{"id":"vidhyamitra:city-day:rishikesh:1963-08-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1963-08-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1963-08-31","date_display":"August 31, 1963 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":1963,"month":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438272.770833,"kali_year":5065,"ahargana":1849807.2708,"sun":{"sidereal_longitude":132.992,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":266.0018,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":133.0098,"elapsed_within_tithi_degrees":1.0098},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":266.0018,"elapsed_within_degrees":12.6685},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":38.9938},"karana":{"half_tithi_index":22,"name":"Bava"},"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":1963,"month":8,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438272.770833,"ahargana":1849807.2708,"kali_year":5065,"ayanamsa_lahiri":23.3454,"grahas":{"sun":{"sidereal_longitude":133.58650699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":266.020807,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false,"latitude":0.181},"mars":{"sidereal_longitude":179.06390699999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":160.28970700000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":356.056007,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":true},"venus":{"sidereal_longitude":134.39480700000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":295.828707,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":88.3089,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":268.3089,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"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":1963,"month":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438272.770833,"kali_year":5065,"ahargana":1849807.2708,"sun":{"sidereal_longitude":132.992,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":266.0018,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":133.0098,"elapsed_within_tithi_degrees":1.0098},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4,"moon_longitude":266.0018,"elapsed_within_degrees":12.6685},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":38.9938},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.181,"elongation":133.01},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.181,"opposition_distance":46.99}},"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":"05:52","sunsetLocal":"18:42","solarNoonLocal":"12:17","dayLengthHours":12.829876257480322,"dayLengthDisplay":"12 Hours 49 Mins 48 Secs","nightLengthDisplay":"11 Hours 10 Mins 12 Secs","moonriseLocal":"15:58","moonsetLocal":"02:15","rahuKala":{"name":"Rāhu Kāla","start":"09:04","end":"10:41","startHours":9.072264443573463,"endHours":10.675998975758503,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:53","end":"15:29","startHours":13.883468040128584,"endHours":15.487202572313624,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:52","end":"07:28","startHours":5.8647953792033825,"endHours":7.468529911388423,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:52","end":"09:17","startHours":8.858433172615458,"endHours":9.286095714531468,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:24","end":"06:44","startHours":6.399373556598396,"endHours":6.741503590131204,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:42","startHours":11.852070966027533,"endHours":12.707396049859554,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:09","end":"05:01","startHours":4.15414521153934,"endHours":5.0094702953713615,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:48","end":"05:52","startHours":4.795639024413356,"endHours":5.8647953792033825,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:25","end":"15:16","startHours":14.418046217523596,"endHours":15.273371301355617,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:30","end":"18:54","startHours":18.494671636683705,"endHours":18.894671636683704,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:42","end":"19:14","startHours":18.694671636683704,"endHours":19.229249814078717,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:27","end":"20:12","startHours":18.444671636683704,"endHours":20.194671636683704,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:42","startHours":23.852070966027533,"endHours":24.707396049859554,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:52","end":"07:28","startHours":5.8647953792033825,"endHours":7.468529911388423,"quality":"inauspicious"},{"name":"Śubha","start":"07:28","end":"09:04","startHours":7.468529911388423,"endHours":9.072264443573463,"quality":"auspicious"},{"name":"Roga","start":"09:04","end":"10:41","startHours":9.072264443573463,"endHours":10.675998975758503,"quality":"inauspicious"},{"name":"Udveg","start":"10:41","end":"12:17","startHours":10.675998975758503,"endHours":12.279733507943543,"quality":"inauspicious"},{"name":"Chala","start":"12:17","end":"13:53","startHours":12.279733507943543,"endHours":13.883468040128584,"quality":"neutral"},{"name":"Labha","start":"13:53","end":"15:29","startHours":13.883468040128584,"endHours":15.487202572313624,"quality":"auspicious"},{"name":"Amṛta","start":"15:29","end":"17:05","startHours":15.487202572313624,"endHours":17.090937104498664,"quality":"auspicious"},{"name":"Kāla","start":"17:05","end":"18:42","startHours":17.090937104498664,"endHours":18.694671636683704,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:42","end":"20:05","startHours":18.694671636683704,"endHours":20.090937104498664,"quality":"auspicious"},{"name":"Amṛta","start":"20:05","end":"21:29","startHours":20.090937104498664,"endHours":21.487202572313624,"quality":"auspicious"},{"name":"Kāla","start":"21:29","end":"22:53","startHours":21.487202572313624,"endHours":22.883468040128584,"quality":"inauspicious"},{"name":"Śubha","start":"22:53","end":"00:17","startHours":22.883468040128584,"endHours":24.279733507943543,"quality":"auspicious"},{"name":"Roga","start":"00:17","end":"01:41","startHours":24.279733507943543,"endHours":25.675998975758503,"quality":"inauspicious"},{"name":"Udveg","start":"01:41","end":"03:04","startHours":25.675998975758503,"endHours":27.072264443573463,"quality":"inauspicious"},{"name":"Chala","start":"03:04","end":"04:28","startHours":27.072264443573463,"endHours":28.468529911388423,"quality":"neutral"},{"name":"Labha","start":"04:28","end":"05:52","startHours":28.468529911388423,"endHours":29.864795379203382,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:52","end":"06:52","startHours":5.8647953792033825,"endHours":6.8647953792033825,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:52","end":"07:52","startHours":6.8647953792033825,"endHours":7.8647953792033825,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:52","end":"08:52","startHours":7.8647953792033825,"endHours":8.864795379203382,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:52","end":"09:52","startHours":8.864795379203382,"endHours":9.864795379203382,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:52","end":"10:52","startHours":9.864795379203382,"endHours":10.864795379203382,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:52","end":"11:52","startHours":10.864795379203382,"endHours":11.864795379203382,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:52","end":"12:52","startHours":11.864795379203382,"endHours":12.864795379203382,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:52","end":"13:52","startHours":12.864795379203382,"endHours":13.864795379203382,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:52","end":"14:52","startHours":13.864795379203382,"endHours":14.864795379203382,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:52","end":"15:52","startHours":14.864795379203382,"endHours":15.864795379203382,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:52","end":"16:52","startHours":15.864795379203382,"endHours":16.864795379203382,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:52","end":"17:52","startHours":16.864795379203382,"endHours":17.864795379203382,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:52","end":"18:52","startHours":17.864795379203382,"endHours":18.864795379203382,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:52","end":"19:52","startHours":18.864795379203382,"endHours":19.864795379203382,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:52","end":"20:52","startHours":19.864795379203382,"endHours":20.864795379203382,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:52","end":"21:52","startHours":20.864795379203382,"endHours":21.864795379203382,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:52","end":"22:52","startHours":21.864795379203382,"endHours":22.864795379203382,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:52","end":"23:52","startHours":22.864795379203382,"endHours":23.864795379203382,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:52","end":"00:52","startHours":23.864795379203382,"endHours":24.864795379203382,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:52","end":"01:52","startHours":24.864795379203382,"endHours":25.864795379203382,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:52","end":"02:52","startHours":25.864795379203382,"endHours":26.864795379203382,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:52","end":"03:52","startHours":26.864795379203382,"endHours":27.864795379203382,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:52","end":"04:52","startHours":27.864795379203382,"endHours":28.864795379203382,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:52","end":"05:52","startHours":28.864795379203382,"endHours":29.864795379203382,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":8.965600926324662,"eotMinutes":0.14558952338733633,"ayanamsa":23.3454}},"calendars":{"vikram_samvat":2020,"vikram_samvatsara":"Nala","saka_samvat":1885,"saka_samvatsara":"Śobhana","bengali_samvat":1370,"malayalam_era":1139,"nanakshahi_year":494,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Dvādaśī · Vikram 2020 Nala · Śaka 1885 Śobhana"},"festivals":[{"id":"vamana-jayanti","name":"Vāmana Jayantī","name_sanskrit":"वामन जयन्ती","tradition":"Vaishnava","associated_deity":"Vāmana (5th daśāvatāra of Krishna)","deity_avatara_index":15,"significance":"Vāmana's three-step measure of all worlds; Bali's surrender. (= Onam in Kerala.)","vrata":true,"detection":{"tithi_number":12,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":2,"sources":["Bhāgavata 8.18-22"]},{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"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 August 31, 1963 CE · Ṛṣikeśa · Vidhyamitra","description":"August 31, 1963 CE for Ṛṣikeśa: Śukla Dvādaśī, sūryodaya 05:52, sūryāsta 18:42.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1963-08-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1963-08-31","sa":"https://sa.vidhyamitra.com/city/rishikesh/1963-08-31","hi":"https://hi.vidhyamitra.com/city/rishikesh/1963-08-31","x-default":"https://vidhyamitra.com/city/rishikesh/1963-08-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T15:17:26.713Z","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":"2026-05-20T15:17:26.713Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T15:17:26.713Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}