{"id":"vidhyamitra:city-day:rishikesh:1964-09-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1964-09-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1964-09-27","date_display":"September 27, 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":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438665.770833,"kali_year":5066,"ahargana":1850200.2708,"sun":{"sidereal_longitude":159.9464,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":48.0728,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.1264,"elapsed_within_tithi_degrees":8.1264},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":48.0728,"elapsed_within_degrees":8.0728},"yoga":{"number":16,"name":"Siddhi","sum_longitude":208.0191},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438665.770833,"ahargana":1850200.2708,"kali_year":5066,"ayanamsa_lahiri":23.3604,"grahas":{"sun":{"sidereal_longitude":160.60489199999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"moon":{"sidereal_longitude":49.74119200000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false,"latitude":-1.4943},"mars":{"sidereal_longitude":104.32589200000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":146.764392,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":33.20739200000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":true},"venus":{"sidereal_longitude":117.32339200000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":306.73999200000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":67.4859,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":247.4859,"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":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438665.770833,"kali_year":5066,"ahargana":1850200.2708,"sun":{"sidereal_longitude":159.9464,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":48.0728,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":248.1264,"elapsed_within_tithi_degrees":8.1264},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3,"moon_longitude":48.0728,"elapsed_within_degrees":8.0728},"yoga":{"number":16,"name":"Siddhi","sum_longitude":208.0191},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.494,"elongation":111.874},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.494,"opposition_distance":68.126}},"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":"06:07","sunsetLocal":"18:07","solarNoonLocal":"12:07","dayLengthHours":12.006623720907342,"dayLengthDisplay":"12 Hours 00 Mins 24 Secs","nightLengthDisplay":"11 Hours 59 Mins 36 Secs","moonriseLocal":"21:45","moonsetLocal":"11:42","rahuKala":{"name":"Rāhu Kāla","start":"16:37","end":"18:07","startHours":16.620631135428283,"endHours":18.121459100541703,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:07","end":"13:37","startHours":12.118147240088032,"endHours":13.618975205201448,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:07","end":"16:37","startHours":15.119803170314867,"endHours":16.620631135428283,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:19","startHours":8.91638091451274,"endHours":9.316601705209651,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.615111368005499,"endHours":6.935288000563028,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:31","startHours":11.71792644939112,"endHours":12.518368030784943,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:19","startHours":4.5139522168467145,"endHours":5.314393798240537,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:07","startHours":5.114283402892081,"endHours":6.11483537963436,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:07","end":"14:55","startHours":14.119251193572588,"endHours":14.91969277496641,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:55","end":"18:19","startHours":17.921459100541703,"endHours":18.321459100541702,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:07","end":"18:37","startHours":18.121459100541703,"endHours":18.621735088912843,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:52","end":"19:37","startHours":17.871459100541703,"endHours":19.621459100541703,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:31","startHours":23.717926449391122,"endHours":24.51836803078494,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:07","end":"07:37","startHours":6.11483537963436,"endHours":7.6156633447477775,"quality":"inauspicious"},{"name":"Chala","start":"07:37","end":"09:07","startHours":7.6156633447477775,"endHours":9.116491309861196,"quality":"neutral"},{"name":"Labha","start":"09:07","end":"10:37","startHours":9.116491309861196,"endHours":10.617319274974612,"quality":"auspicious"},{"name":"Amṛta","start":"10:37","end":"12:07","startHours":10.617319274974612,"endHours":12.118147240088032,"quality":"auspicious"},{"name":"Kāla","start":"12:07","end":"13:37","startHours":12.118147240088032,"endHours":13.618975205201448,"quality":"inauspicious"},{"name":"Śubha","start":"13:37","end":"15:07","startHours":13.618975205201448,"endHours":15.119803170314867,"quality":"auspicious"},{"name":"Roga","start":"15:07","end":"16:37","startHours":15.119803170314867,"endHours":16.620631135428283,"quality":"inauspicious"},{"name":"Udveg","start":"16:37","end":"18:07","startHours":16.620631135428283,"endHours":18.121459100541703,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:07","end":"19:37","startHours":18.121459100541703,"endHours":19.620631135428283,"quality":"auspicious"},{"name":"Roga","start":"19:37","end":"21:07","startHours":19.620631135428283,"endHours":21.119803170314867,"quality":"inauspicious"},{"name":"Udveg","start":"21:07","end":"22:37","startHours":21.119803170314867,"endHours":22.61897520520145,"quality":"inauspicious"},{"name":"Chala","start":"22:37","end":"00:07","startHours":22.61897520520145,"endHours":24.11814724008803,"quality":"neutral"},{"name":"Labha","start":"00:07","end":"01:37","startHours":24.11814724008803,"endHours":25.617319274974612,"quality":"auspicious"},{"name":"Amṛta","start":"01:37","end":"03:07","startHours":25.617319274974612,"endHours":27.116491309861196,"quality":"auspicious"},{"name":"Kāla","start":"03:07","end":"04:37","startHours":27.116491309861196,"endHours":28.61566334474778,"quality":"inauspicious"},{"name":"Śubha","start":"04:37","end":"06:07","startHours":28.61566334474778,"endHours":30.11483537963436,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.11483537963436,"endHours":7.11483537963436,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.11483537963436,"endHours":8.11483537963436,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.11483537963436,"endHours":9.11483537963436,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.11483537963436,"endHours":10.11483537963436,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.11483537963436,"endHours":11.11483537963436,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.11483537963436,"endHours":12.11483537963436,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.11483537963436,"endHours":13.11483537963436,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.11483537963436,"endHours":14.11483537963436,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.11483537963436,"endHours":15.11483537963436,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.11483537963436,"endHours":16.11483537963436,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.11483537963436,"endHours":17.11483537963436,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.11483537963436,"endHours":18.11483537963436,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.11483537963436,"endHours":19.11483537963436,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.11483537963436,"endHours":20.11483537963436,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.11483537963436,"endHours":21.11483537963436,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.11483537963436,"endHours":22.11483537963436,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.11483537963436,"endHours":23.11483537963436,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.11483537963436,"endHours":24.11483537963436,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.11483537963436,"endHours":25.11483537963436,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.11483537963436,"endHours":26.11483537963436,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.11483537963436,"endHours":27.11483537963436,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.11483537963436,"endHours":28.11483537963436,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.11483537963436,"endHours":29.11483537963436,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.11483537963436,"endHours":30.11483537963436,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-1.5760654155647096,"eotMinutes":9.840765594718077,"ayanamsa":23.3604}},"calendars":{"vikram_samvat":2021,"vikram_samvatsara":"Piṅgala","saka_samvat":1886,"saka_samvatsara":"Krodhi","bengali_samvat":1371,"malayalam_era":1140,"nanakshahi_year":495,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Ṣaṣṭhī · Vikram 2021 Piṅgala · Śaka 1886 Krodhi"},"festivals":[],"todays_walk":{"walk":{"id":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Rohiṇī","url":"/day/-3226-07-09","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 September 27, 1964 CE · Ṛṣikeśa · Vidhyamitra","description":"September 27, 1964 CE for Ṛṣikeśa: Kṛṣṇa Ṣaṣṭhī, sūryodaya 06:07, sūryāsta 18:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1964-09-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1964-09-27","sa":"https://sa.vidhyamitra.com/city/rishikesh/1964-09-27","hi":"https://hi.vidhyamitra.com/city/rishikesh/1964-09-27","x-default":"https://vidhyamitra.com/city/rishikesh/1964-09-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T20:27:37.365Z","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":"2026-05-31T20:27:37.365Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T20:27:37.365Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}