023639535149652,"endHours":28.023639535149652,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.023639535149652,"endHours":29.023639535149652,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.023639535149652,"endHours":30.023639535149652,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":6.192953803071499,"eotMinutes":-2.7898292990430456,"ayanamsa":23.2699}},"calendars":{"vikram_samvat":2015,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1880,"saka_samvatsara":"Vilambī","bengali_samvat":1365,"malayalam_era":1134,"nanakshahi_year":489,"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 Tṛtīyā · Vikram 2015 Virodhakṛt · Śaka 1880 Vilambī"},"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":[]},"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 6, 1958 CE · Ṛṣikeśa · Vidhyamitra","description":"April 6, 1958 CE for Ṛṣikeśa: Kṛṣṇa Tṛtīyā, sūryodaya 06:01, sūryāsta 18:38.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1958-04-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1958-04-06","sa":"https://sa.vidhyamitra.com/city/rishikesh/1958-04-06","hi":"https://hi.vidhyamitra.com/city/rishikesh/1958-04-06","x-default":"https://vidhyamitra.com/city/rishikesh/1958-04-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T01:43:59.156Z","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":"2026-05-31T01:43:59.156Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T01:43:59.156Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}