{"id":"vidhyamitra:city-day:rishikesh:1958-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1958-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1958-07-13","date_display":"July 13, 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":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436397.770833,"kali_year":5060,"ahargana":1847932.2708,"sun":{"sidereal_longitude":86.5581,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":40.9925,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":314.4344,"elapsed_within_tithi_degrees":2.4344},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.9925,"elapsed_within_degrees":0.9925},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":127.5506},"karana":{"half_tithi_index":52,"name":"Kaulava"},"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":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2436397.770833,"ahargana":1847932.2708,"kali_year":5060,"ayanamsa_lahiri":23.2737,"grahas":{"sun":{"sidereal_longitude":86.87544600000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":41.53464600000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false,"latitude":-2.4713},"mars":{"sidereal_longitude":1.9654459999999858,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":110.57084599999996,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":179.750446,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":56.339946,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":237.65834599999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":187.6554,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":7.6554,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":1958,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2436397.770833,"kali_year":5060,"ahargana":1847932.2708,"sun":{"sidereal_longitude":86.5581,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":40.9925,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":314.4344,"elapsed_within_tithi_degrees":2.4344},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":40.9925,"elapsed_within_degrees":0.9925},"yoga":{"number":10,"name":"Gaṇḍa","sum_longitude":127.5506},"karana":{"half_tithi_index":52,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.471,"elongation":45.566},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.471,"opposition_distance":134.434}},"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":"05:24","sunsetLocal":"19:21","solarNoonLocal":"12:22","dayLengthHours":13.940682556722983,"dayLengthDisplay":"13 Hours 56 Mins 26 Secs","nightLengthDisplay":"10 Hours 03 Mins 34 Secs","moonriseLocal":"02:26","moonsetLocal":"16:16","rahuKala":{"name":"Rāhu Kāla","start":"17:36","end":"19:21","startHours":17.599273106207132,"endHours":19.341858425797504,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:22","end":"14:07","startHours":12.371517147436013,"endHours":14.114102467026385,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:51","end":"17:36","startHours":15.856687786616758,"endHours":17.599273106207132,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:07","startHours":8.654001798976552,"endHours":9.118691217533984,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.982037642271312,"endHours":6.353789177117258,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:50","startHours":11.90682772887858,"endHours":12.836206565993445,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:28","startHours":3.5424181948447897,"endHours":4.471797031959656,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:14","end":"05:24","startHours":4.239452322680939,"endHours":5.401175869074521,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:42","end":"15:37","startHours":14.694964240223177,"endHours":15.624343077338043,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:09","end":"19:33","startHours":19.141858425797505,"endHours":19.541858425797503,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:21","end":"19:55","startHours":19.341858425797504,"endHours":19.922720198994295,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:06","end":"20:51","startHours":19.091858425797504,"endHours":20.841858425797504,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:50","startHours":23.90682772887858,"endHours":24.836206565993447,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:24","end":"07:09","startHours":5.401175869074521,"endHours":7.143761188664894,"quality":"inauspicious"},{"name":"Chala","start":"07:09","end":"08:53","startHours":7.143761188664894,"endHours":8.886346508255267,"quality":"neutral"},{"name":"Labha","start":"08:53","end":"10:38","startHours":8.886346508255267,"endHours":10.62893182784564,"quality":"auspicious"},{"name":"Amṛta","start":"10:38","end":"12:22","startHours":10.62893182784564,"endHours":12.371517147436013,"quality":"auspicious"},{"name":"Kāla","start":"12:22","end":"14:07","startHours":12.371517147436013,"endHours":14.114102467026385,"quality":"inauspicious"},{"name":"Śubha","start":"14:07","end":"15:51","startHours":14.114102467026385,"endHours":15.856687786616758,"quality":"auspicious"},{"name":"Roga","start":"15:51","end":"17:36","startHours":15.856687786616758,"endHours":17.599273106207132,"quality":"inauspicious"},{"name":"Udveg","start":"17:36","end":"19:21","startHours":17.599273106207132,"endHours":19.341858425797504,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:21","end":"20:36","startHours":19.341858425797504,"endHours":20.599273106207132,"quality":"auspicious"},{"name":"Roga","start":"20:36","end":"21:51","startHours":20.599273106207132,"endHours":21.85668778661676,"quality":"inauspicious"},{"name":"Udveg","start":"21:51","end":"23:07","startHours":21.85668778661676,"endHours":23.114102467026385,"quality":"inauspicious"},{"name":"Chala","start":"23:07","end":"00:22","startHours":23.114102467026385,"endHours":24.371517147436013,"quality":"neutral"},{"name":"Labha","start":"00:22","end":"01:38","startHours":24.371517147436013,"endHours":25.62893182784564,"quality":"auspicious"},{"name":"Amṛta","start":"01:38","end":"02:53","startHours":25.62893182784564,"endHours":26.886346508255265,"quality":"auspicious"},{"name":"Kāla","start":"02:53","end":"04:09","startHours":26.886346508255265,"endHours":28.143761188664893,"quality":"inauspicious"},{"name":"Śubha","start":"04:09","end":"05:24","startHours":28.143761188664893,"endHours":29.40117586907452,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.401175869074521,"endHours":6.401175869074521,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.401175869074521,"endHours":7.401175869074521,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.401175869074521,"endHours":8.401175869074521,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.401175869074521,"endHours":9.401175869074521,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.401175869074521,"endHours":10.401175869074521,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.401175869074521,"endHours":11.401175869074521,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.401175869074521,"endHours":12.401175869074521,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.401175869074521,"endHours":13.401175869074521,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.401175869074521,"endHours":14.401175869074521,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.401175869074521,"endHours":15.401175869074521,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.401175869074521,"endHours":16.40117586907452,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.40117586907452,"endHours":17.40117586907452,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.40117586907452,"endHours":18.40117586907452,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.40117586907452,"endHours":19.40117586907452,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.40117586907452,"endHours":20.40117586907452,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.40117586907452,"endHours":21.40117586907452,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.40117586907452,"endHours":22.40117586907452,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.40117586907452,"endHours":23.40117586907452,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.40117586907452,"endHours":24.40117586907452,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.40117586907452,"endHours":25.40117586907452,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.40117586907452,"endHours":26.40117586907452,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.40117586907452,"endHours":27.40117586907452,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.40117586907452,"endHours":28.40117586907452,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.40117586907452,"endHours":29.40117586907452,"planetary_lord":"Jupiter"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Prajāpati","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":21.924894770732163,"eotMinutes":-5.361428846160681,"ayanamsa":23.2737}},"calendars":{"vikram_samvat":2015,"vikram_samvatsara":"Virodhakṛt","saka_samvat":1880,"saka_samvatsara":"Vilambī","bengali_samvat":1365,"malayalam_era":1134,"nanakshahi_year":489,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Kṛṣṇa Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Kṛṣṇa Dvādaśī · Vikram 2015 Virodhakṛt · Śaka 1880 Vilambī"},"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":"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":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","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 13, 1958 CE · Ṛṣikeśa · Vidhyamitra","description":"July 13, 1958 CE for Ṛṣikeśa: Kṛṣṇa Dvādaśī, sūryodaya 05:24, sūryāsta 19:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1958-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1958-07-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/1958-07-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/1958-07-13","x-default":"https://vidhyamitra.com/city/rishikesh/1958-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T10:02:25.233Z","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":"2026-05-20T10:02:25.233Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T10:02:25.233Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}