{"id":"vidhyamitra:city-day:rishikesh:1964-09-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1964-09-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1964-09-07","date_display":"September 7, 1964 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":1964,"month":9,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438645.770833,"kali_year":5066,"ahargana":1850180.2708,"sun":{"sidereal_longitude":140.466,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":153.123,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":12.6569,"elapsed_within_tithi_degrees":0.6569},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":153.123,"elapsed_within_degrees":6.4563},"yoga":{"number":23,"name":"Śubha","sum_longitude":293.589},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1964,"month":9,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438645.770833,"ahargana":1850180.2708,"kali_year":5066,"ayanamsa_lahiri":23.3597,"grahas":{"sun":{"sidereal_longitude":141.088456,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":151.85925599999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":4.4798},"mars":{"sidereal_longitude":92.02315599999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":133.12275599999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":33.37385599999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":95.910056,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":308.038856,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":68.5456,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":248.5456,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"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":1964,"month":9,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438645.770833,"kali_year":5066,"ahargana":1850180.2708,"sun":{"sidereal_longitude":140.466,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":153.123,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":12.6569,"elapsed_within_tithi_degrees":0.6569},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":153.123,"elapsed_within_degrees":6.4563},"yoga":{"number":23,"name":"Śubha","sum_longitude":293.589},"karana":{"half_tithi_index":2,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.48,"elongation":12.657},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.48,"opposition_distance":167.343}},"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":"05:56","sunsetLocal":"18:33","solarNoonLocal":"12:14","dayLengthHours":12.604411319348497,"dayLengthDisplay":"12 Hours 36 Mins 16 Secs","nightLengthDisplay":"11 Hours 23 Mins 44 Secs","moonriseLocal":"06:50","moonsetLocal":"19:05","rahuKala":{"name":"Rāhu Kāla","start":"07:31","end":"09:05","startHours":7.512870772393603,"endHours":9.088422187312165,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:40","end":"12:14","startHours":10.663973602230726,"endHours":12.23952501714929,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:49","end":"15:23","startHours":13.815076432067851,"endHours":15.390627846986412,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:53","end":"09:18","startHours":8.878348665323024,"endHours":9.298495709301307,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:28","end":"06:48","startHours":6.462503162447895,"endHours":6.798620797630521,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:40","startHours":11.819377973171006,"endHours":12.659672061127571,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:15","end":"05:06","startHours":4.256731181561908,"endHours":5.097025269518475,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:53","end":"05:56","startHours":4.886951747529333,"endHours":5.937319357475041,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:20","end":"15:11","startHours":14.340260237040706,"endHours":15.180554324997273,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:21","end":"18:45","startHours":18.341730676823538,"endHours":18.741730676823536,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:33","end":"19:04","startHours":18.541730676823537,"endHours":19.066914481796392,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:18","end":"20:03","startHours":18.291730676823537,"endHours":20.041730676823537,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:40","startHours":23.819377973171008,"endHours":24.659672061127573,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:56","end":"07:31","startHours":5.937319357475041,"endHours":7.512870772393603,"quality":"auspicious"},{"name":"Kāla","start":"07:31","end":"09:05","startHours":7.512870772393603,"endHours":9.088422187312165,"quality":"inauspicious"},{"name":"Śubha","start":"09:05","end":"10:40","startHours":9.088422187312165,"endHours":10.663973602230726,"quality":"auspicious"},{"name":"Roga","start":"10:40","end":"12:14","startHours":10.663973602230726,"endHours":12.23952501714929,"quality":"inauspicious"},{"name":"Udveg","start":"12:14","end":"13:49","startHours":12.23952501714929,"endHours":13.815076432067851,"quality":"inauspicious"},{"name":"Chala","start":"13:49","end":"15:23","startHours":13.815076432067851,"endHours":15.390627846986412,"quality":"neutral"},{"name":"Labha","start":"15:23","end":"16:58","startHours":15.390627846986412,"endHours":16.966179261904976,"quality":"auspicious"},{"name":"Amṛta","start":"16:58","end":"18:33","startHours":16.966179261904976,"endHours":18.541730676823537,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:33","end":"19:58","startHours":18.541730676823537,"endHours":19.966179261904976,"quality":"neutral"},{"name":"Labha","start":"19:58","end":"21:23","startHours":19.966179261904976,"endHours":21.390627846986412,"quality":"auspicious"},{"name":"Amṛta","start":"21:23","end":"22:49","startHours":21.390627846986412,"endHours":22.81507643206785,"quality":"auspicious"},{"name":"Kāla","start":"22:49","end":"00:14","startHours":22.81507643206785,"endHours":24.23952501714929,"quality":"inauspicious"},{"name":"Śubha","start":"00:14","end":"01:40","startHours":24.23952501714929,"endHours":25.663973602230726,"quality":"auspicious"},{"name":"Roga","start":"01:40","end":"03:05","startHours":25.663973602230726,"endHours":27.088422187312165,"quality":"inauspicious"},{"name":"Udveg","start":"03:05","end":"04:31","startHours":27.088422187312165,"endHours":28.512870772393605,"quality":"inauspicious"},{"name":"Chala","start":"04:31","end":"05:56","startHours":28.512870772393605,"endHours":29.93731935747504,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:56","end":"06:56","startHours":5.937319357475041,"endHours":6.937319357475041,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:56","end":"07:56","startHours":6.937319357475041,"endHours":7.937319357475041,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:56","end":"08:56","startHours":7.937319357475041,"endHours":8.93731935747504,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:56","end":"09:56","startHours":8.93731935747504,"endHours":9.93731935747504,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:56","end":"10:56","startHours":9.93731935747504,"endHours":10.93731935747504,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:56","end":"11:56","startHours":10.93731935747504,"endHours":11.93731935747504,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:56","end":"12:56","startHours":11.93731935747504,"endHours":12.93731935747504,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:56","end":"13:56","startHours":12.93731935747504,"endHours":13.93731935747504,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:56","end":"14:56","startHours":13.93731935747504,"endHours":14.93731935747504,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:56","end":"15:56","startHours":14.93731935747504,"endHours":15.93731935747504,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:56","end":"16:56","startHours":15.93731935747504,"endHours":16.93731935747504,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:56","end":"17:56","startHours":16.93731935747504,"endHours":17.93731935747504,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:56","end":"18:56","startHours":17.93731935747504,"endHours":18.93731935747504,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:56","end":"19:56","startHours":18.93731935747504,"endHours":19.93731935747504,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:56","end":"20:56","startHours":19.93731935747504,"endHours":20.93731935747504,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:56","end":"21:56","startHours":20.93731935747504,"endHours":21.93731935747504,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:56","end":"22:56","startHours":21.93731935747504,"endHours":22.93731935747504,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:56","end":"23:56","startHours":22.93731935747504,"endHours":23.93731935747504,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:56","end":"00:56","startHours":23.93731935747504,"endHours":24.93731935747504,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:56","end":"01:56","startHours":24.93731935747504,"endHours":25.93731935747504,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:56","end":"02:56","startHours":25.93731935747504,"endHours":26.93731935747504,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:56","end":"03:56","startHours":26.93731935747504,"endHours":27.93731935747504,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:56","end":"04:56","startHours":27.93731935747504,"endHours":28.93731935747504,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:56","end":"05:56","startHours":28.93731935747504,"endHours":29.93731935747504,"planetary_lord":"Venus"}],"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-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":6.121439331578523,"eotMinutes":2.5580989710426816,"ayanamsa":23.3597}},"calendars":{"vikram_samvat":2021,"vikram_samvatsara":"Piṅgala","saka_samvat":1886,"saka_samvatsara":"Krodhi","bengali_samvat":1371,"malayalam_era":1140,"nanakshahi_year":495,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Dvitīyā · Vikram 2021 Piṅgala · Śaka 1886 Krodhi"},"festivals":[{"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":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 September 7, 1964 CE · Ṛṣikeśa · Vidhyamitra","description":"September 7, 1964 CE for Ṛṣikeśa: Śukla Dvitīyā, sūryodaya 05:56, sūryāsta 18:33.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1964-09-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1964-09-07","sa":"https://sa.vidhyamitra.com/city/rishikesh/1964-09-07","hi":"https://hi.vidhyamitra.com/city/rishikesh/1964-09-07","x-default":"https://vidhyamitra.com/city/rishikesh/1964-09-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T00:40:30.211Z","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":"2026-05-22T00:40:30.211Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T00:40:30.211Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}