{"id":"vidhyamitra:city-day:rishikesh:1939-10-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1939-10-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1939-10-20","date_display":"October 20, 1939 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":1939,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2429556.770833,"kali_year":5041,"ahargana":1841091.2708,"sun":{"sidereal_longitude":182.1563,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":269.9379,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":87.7816,"elapsed_within_tithi_degrees":3.7816},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1,"moon_longitude":269.9379,"elapsed_within_degrees":3.2713},"yoga":{"number":7,"name":"Sukarma","sum_longitude":92.0942},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"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":1939,"month":10,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2429556.770833,"ahargana":1841091.2708,"kali_year":5041,"ayanamsa_lahiri":23.012,"grahas":{"sun":{"sidereal_longitude":182.73492199999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":271.70472199999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false,"latitude":4.4289},"mars":{"sidereal_longitude":289.74362199999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":201.045522,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":338.623822,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":195.24382200000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":5.385921999999994,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":190.1245,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":10.1245,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","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":1939,"month":10,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2429556.770833,"kali_year":5041,"ahargana":1841091.2708,"sun":{"sidereal_longitude":182.1563,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":269.9379,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":87.7816,"elapsed_within_tithi_degrees":3.7816},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1,"moon_longitude":269.9379,"elapsed_within_degrees":3.2713},"yoga":{"number":7,"name":"Sukarma","sum_longitude":92.0942},"karana":{"half_tithi_index":14,"name":"Viṣṭi"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.429,"elongation":87.782},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.429,"opposition_distance":92.218}},"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":"06:21","sunsetLocal":"17:42","solarNoonLocal":"12:01","dayLengthHours":11.35315548417367,"dayLengthDisplay":"11 Hours 21 Mins 11 Secs","nightLengthDisplay":"12 Hours 38 Mins 49 Secs","moonriseLocal":"12:46","moonsetLocal":"23:08","rahuKala":{"name":"Rāhu Kāla","start":"10:36","end":"12:01","startHours":10.601401043741106,"endHours":12.020545479262815,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:52","end":"16:17","startHours":14.858834350306232,"endHours":16.27797878582794,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:46","end":"09:11","startHours":7.763112172697688,"endHours":9.182256608219397,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:22","startHours":8.993037350149836,"endHours":9.371475866288957,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:49","end":"07:07","startHours":6.817015882349882,"endHours":7.11976669526118,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:24","startHours":11.642106963123693,"endHours":12.398983995401936,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:50","end":"05:35","startHours":4.8302136726194895,"endHours":5.587090704897735,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:24","end":"06:21","startHours":5.397871446828173,"endHours":6.343967737175979,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:55","end":"14:40","startHours":13.912738059958425,"endHours":14.66961509223667,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:30","end":"17:54","startHours":17.49712322134965,"endHours":17.89712322134965,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:42","end":"18:10","startHours":17.69712322134965,"endHours":18.17017136652355,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:27","end":"19:12","startHours":17.44712322134965,"endHours":19.19712322134965,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:24","startHours":23.64210696312369,"endHours":24.398983995401938,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:21","end":"07:46","startHours":6.343967737175979,"endHours":7.763112172697688,"quality":"neutral"},{"name":"Labha","start":"07:46","end":"09:11","startHours":7.763112172697688,"endHours":9.182256608219397,"quality":"auspicious"},{"name":"Amṛta","start":"09:11","end":"10:36","startHours":9.182256608219397,"endHours":10.601401043741106,"quality":"auspicious"},{"name":"Kāla","start":"10:36","end":"12:01","startHours":10.601401043741106,"endHours":12.020545479262815,"quality":"inauspicious"},{"name":"Śubha","start":"12:01","end":"13:26","startHours":12.020545479262815,"endHours":13.439689914784523,"quality":"auspicious"},{"name":"Roga","start":"13:26","end":"14:52","startHours":13.439689914784523,"endHours":14.858834350306232,"quality":"inauspicious"},{"name":"Udveg","start":"14:52","end":"16:17","startHours":14.858834350306232,"endHours":16.27797878582794,"quality":"inauspicious"},{"name":"Chala","start":"16:17","end":"17:42","startHours":16.27797878582794,"endHours":17.69712322134965,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:42","end":"19:17","startHours":17.69712322134965,"endHours":19.27797878582794,"quality":"inauspicious"},{"name":"Udveg","start":"19:17","end":"20:52","startHours":19.27797878582794,"endHours":20.858834350306232,"quality":"inauspicious"},{"name":"Chala","start":"20:52","end":"22:26","startHours":20.858834350306232,"endHours":22.439689914784523,"quality":"neutral"},{"name":"Labha","start":"22:26","end":"00:01","startHours":22.439689914784523,"endHours":24.020545479262815,"quality":"auspicious"},{"name":"Amṛta","start":"00:01","end":"01:36","startHours":24.020545479262815,"endHours":25.601401043741106,"quality":"auspicious"},{"name":"Kāla","start":"01:36","end":"03:11","startHours":25.601401043741106,"endHours":27.182256608219397,"quality":"inauspicious"},{"name":"Śubha","start":"03:11","end":"04:46","startHours":27.182256608219397,"endHours":28.76311217269769,"quality":"auspicious"},{"name":"Roga","start":"04:46","end":"06:21","startHours":28.76311217269769,"endHours":30.34396773717598,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:21","end":"07:21","startHours":6.343967737175979,"endHours":7.343967737175979,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:21","end":"08:21","startHours":7.343967737175979,"endHours":8.34396773717598,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:21","end":"09:21","startHours":8.34396773717598,"endHours":9.34396773717598,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:21","end":"10:21","startHours":9.34396773717598,"endHours":10.34396773717598,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:21","end":"11:21","startHours":10.34396773717598,"endHours":11.34396773717598,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:21","end":"12:21","startHours":11.34396773717598,"endHours":12.34396773717598,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:21","end":"13:21","startHours":12.34396773717598,"endHours":13.34396773717598,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:21","end":"14:21","startHours":13.34396773717598,"endHours":14.34396773717598,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:21","end":"15:21","startHours":14.34396773717598,"endHours":15.34396773717598,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:21","end":"16:21","startHours":15.34396773717598,"endHours":16.34396773717598,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:21","end":"17:21","startHours":16.34396773717598,"endHours":17.34396773717598,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:21","end":"18:21","startHours":17.34396773717598,"endHours":18.34396773717598,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:21","end":"19:21","startHours":18.34396773717598,"endHours":19.34396773717598,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:21","end":"20:21","startHours":19.34396773717598,"endHours":20.34396773717598,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:21","end":"21:21","startHours":20.34396773717598,"endHours":21.34396773717598,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:21","end":"22:21","startHours":21.34396773717598,"endHours":22.34396773717598,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:21","end":"23:21","startHours":22.34396773717598,"endHours":23.34396773717598,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:21","end":"00:21","startHours":23.34396773717598,"endHours":24.34396773717598,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:21","end":"01:21","startHours":24.34396773717598,"endHours":25.34396773717598,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:21","end":"02:21","startHours":25.34396773717598,"endHours":26.34396773717598,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:21","end":"03:21","startHours":26.34396773717598,"endHours":27.34396773717598,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:21","end":"04:21","startHours":27.34396773717598,"endHours":28.34396773717598,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:21","end":"05:21","startHours":28.34396773717598,"endHours":29.34396773717598,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:21","end":"06:21","startHours":29.34396773717598,"endHours":30.34396773717598,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"South-East","anandadiYoga":{"name":"Mānasa","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.949129273984909,"eotMinutes":15.696871244231174,"ayanamsa":23.012}},"calendars":{"vikram_samvat":1996,"vikram_samvatsara":"Nandana","saka_samvat":1861,"saka_samvatsara":"Pramāthi","bengali_samvat":1346,"malayalam_era":1115,"nanakshahi_year":470,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Aṣṭamī · Vikram 1996 Nandana · Śaka 1861 Pramāthi"},"festivals":[{"id":"durga-ashtami","name":"Mahā-Aṣṭamī (Durgā-Aṣṭamī)","name_sanskrit":"महाष्टमी","tradition":"Shakta","associated_deity":"Devī Durgā","significance":"8th day of Śāradīya Navrātri; Mahiṣāsura-mardinī kṣaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":1}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"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 October 20, 1939 CE · Ṛṣikeśa · Vidhyamitra","description":"October 20, 1939 CE for Ṛṣikeśa: Śukla Aṣṭamī, sūryodaya 06:21, sūryāsta 17:42.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1939-10-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1939-10-20","sa":"https://sa.vidhyamitra.com/city/rishikesh/1939-10-20","hi":"https://hi.vidhyamitra.com/city/rishikesh/1939-10-20","x-default":"https://vidhyamitra.com/city/rishikesh/1939-10-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:38:49.675Z","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":"2026-05-31T09:38:49.676Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:38:49.676Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}