{"id":"vidhyamitra:city-day:rishikesh:2031-04-19:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/2031-04-19","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2031-04-19","date_display":"April 19, 2031 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":2031,"month":4,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462975.770833,"kali_year":5133,"ahargana":1874510.2708,"sun":{"sidereal_longitude":4.5586,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":332.8812,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.3226,"elapsed_within_tithi_degrees":4.3226},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":332.8812,"elapsed_within_degrees":12.8812},"yoga":{"number":26,"name":"Indra","sum_longitude":337.4397},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2031,"month":4,"day":19,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462975.770833,"ahargana":1874510.2708,"kali_year":5133,"ayanamsa_lahiri":24.2902,"grahas":{"sun":{"sidereal_longitude":4.514170999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":332.26687100000004,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false,"latitude":4.1275},"mars":{"sidereal_longitude":204.10837100000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":343.200771,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":244.69347100000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"venus":{"sidereal_longitude":44.86797100000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":42.368671000000006,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":219.4251,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":39.4251,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2031,"month":4,"day":19,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462975.770833,"kali_year":5133,"ahargana":1874510.2708,"sun":{"sidereal_longitude":4.5586,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":332.8812,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":328.3226,"elapsed_within_tithi_degrees":4.3226},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4,"moon_longitude":332.8812,"elapsed_within_degrees":12.8812},"yoga":{"number":26,"name":"Indra","sum_longitude":337.4397},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.127,"elongation":31.677},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.127,"opposition_distance":148.323}},"eclipse_window_40days":[{"offset_days":18,"type":"lunar","occurs":true,"moon_latitude":-1.488,"opposition_distance":2.834}]},"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":"05:46","sunsetLocal":"18:46","solarNoonLocal":"12:16","dayLengthHours":12.997830076837253,"dayLengthDisplay":"12 Hours 59 Mins 52 Secs","nightLengthDisplay":"11 Hours 00 Mins 08 Secs","moonriseLocal":"04:08","moonsetLocal":"16:07","rahuKala":{"name":"Rāhu Kāla","start":"09:01","end":"10:39","startHours":9.020360207547544,"endHours":10.645088967152201,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:54","end":"15:31","startHours":13.894546486361516,"endHours":15.51927524596617,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:46","end":"07:24","startHours":5.770902688338231,"endHours":7.395631447942888,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:48","end":"09:14","startHours":8.803729706266925,"endHours":9.236990708828166,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:19","end":"06:40","startHours":6.3124789415397835,"endHours":6.659087743588777,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:50","end":"12:42","startHours":11.836556724195617,"endHours":12.7030787293181,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:02","end":"04:54","startHours":4.037858678093264,"endHours":4.904380683215748,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:41","end":"05:46","startHours":4.687750181935127,"endHours":5.770902688338231,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:18","startHours":14.436122739563068,"endHours":15.302644744685551,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:34","end":"18:58","startHours":18.568732765175486,"endHours":18.968732765175485,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:46","end":"19:19","startHours":18.768732765175486,"endHours":19.310309018377037,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:31","end":"20:16","startHours":18.518732765175486,"endHours":20.268732765175486,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:50","end":"00:42","startHours":23.836556724195617,"endHours":24.7030787293181,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:46","end":"07:24","startHours":5.770902688338231,"endHours":7.395631447942888,"quality":"inauspicious"},{"name":"Śubha","start":"07:24","end":"09:01","startHours":7.395631447942888,"endHours":9.020360207547544,"quality":"auspicious"},{"name":"Roga","start":"09:01","end":"10:39","startHours":9.020360207547544,"endHours":10.645088967152201,"quality":"inauspicious"},{"name":"Udveg","start":"10:39","end":"12:16","startHours":10.645088967152201,"endHours":12.269817726756859,"quality":"inauspicious"},{"name":"Chala","start":"12:16","end":"13:54","startHours":12.269817726756859,"endHours":13.894546486361516,"quality":"neutral"},{"name":"Labha","start":"13:54","end":"15:31","startHours":13.894546486361516,"endHours":15.51927524596617,"quality":"auspicious"},{"name":"Amṛta","start":"15:31","end":"17:09","startHours":15.51927524596617,"endHours":17.144004005570828,"quality":"auspicious"},{"name":"Kāla","start":"17:09","end":"18:46","startHours":17.144004005570828,"endHours":18.768732765175486,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:46","end":"20:09","startHours":18.768732765175486,"endHours":20.144004005570828,"quality":"auspicious"},{"name":"Amṛta","start":"20:09","end":"21:31","startHours":20.144004005570828,"endHours":21.51927524596617,"quality":"auspicious"},{"name":"Kāla","start":"21:31","end":"22:54","startHours":21.51927524596617,"endHours":22.894546486361516,"quality":"inauspicious"},{"name":"Śubha","start":"22:54","end":"00:16","startHours":22.894546486361516,"endHours":24.26981772675686,"quality":"auspicious"},{"name":"Roga","start":"00:16","end":"01:39","startHours":24.26981772675686,"endHours":25.6450889671522,"quality":"inauspicious"},{"name":"Udveg","start":"01:39","end":"03:01","startHours":25.6450889671522,"endHours":27.020360207547547,"quality":"inauspicious"},{"name":"Chala","start":"03:01","end":"04:24","startHours":27.020360207547547,"endHours":28.39563144794289,"quality":"neutral"},{"name":"Labha","start":"04:24","end":"05:46","startHours":28.39563144794289,"endHours":29.770902688338232,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:46","end":"06:46","startHours":5.770902688338231,"endHours":6.770902688338231,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:46","end":"07:46","startHours":6.770902688338231,"endHours":7.770902688338231,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:46","end":"08:46","startHours":7.770902688338231,"endHours":8.770902688338232,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:46","end":"09:46","startHours":8.770902688338232,"endHours":9.770902688338232,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:46","end":"10:46","startHours":9.770902688338232,"endHours":10.770902688338232,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:46","end":"11:46","startHours":10.770902688338232,"endHours":11.770902688338232,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:46","end":"12:46","startHours":11.770902688338232,"endHours":12.770902688338232,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:46","end":"13:46","startHours":12.770902688338232,"endHours":13.770902688338232,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:46","end":"14:46","startHours":13.770902688338232,"endHours":14.770902688338232,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:46","end":"15:46","startHours":14.770902688338232,"endHours":15.770902688338232,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:46","end":"16:46","startHours":15.770902688338232,"endHours":16.770902688338232,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:46","end":"17:46","startHours":16.770902688338232,"endHours":17.770902688338232,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:46","end":"18:46","startHours":17.770902688338232,"endHours":18.770902688338232,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:46","end":"19:46","startHours":18.770902688338232,"endHours":19.770902688338232,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:46","end":"20:46","startHours":19.770902688338232,"endHours":20.770902688338232,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:46","end":"21:46","startHours":20.770902688338232,"endHours":21.770902688338232,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:46","end":"22:46","startHours":21.770902688338232,"endHours":22.770902688338232,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:46","end":"23:46","startHours":22.770902688338232,"endHours":23.770902688338232,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:46","end":"00:46","startHours":23.770902688338232,"endHours":24.770902688338232,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:46","end":"01:46","startHours":24.770902688338232,"endHours":25.770902688338232,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:46","end":"02:46","startHours":25.770902688338232,"endHours":26.770902688338232,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:46","end":"03:46","startHours":26.770902688338232,"endHours":27.770902688338232,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:46","end":"04:46","startHours":27.770902688338232,"endHours":28.770902688338232,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:46","end":"05:46","startHours":28.770902688338232,"endHours":29.770902688338232,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":11.048255036777066,"eotMinutes":0.740536394588492,"ayanamsa":24.2902}},"calendars":{"vikram_samvat":2088,"vikram_samvatsara":"Raktākṣī","saka_samvat":1953,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1438,"malayalam_era":1207,"nanakshahi_year":562,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Trayodaśī · Vikram 2088 Raktākṣī · Śaka 1953 Virodhakṛt"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — 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 19, 2031 CE · Ṛṣikeśa · Vidhyamitra","description":"April 19, 2031 CE for Ṛṣikeśa: Kṛṣṇa Trayodaśī, sūryodaya 05:46, sūryāsta 18:46.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/2031-04-19","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/2031-04-19","sa":"https://sa.vidhyamitra.com/city/rishikesh/2031-04-19","hi":"https://hi.vidhyamitra.com/city/rishikesh/2031-04-19","x-default":"https://vidhyamitra.com/city/rishikesh/2031-04-19"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T15:59:57.173Z","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":"2026-05-15T15:59:57.173Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T15:59:57.173Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}