{"id":"vidhyamitra:city-day:rishikesh:1920-05-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1920-05-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1920-05-15","date_display":"May 15, 1920 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":1920,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422459.770833,"kali_year":5022,"ahargana":1833994.2708,"sun":{"sidereal_longitude":31.3175,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":348.7453,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":317.4278,"elapsed_within_tithi_degrees":5.4278},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.7453,"elapsed_within_degrees":2.0786},"yoga":{"number":2,"name":"Prīti","sum_longitude":20.0628},"karana":{"half_tithi_index":52,"name":"Kaulava"},"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":1920,"month":5,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2422459.770833,"ahargana":1833994.2708,"kali_year":5022,"ayanamsa_lahiri":22.7406,"grahas":{"sun":{"sidereal_longitude":31.15318000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":347.37748,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":false,"latitude":2.7322},"mars":{"sidereal_longitude":181.49198,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":true},"mercury":{"sidereal_longitude":19.47198000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":108.29308000000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":18.81407999999999,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":132.51588000000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":206.1577,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":26.1577,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","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":1920,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2422459.770833,"kali_year":5022,"ahargana":1833994.2708,"sun":{"sidereal_longitude":31.3175,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":348.7453,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":27,"name":"Dvādaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvādaśī","elongation_degrees":317.4278,"elapsed_within_tithi_degrees":5.4278},"nakshatra":{"number":27,"name":"Revatī","pada":1,"moon_longitude":348.7453,"elapsed_within_degrees":2.0786},"yoga":{"number":2,"name":"Prīti","sum_longitude":20.0628},"karana":{"half_tithi_index":52,"name":"Kaulava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.732,"elongation":42.572},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.732,"opposition_distance":137.428}},"eclipse_window_40days":[{"offset_days":-12,"type":"lunar","occurs":true,"moon_latitude":-0.46,"opposition_distance":1.139}]},"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":"19:03","solarNoonLocal":"12:13","dayLengthHours":13.650280005835066,"dayLengthDisplay":"13 Hours 39 Mins 01 Secs","nightLengthDisplay":"10 Hours 20 Mins 59 Secs","moonriseLocal":"03:06","moonsetLocal":"15:30","rahuKala":{"name":"Rāhu Kāla","start":"08:48","end":"10:31","startHours":8.806986649609133,"endHours":10.513271650338517,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:56","end":"15:38","startHours":13.925841651797283,"endHours":15.632126652526667,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:24","end":"07:06","startHours":5.394416648150367,"endHours":7.10070164887975,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:35","end":"09:02","startHours":8.579481982845216,"endHours":9.034491316373051,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:58","end":"06:20","startHours":5.963178315060161,"endHours":6.32718578188243,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:40","startHours":11.764547317540064,"endHours":12.674565984595734,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:34","end":"04:29","startHours":3.5743793140390245,"endHours":4.484397981094696,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:15","end":"05:24","startHours":4.256893314330778,"endHours":5.394416648150367,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:30","end":"15:24","startHours":14.494603318707076,"endHours":15.404621985762747,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:51","end":"19:15","startHours":18.844696653985434,"endHours":19.244696653985432,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:03","end":"19:37","startHours":19.044696653985433,"endHours":19.613458320895226,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:48","end":"20:33","startHours":18.794696653985433,"endHours":20.544696653985433,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:40","startHours":23.76454731754006,"endHours":24.674565984595734,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:24","end":"07:06","startHours":5.394416648150367,"endHours":7.10070164887975,"quality":"inauspicious"},{"name":"Śubha","start":"07:06","end":"08:48","startHours":7.10070164887975,"endHours":8.806986649609133,"quality":"auspicious"},{"name":"Roga","start":"08:48","end":"10:31","startHours":8.806986649609133,"endHours":10.513271650338517,"quality":"inauspicious"},{"name":"Udveg","start":"10:31","end":"12:13","startHours":10.513271650338517,"endHours":12.2195566510679,"quality":"inauspicious"},{"name":"Chala","start":"12:13","end":"13:56","startHours":12.2195566510679,"endHours":13.925841651797283,"quality":"neutral"},{"name":"Labha","start":"13:56","end":"15:38","startHours":13.925841651797283,"endHours":15.632126652526667,"quality":"auspicious"},{"name":"Amṛta","start":"15:38","end":"17:20","startHours":15.632126652526667,"endHours":17.33841165325605,"quality":"auspicious"},{"name":"Kāla","start":"17:20","end":"19:03","startHours":17.33841165325605,"endHours":19.044696653985433,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"19:03","end":"20:20","startHours":19.044696653985433,"endHours":20.33841165325605,"quality":"auspicious"},{"name":"Amṛta","start":"20:20","end":"21:38","startHours":20.33841165325605,"endHours":21.632126652526665,"quality":"auspicious"},{"name":"Kāla","start":"21:38","end":"22:56","startHours":21.632126652526665,"endHours":22.925841651797285,"quality":"inauspicious"},{"name":"Śubha","start":"22:56","end":"00:13","startHours":22.925841651797285,"endHours":24.2195566510679,"quality":"auspicious"},{"name":"Roga","start":"00:13","end":"01:31","startHours":24.2195566510679,"endHours":25.513271650338517,"quality":"inauspicious"},{"name":"Udveg","start":"01:31","end":"02:48","startHours":25.513271650338517,"endHours":26.806986649609133,"quality":"inauspicious"},{"name":"Chala","start":"02:48","end":"04:06","startHours":26.806986649609133,"endHours":28.10070164887975,"quality":"neutral"},{"name":"Labha","start":"04:06","end":"05:24","startHours":28.10070164887975,"endHours":29.39441664815037,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.394416648150367,"endHours":6.394416648150367,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.394416648150367,"endHours":7.394416648150367,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.394416648150367,"endHours":8.394416648150367,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.394416648150367,"endHours":9.394416648150367,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.394416648150367,"endHours":10.394416648150367,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.394416648150367,"endHours":11.394416648150367,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.394416648150367,"endHours":12.394416648150367,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.394416648150367,"endHours":13.394416648150367,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.394416648150367,"endHours":14.394416648150367,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.394416648150367,"endHours":15.394416648150367,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.394416648150367,"endHours":16.39441664815037,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.39441664815037,"endHours":17.39441664815037,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.39441664815037,"endHours":18.39441664815037,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.39441664815037,"endHours":19.39441664815037,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.39441664815037,"endHours":20.39441664815037,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.39441664815037,"endHours":21.39441664815037,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.39441664815037,"endHours":22.39441664815037,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.39441664815037,"endHours":23.39441664815037,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.39441664815037,"endHours":24.39441664815037,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.39441664815037,"endHours":25.39441664815037,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.39441664815037,"endHours":26.39441664815037,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.39441664815037,"endHours":27.39441664815037,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.39441664815037,"endHours":28.39441664815037,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.39441664815037,"endHours":29.39441664815037,"planetary_lord":"Mercury"}],"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":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":18.743882734364274,"eotMinutes":3.7562009359260493,"ayanamsa":22.7406}},"calendars":{"vikram_samvat":1977,"vikram_samvatsara":"Śrīmukha","saka_samvat":1842,"saka_samvatsara":"Raudra","bengali_samvat":1327,"malayalam_era":1096,"nanakshahi_year":451,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Kṛṣṇa Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Kṛṣṇa Dvādaśī · Vikram 1977 Śrīmukha · Śaka 1842 Raudra"},"festivals":[{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5}],"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 May 15, 1920 CE · Ṛṣikeśa · Vidhyamitra","description":"May 15, 1920 CE for Ṛṣikeśa: Kṛṣṇa Dvādaśī, sūryodaya 05:24, sūryāsta 19:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1920-05-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1920-05-15","sa":"https://sa.vidhyamitra.com/city/rishikesh/1920-05-15","hi":"https://hi.vidhyamitra.com/city/rishikesh/1920-05-15","x-default":"https://vidhyamitra.com/city/rishikesh/1920-05-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-23T04:13:32.876Z","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":"2026-05-23T04:13:32.876Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-23T04:13:32.876Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}