{"id":"vidhyamitra:city-day:rishikesh:1956-02-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1956-02-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1956-02-13","date_display":"February 13, 1956 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":1956,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435516.770833,"kali_year":5057,"ahargana":1847051.2708,"sun":{"sidereal_longitude":300.2599,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":313.8537,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":13.5938,"elapsed_within_tithi_degrees":1.5938},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":313.8537,"elapsed_within_degrees":7.187},"yoga":{"number":20,"name":"Śiva","sum_longitude":254.1135},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1956,"month":2,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2435516.770833,"ahargana":1847051.2708,"kali_year":5057,"ayanamsa_lahiri":23.24,"grahas":{"sun":{"sidereal_longitude":300.070507,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":313.023407,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":4.4248},"mars":{"sidereal_longitude":237.03500699999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":276.0424069999999,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":123.56550700000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":339.415407,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":219.27140699999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":234.335,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":54.335,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1},"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":1956,"month":2,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2435516.770833,"kali_year":5057,"ahargana":1847051.2708,"sun":{"sidereal_longitude":300.2599,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":313.8537,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":13.5938,"elapsed_within_tithi_degrees":1.5938},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":313.8537,"elapsed_within_degrees":7.187},"yoga":{"number":20,"name":"Śiva","sum_longitude":254.1135},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.425,"elongation":13.594},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.425,"opposition_distance":166.406}},"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":"07:00","sunsetLocal":"18:03","solarNoonLocal":"12:32","dayLengthHours":11.046851729388413,"dayLengthDisplay":"11 Hours 02 Mins 49 Secs","nightLengthDisplay":"12 Hours 57 Mins 11 Secs","moonriseLocal":"07:42","moonsetLocal":"19:05","rahuKala":{"name":"Rāhu Kāla","start":"08:23","end":"09:46","startHours":8.382916022489715,"endHours":9.763772488663268,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:09","end":"12:32","startHours":11.144628954836818,"endHours":12.52548542101037,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:54","end":"15:17","startHours":13.906341887183922,"endHours":15.287198353357473,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:35","end":"09:57","startHours":9.579658293173459,"endHours":9.947886684153074,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:28","end":"07:45","startHours":7.462345045040681,"endHours":7.756927757824372,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:54","startHours":12.157257030030756,"endHours":12.893713811989983,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:32","end":"06:16","startHours":5.529145992397709,"endHours":6.265602774356936,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:05","end":"07:00","startHours":6.08148857886713,"endHours":7.002059556316164,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:22","end":"15:06","startHours":14.36662737590844,"endHours":15.103084157867666,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:51","end":"18:15","startHours":17.848911285704578,"endHours":18.248911285704576,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:03","end":"18:31","startHours":18.048911285704577,"endHours":18.509196774429093,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:48","end":"19:33","startHours":17.798911285704577,"endHours":19.548911285704577,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:54","startHours":24.157257030030756,"endHours":24.893713811989983,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:00","end":"08:23","startHours":7.002059556316164,"endHours":8.382916022489715,"quality":"auspicious"},{"name":"Kāla","start":"08:23","end":"09:46","startHours":8.382916022489715,"endHours":9.763772488663268,"quality":"inauspicious"},{"name":"Śubha","start":"09:46","end":"11:09","startHours":9.763772488663268,"endHours":11.144628954836818,"quality":"auspicious"},{"name":"Roga","start":"11:09","end":"12:32","startHours":11.144628954836818,"endHours":12.52548542101037,"quality":"inauspicious"},{"name":"Udveg","start":"12:32","end":"13:54","startHours":12.52548542101037,"endHours":13.906341887183922,"quality":"inauspicious"},{"name":"Chala","start":"13:54","end":"15:17","startHours":13.906341887183922,"endHours":15.287198353357473,"quality":"neutral"},{"name":"Labha","start":"15:17","end":"16:40","startHours":15.287198353357473,"endHours":16.668054819531026,"quality":"auspicious"},{"name":"Amṛta","start":"16:40","end":"18:03","startHours":16.668054819531026,"endHours":18.048911285704577,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:03","end":"19:40","startHours":18.048911285704577,"endHours":19.668054819531026,"quality":"neutral"},{"name":"Labha","start":"19:40","end":"21:17","startHours":19.668054819531026,"endHours":21.287198353357475,"quality":"auspicious"},{"name":"Amṛta","start":"21:17","end":"22:54","startHours":21.287198353357475,"endHours":22.90634188718392,"quality":"auspicious"},{"name":"Kāla","start":"22:54","end":"00:32","startHours":22.90634188718392,"endHours":24.52548542101037,"quality":"inauspicious"},{"name":"Śubha","start":"00:32","end":"02:09","startHours":24.52548542101037,"endHours":26.14462895483682,"quality":"auspicious"},{"name":"Roga","start":"02:09","end":"03:46","startHours":26.14462895483682,"endHours":27.763772488663268,"quality":"inauspicious"},{"name":"Udveg","start":"03:46","end":"05:23","startHours":27.763772488663268,"endHours":29.382916022489717,"quality":"inauspicious"},{"name":"Chala","start":"05:23","end":"07:00","startHours":29.382916022489717,"endHours":31.002059556316162,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:00","end":"08:00","startHours":7.002059556316164,"endHours":8.002059556316164,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:00","end":"09:00","startHours":8.002059556316164,"endHours":9.002059556316164,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:00","end":"10:00","startHours":9.002059556316164,"endHours":10.002059556316164,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:00","end":"11:00","startHours":10.002059556316164,"endHours":11.002059556316164,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:00","end":"12:00","startHours":11.002059556316164,"endHours":12.002059556316164,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:00","end":"13:00","startHours":12.002059556316164,"endHours":13.002059556316164,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:00","end":"14:00","startHours":13.002059556316164,"endHours":14.002059556316164,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:00","end":"15:00","startHours":14.002059556316164,"endHours":15.002059556316164,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:00","end":"16:00","startHours":15.002059556316164,"endHours":16.002059556316162,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:00","end":"17:00","startHours":16.002059556316162,"endHours":17.002059556316162,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:00","end":"18:00","startHours":17.002059556316162,"endHours":18.002059556316162,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:00","end":"19:00","startHours":18.002059556316162,"endHours":19.002059556316162,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:00","end":"20:00","startHours":19.002059556316162,"endHours":20.002059556316162,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:00","end":"21:00","startHours":20.002059556316162,"endHours":21.002059556316162,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:00","end":"22:00","startHours":21.002059556316162,"endHours":22.002059556316162,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:00","end":"23:00","startHours":22.002059556316162,"endHours":23.002059556316162,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:00","end":"00:00","startHours":23.002059556316162,"endHours":24.002059556316162,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:00","end":"01:00","startHours":24.002059556316162,"endHours":25.002059556316162,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:00","end":"02:00","startHours":25.002059556316162,"endHours":26.002059556316162,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:00","end":"03:00","startHours":26.002059556316162,"endHours":27.002059556316162,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:00","end":"04:00","startHours":27.002059556316162,"endHours":28.002059556316162,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:00","end":"05:00","startHours":28.002059556316162,"endHours":29.002059556316162,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:00","end":"06:00","startHours":29.002059556316162,"endHours":30.002059556316162,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:00","end":"07:00","startHours":30.002059556316162,"endHours":31.002059556316162,"planetary_lord":"Venus"}],"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","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-13.747082869182005,"eotMinutes":-14.599525260622107,"ayanamsa":23.24}},"calendars":{"vikram_samvat":2013,"vikram_samvatsara":"Saumya","saka_samvat":1878,"saka_samvatsara":"Durmukhi","bengali_samvat":1363,"malayalam_era":1132,"nanakshahi_year":487,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Dvitīyā · Vikram 2013 Saumya · Śaka 1878 Durmukhi"},"festivals":[{"id":"kumbha-sankranti","name":"Kumbha Saṅkrānti","name_sanskrit":"कुम्भ सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aquarius; Kumbha-māsa begins.","vrata":false,"detection":{"sun_rashi_ingress":"Kumbha"},"precedence":5}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 February 13, 1956 CE · Ṛṣikeśa · Vidhyamitra","description":"February 13, 1956 CE for Ṛṣikeśa: Śukla Dvitīyā, sūryodaya 07:00, sūryāsta 18:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1956-02-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1956-02-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/1956-02-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/1956-02-13","x-default":"https://vidhyamitra.com/city/rishikesh/1956-02-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T15:12:17.971Z","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":"2026-05-31T15:12:17.971Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T15:12:17.971Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}