{"id":"vidhyamitra:city-day:rishikesh:1938-05-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1938-05-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1938-05-13","date_display":"May 13, 1938 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":1938,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2429031.770833,"kali_year":5040,"ahargana":1840566.2708,"sun":{"sidereal_longitude":28.7701,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":194.4906,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.7206,"elapsed_within_tithi_degrees":9.7206},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":194.4906,"elapsed_within_degrees":7.824},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":223.2607},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1938,"month":5,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2429031.770833,"ahargana":1840566.2708,"kali_year":5040,"ayanamsa_lahiri":22.992,"grahas":{"sun":{"sidereal_longitude":28.63238100000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":193.780481,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false,"latitude":-1.7893},"mars":{"sidereal_longitude":51.078981,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":5.2222810000000095,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":307.582181,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":53.813781000000006,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":350.757181,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":217.9415,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":37.9415,"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":1938,"month":5,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2429031.770833,"kali_year":5040,"ahargana":1840566.2708,"sun":{"sidereal_longitude":28.7701,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":194.4906,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.7206,"elapsed_within_tithi_degrees":9.7206},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":194.4906,"elapsed_within_degrees":7.824},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":223.2607},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.789,"elongation":165.721},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.789,"opposition_distance":14.279}},"eclipse_window_40days":[{"offset_days":1,"type":"lunar","occurs":true,"moon_latitude":-0.81,"opposition_distance":2.226}]},"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":"05:25","sunsetLocal":"19:01","solarNoonLocal":"12:13","dayLengthHours":13.59923929802989,"dayLengthDisplay":"13 Hours 35 Mins 57 Secs","nightLengthDisplay":"10 Hours 24 Mins 03 Secs","moonriseLocal":"17:44","moonsetLocal":"04:44","rahuKala":{"name":"Rāhu Kāla","start":"10:31","end":"12:13","startHours":10.51969777535366,"endHours":12.219602687607395,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:37","end":"17:19","startHours":15.619412512114867,"endHours":17.319317424368602,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:07","end":"08:49","startHours":7.119887950846186,"endHours":8.819792863099922,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:03","startHours":8.593138874799424,"endHours":9.04644685140042,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.986618009343695,"endHours":6.349264390624492,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:46","end":"12:40","startHours":11.766294711006397,"endHours":12.67291066420839,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:36","end":"04:31","startHours":3.606751132188464,"endHours":4.513367085390457,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:17","end":"05:25","startHours":4.286713097089959,"endHours":5.4199830385924495,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:24","startHours":14.486142570612376,"endHours":15.392758523814368,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:49","end":"19:13","startHours":18.81922233662234,"endHours":19.219222336622337,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:01","end":"19:35","startHours":19.019222336622338,"endHours":19.585857307373583,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:46","end":"20:31","startHours":18.769222336622338,"endHours":20.519222336622338,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:46","end":"00:40","startHours":23.766294711006395,"endHours":24.672910664208388,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:25","end":"07:07","startHours":5.4199830385924495,"endHours":7.119887950846186,"quality":"neutral"},{"name":"Labha","start":"07:07","end":"08:49","startHours":7.119887950846186,"endHours":8.819792863099922,"quality":"auspicious"},{"name":"Amṛta","start":"08:49","end":"10:31","startHours":8.819792863099922,"endHours":10.51969777535366,"quality":"auspicious"},{"name":"Kāla","start":"10:31","end":"12:13","startHours":10.51969777535366,"endHours":12.219602687607395,"quality":"inauspicious"},{"name":"Śubha","start":"12:13","end":"13:55","startHours":12.219602687607395,"endHours":13.91950759986113,"quality":"auspicious"},{"name":"Roga","start":"13:55","end":"15:37","startHours":13.91950759986113,"endHours":15.619412512114867,"quality":"inauspicious"},{"name":"Udveg","start":"15:37","end":"17:19","startHours":15.619412512114867,"endHours":17.319317424368602,"quality":"inauspicious"},{"name":"Chala","start":"17:19","end":"19:01","startHours":17.319317424368602,"endHours":19.019222336622338,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"19:01","end":"20:19","startHours":19.019222336622338,"endHours":20.319317424368602,"quality":"inauspicious"},{"name":"Udveg","start":"20:19","end":"21:37","startHours":20.319317424368602,"endHours":21.619412512114867,"quality":"inauspicious"},{"name":"Chala","start":"21:37","end":"22:55","startHours":21.619412512114867,"endHours":22.91950759986113,"quality":"neutral"},{"name":"Labha","start":"22:55","end":"00:13","startHours":22.91950759986113,"endHours":24.21960268760739,"quality":"auspicious"},{"name":"Amṛta","start":"00:13","end":"01:31","startHours":24.21960268760739,"endHours":25.519697775353656,"quality":"auspicious"},{"name":"Kāla","start":"01:31","end":"02:49","startHours":25.519697775353656,"endHours":26.81979286309992,"quality":"inauspicious"},{"name":"Śubha","start":"02:49","end":"04:07","startHours":26.81979286309992,"endHours":28.119887950846184,"quality":"auspicious"},{"name":"Roga","start":"04:07","end":"05:25","startHours":28.119887950846184,"endHours":29.41998303859245,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:25","end":"06:25","startHours":5.4199830385924495,"endHours":6.4199830385924495,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:25","end":"07:25","startHours":6.4199830385924495,"endHours":7.4199830385924495,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:25","end":"08:25","startHours":7.4199830385924495,"endHours":8.419983038592449,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:25","end":"09:25","startHours":8.419983038592449,"endHours":9.419983038592449,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:25","end":"10:25","startHours":9.419983038592449,"endHours":10.419983038592449,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:25","end":"11:25","startHours":10.419983038592449,"endHours":11.419983038592449,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:25","end":"12:25","startHours":11.419983038592449,"endHours":12.419983038592449,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:25","end":"13:25","startHours":12.419983038592449,"endHours":13.419983038592449,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:25","end":"14:25","startHours":13.419983038592449,"endHours":14.419983038592449,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:25","end":"15:25","startHours":14.419983038592449,"endHours":15.419983038592449,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:25","end":"16:25","startHours":15.419983038592449,"endHours":16.41998303859245,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:25","end":"17:25","startHours":16.41998303859245,"endHours":17.41998303859245,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:25","end":"18:25","startHours":17.41998303859245,"endHours":18.41998303859245,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:25","end":"19:25","startHours":18.41998303859245,"endHours":19.41998303859245,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:25","end":"20:25","startHours":19.41998303859245,"endHours":20.41998303859245,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:25","end":"21:25","startHours":20.41998303859245,"endHours":21.41998303859245,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:25","end":"22:25","startHours":21.41998303859245,"endHours":22.41998303859245,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:25","end":"23:25","startHours":22.41998303859245,"endHours":23.41998303859245,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:25","end":"00:25","startHours":23.41998303859245,"endHours":24.41998303859245,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:25","end":"01:25","startHours":24.41998303859245,"endHours":25.41998303859245,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:25","end":"02:25","startHours":25.41998303859245,"endHours":26.41998303859245,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:25","end":"03:25","startHours":26.41998303859245,"endHours":27.41998303859245,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:25","end":"04:25","startHours":27.41998303859245,"endHours":28.41998303859245,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:25","end":"05:25","startHours":28.41998303859245,"endHours":29.41998303859245,"planetary_lord":"Mars"}],"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"South-East","anandadiYoga":{"name":"Dhvaja","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.168067608087306,"eotMinutes":3.7534387435564067,"ayanamsa":22.992}},"calendars":{"vikram_samvat":1995,"vikram_samvatsara":"Khara","saka_samvat":1860,"saka_samvatsara":"Bahudhānya","bengali_samvat":1345,"malayalam_era":1114,"nanakshahi_year":469,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","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":"Vaiśākha Śukla Caturdaśī · Vikram 1995 Khara · Śaka 1860 Bahudhānya"},"festivals":[{"id":"narasimha-jayanti","name":"Narasiṁha Jayantī","name_sanskrit":"नरसिंह जयन्ती","tradition":"Vaishnava","associated_deity":"Narasiṁha (avatar of Krishna)","deity_avatara_index":14,"significance":"Bhagavān Narasiṁha manifested to protect the bhakta Prahlāda. Krishna's fierce protective form.","vrata":true,"primary_observance":"Sandhyā (twilight) abhiṣekam; recitation of Narasiṁha-Stotra","detection":{"tithi_number":14,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":1,"related_chart":"narasimha","sources":["Bhāgavata Purāṇa 7.8"]},{"id":"chhinnamasta-jayanti","name":"Chhinnamastā Jayantī","name_sanskrit":"छिन्नमस्ता जयन्ती","tradition":"Shakta","associated_deity":"Devī Chhinnamastā (6th of 10 Mahāvidyās)","significance":"The 6th of the Daśa Mahāvidyās. Devī's self-decapitation form representing transcendence of ego.","vrata":false,"detection":{"tithi_number":14,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":5}],"todays_walk":{"walk":{"id":"narasimha-jayanti-walk","name":"Narasiṁha Jayantī Walk","name_sanskrit":"नरसिंह जयन्ती यात्रा","type":"festival","description":"Bhāgavata 7.8 (Prahlāda-Narasiṁha) + protective verses.","step_count":9,"url":"/walk/narasimha-jayanti-walk"},"reason":"Today is Narasiṁha Jayantī — its dedicated 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 13, 1938 CE · Ṛṣikeśa · Vidhyamitra","description":"May 13, 1938 CE for Ṛṣikeśa: Śukla Caturdaśī, sūryodaya 05:25, sūryāsta 19:01.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1938-05-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1938-05-13","sa":"https://sa.vidhyamitra.com/city/rishikesh/1938-05-13","hi":"https://hi.vidhyamitra.com/city/rishikesh/1938-05-13","x-default":"https://vidhyamitra.com/city/rishikesh/1938-05-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T02:04:49.637Z","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":"2026-05-31T02:04:49.637Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T02:04:49.637Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}