{"id":"vidhyamitra:city-day:rishikesh:1916-04-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1916-04-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1916-04-13","date_display":"April 13, 1916 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":1916,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420966.770833,"kali_year":5017,"ahargana":1832501.2708,"sun":{"sidereal_longitude":0.4223,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":117.753,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":117.3307,"elapsed_within_tithi_degrees":9.3307},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4,"moon_longitude":117.753,"elapsed_within_degrees":11.0863},"yoga":{"number":9,"name":"Śūla","sum_longitude":118.1753},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1916,"month":4,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2420966.770833,"ahargana":1832501.2708,"kali_year":5017,"ayanamsa_lahiri":22.6835,"grahas":{"sun":{"sidereal_longitude":0.0948240000000169,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":116.91562399999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false,"latitude":-0.9722},"mars":{"sidereal_longitude":111.58372400000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":359.067024,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":352.340424,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"venus":{"sidereal_longitude":46.482024000000024,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":78.42682400000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":285.2641,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":105.2641,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":1916,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2420966.770833,"kali_year":5017,"ahargana":1832501.2708,"sun":{"sidereal_longitude":0.4223,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":117.753,"rashi":4,"rashi_name":"Karka"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":117.3307,"elapsed_within_tithi_degrees":9.3307},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4,"moon_longitude":117.753,"elapsed_within_degrees":11.0863},"yoga":{"number":9,"name":"Śūla","sum_longitude":118.1753},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.972,"elongation":117.331},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.972,"opposition_distance":62.669}},"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":"05:53","sunsetLocal":"18:42","solarNoonLocal":"12:18","dayLengthHours":12.821283640192448,"dayLengthDisplay":"12 Hours 49 Mins 17 Secs","nightLengthDisplay":"11 Hours 10 Mins 43 Secs","moonriseLocal":"13:27","moonsetLocal":"02:43","rahuKala":{"name":"Rāhu Kāla","start":"13:54","end":"15:30","startHours":13.897650635519131,"endHours":15.500311090543185,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:53","end":"07:29","startHours":5.8843483603988505,"endHours":7.487008815422906,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:05","end":"10:42","startHours":9.089669270446961,"endHours":10.69232972547102,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.875981209777088,"endHours":9.303357331116837,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:25","end":"06:46","startHours":6.418568512073536,"endHours":6.760469409145335,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:43","startHours":11.867614059155326,"endHours":12.722366301834821,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:10","end":"05:02","startHours":4.1748438750398575,"endHours":5.029596117719354,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:49","end":"05:53","startHours":4.81590805704948,"endHours":5.8843483603988505,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:17","startHours":14.431870787193816,"endHours":15.286623029873313,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:30","end":"18:54","startHours":18.505632000591298,"endHours":18.905632000591297,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:42","end":"19:14","startHours":18.705632000591297,"endHours":19.239852152265982,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:27","end":"20:12","startHours":18.455632000591297,"endHours":20.205632000591297,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:43","startHours":23.867614059155326,"endHours":24.72236630183482,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:53","end":"07:29","startHours":5.8843483603988505,"endHours":7.487008815422906,"quality":"auspicious"},{"name":"Roga","start":"07:29","end":"09:05","startHours":7.487008815422906,"endHours":9.089669270446961,"quality":"inauspicious"},{"name":"Udveg","start":"09:05","end":"10:42","startHours":9.089669270446961,"endHours":10.69232972547102,"quality":"inauspicious"},{"name":"Chala","start":"10:42","end":"12:18","startHours":10.69232972547102,"endHours":12.294990180495073,"quality":"neutral"},{"name":"Labha","start":"12:18","end":"13:54","startHours":12.294990180495073,"endHours":13.897650635519131,"quality":"auspicious"},{"name":"Amṛta","start":"13:54","end":"15:30","startHours":13.897650635519131,"endHours":15.500311090543185,"quality":"auspicious"},{"name":"Kāla","start":"15:30","end":"17:06","startHours":15.500311090543185,"endHours":17.102971545567243,"quality":"inauspicious"},{"name":"Śubha","start":"17:06","end":"18:42","startHours":17.102971545567243,"endHours":18.705632000591297,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:42","end":"20:06","startHours":18.705632000591297,"endHours":20.102971545567243,"quality":"auspicious"},{"name":"Kāla","start":"20:06","end":"21:30","startHours":20.102971545567243,"endHours":21.500311090543185,"quality":"inauspicious"},{"name":"Śubha","start":"21:30","end":"22:54","startHours":21.500311090543185,"endHours":22.897650635519128,"quality":"auspicious"},{"name":"Roga","start":"22:54","end":"00:18","startHours":22.897650635519128,"endHours":24.294990180495073,"quality":"inauspicious"},{"name":"Udveg","start":"00:18","end":"01:42","startHours":24.294990180495073,"endHours":25.69232972547102,"quality":"inauspicious"},{"name":"Chala","start":"01:42","end":"03:05","startHours":25.69232972547102,"endHours":27.08966927044696,"quality":"neutral"},{"name":"Labha","start":"03:05","end":"04:29","startHours":27.08966927044696,"endHours":28.487008815422904,"quality":"auspicious"},{"name":"Amṛta","start":"04:29","end":"05:53","startHours":28.487008815422904,"endHours":29.88434836039885,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:53","end":"06:53","startHours":5.8843483603988505,"endHours":6.8843483603988505,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:53","end":"07:53","startHours":6.8843483603988505,"endHours":7.8843483603988505,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:53","end":"08:53","startHours":7.8843483603988505,"endHours":8.88434836039885,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:53","end":"09:53","startHours":8.88434836039885,"endHours":9.88434836039885,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:53","end":"10:53","startHours":9.88434836039885,"endHours":10.88434836039885,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:53","end":"11:53","startHours":10.88434836039885,"endHours":11.88434836039885,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:53","end":"12:53","startHours":11.88434836039885,"endHours":12.88434836039885,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:53","end":"13:53","startHours":12.88434836039885,"endHours":13.88434836039885,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:53","end":"14:53","startHours":13.88434836039885,"endHours":14.88434836039885,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:53","end":"15:53","startHours":14.88434836039885,"endHours":15.88434836039885,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:53","end":"16:53","startHours":15.88434836039885,"endHours":16.88434836039885,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:53","end":"17:53","startHours":16.88434836039885,"endHours":17.88434836039885,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:53","end":"18:53","startHours":17.88434836039885,"endHours":18.88434836039885,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:53","end":"19:53","startHours":18.88434836039885,"endHours":19.88434836039885,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:53","end":"20:53","startHours":19.88434836039885,"endHours":20.88434836039885,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:53","end":"21:53","startHours":20.88434836039885,"endHours":21.88434836039885,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:53","end":"22:53","startHours":21.88434836039885,"endHours":22.88434836039885,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:53","end":"23:53","startHours":22.88434836039885,"endHours":23.88434836039885,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:53","end":"00:53","startHours":23.88434836039885,"endHours":24.88434836039885,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:53","end":"01:53","startHours":24.88434836039885,"endHours":25.88434836039885,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:53","end":"02:53","startHours":25.88434836039885,"endHours":26.88434836039885,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:53","end":"03:53","startHours":26.88434836039885,"endHours":27.88434836039885,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:53","end":"04:53","startHours":27.88434836039885,"endHours":28.88434836039885,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:53","end":"05:53","startHours":28.88434836039885,"endHours":29.88434836039885,"planetary_lord":"Moon"}],"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","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Rākṣasa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":8.858154973192473,"eotMinutes":-0.7698108297043191,"ayanamsa":22.6835}},"calendars":{"vikram_samvat":1973,"vikram_samvatsara":"Śukla","saka_samvat":1838,"saka_samvatsara":"Nala","bengali_samvat":1323,"malayalam_era":1092,"nanakshahi_year":447,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","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":"Caitra Śukla Daśamī · Vikram 1973 Śukla · Śaka 1838 Nala"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 13, 1916 CE · Ṛṣikeśa · Vidhyamitra","description":"April 13, 1916 CE for Ṛṣikeśa: Śukla Daśamī, sūryodaya 05:53, sūryāsta 18:42.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1916-04-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1916-04-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/1916-04-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/1916-04-13","x-default":"https://vidhyamitra.com/city/rishikesh/1916-04-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:09:55.006Z","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":"2026-05-31T14:09:55.006Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:09:55.006Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}