{"id":"vidhyamitra:city-day:rishikesh:1964-08-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1964-08-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1964-08-28","date_display":"August 28, 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":8,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438635.770833,"kali_year":5066,"ahargana":1850170.2708,"sun":{"sidereal_longitude":130.8175,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":10.9499,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":240.1325,"elapsed_within_tithi_degrees":0.1325},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.9499,"elapsed_within_degrees":10.9499},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.7674},"karana":{"half_tithi_index":40,"name":"Gara"},"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":1964,"month":8,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438635.770833,"ahargana":1850170.2708,"kali_year":5066,"ayanamsa_lahiri":23.3593,"grahas":{"sun":{"sidereal_longitude":131.405238,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":10.988137999999992,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false,"latitude":-3.8203},"mars":{"sidereal_longitude":85.68293799999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":141.87163799999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":true},"jupiter":{"sidereal_longitude":32.96293800000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":86.01633800000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":308.78163799999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":69.0754,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":249.0754,"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":8,"day":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438635.770833,"kali_year":5066,"ahargana":1850170.2708,"sun":{"sidereal_longitude":130.8175,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":10.9499,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":240.1325,"elapsed_within_tithi_degrees":0.1325},"nakshatra":{"number":1,"name":"Aśvinī","pada":4,"moon_longitude":10.9499,"elapsed_within_degrees":10.9499},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.7674},"karana":{"half_tithi_index":40,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.82,"elongation":119.868},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.82,"opposition_distance":60.132}},"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":"05:51","sunsetLocal":"18:45","solarNoonLocal":"12:18","dayLengthHours":12.893837575781088,"dayLengthDisplay":"12 Hours 53 Mins 38 Secs","nightLengthDisplay":"11 Hours 06 Mins 22 Secs","moonriseLocal":"21:43","moonsetLocal":"10:50","rahuKala":{"name":"Rāhu Kāla","start":"10:41","end":"12:18","startHours":10.683939115043767,"endHours":12.295668812016402,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:31","end":"17:08","startHours":15.519128205961675,"endHours":17.13085790293431,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:28","end":"09:04","startHours":7.460479721098494,"endHours":9.07220941807113,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:51","end":"09:17","startHours":8.857312125141446,"endHours":9.287106711000815,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:23","end":"06:44","startHours":6.385993256450071,"endHours":6.729828925137567,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:44","startHours":11.865874226157034,"endHours":12.725463397875773,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:08","end":"04:59","startHours":4.129571680688381,"endHours":4.989160852407119,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:46","end":"05:51","startHours":4.7742635594774345,"endHours":5.8487500241258585,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:18","startHours":14.444641741313252,"endHours":15.30423091303199,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:33","end":"18:57","startHours":18.54258759990695,"endHours":18.942587599906947,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:45","end":"19:17","startHours":18.742587599906948,"endHours":19.27983083223116,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:30","end":"20:15","startHours":18.492587599906948,"endHours":20.242587599906948,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:44","startHours":23.865874226157032,"endHours":24.72546339787577,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:51","end":"07:28","startHours":5.8487500241258585,"endHours":7.460479721098494,"quality":"neutral"},{"name":"Labha","start":"07:28","end":"09:04","startHours":7.460479721098494,"endHours":9.07220941807113,"quality":"auspicious"},{"name":"Amṛta","start":"09:04","end":"10:41","startHours":9.07220941807113,"endHours":10.683939115043767,"quality":"auspicious"},{"name":"Kāla","start":"10:41","end":"12:18","startHours":10.683939115043767,"endHours":12.295668812016402,"quality":"inauspicious"},{"name":"Śubha","start":"12:18","end":"13:54","startHours":12.295668812016402,"endHours":13.90739850898904,"quality":"auspicious"},{"name":"Roga","start":"13:54","end":"15:31","startHours":13.90739850898904,"endHours":15.519128205961675,"quality":"inauspicious"},{"name":"Udveg","start":"15:31","end":"17:08","startHours":15.519128205961675,"endHours":17.13085790293431,"quality":"inauspicious"},{"name":"Chala","start":"17:08","end":"18:45","startHours":17.13085790293431,"endHours":18.742587599906948,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:45","end":"20:08","startHours":18.742587599906948,"endHours":20.130857902934313,"quality":"inauspicious"},{"name":"Udveg","start":"20:08","end":"21:31","startHours":20.130857902934313,"endHours":21.519128205961675,"quality":"inauspicious"},{"name":"Chala","start":"21:31","end":"22:54","startHours":21.519128205961675,"endHours":22.90739850898904,"quality":"neutral"},{"name":"Labha","start":"22:54","end":"00:18","startHours":22.90739850898904,"endHours":24.2956688120164,"quality":"auspicious"},{"name":"Amṛta","start":"00:18","end":"01:41","startHours":24.2956688120164,"endHours":25.683939115043767,"quality":"auspicious"},{"name":"Kāla","start":"01:41","end":"03:04","startHours":25.683939115043767,"endHours":27.072209418071132,"quality":"inauspicious"},{"name":"Śubha","start":"03:04","end":"04:28","startHours":27.072209418071132,"endHours":28.460479721098494,"quality":"auspicious"},{"name":"Roga","start":"04:28","end":"05:51","startHours":28.460479721098494,"endHours":29.84875002412586,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.8487500241258585,"endHours":6.8487500241258585,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.8487500241258585,"endHours":7.8487500241258585,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.8487500241258585,"endHours":8.84875002412586,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.84875002412586,"endHours":9.84875002412586,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.84875002412586,"endHours":10.84875002412586,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.84875002412586,"endHours":11.84875002412586,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.84875002412586,"endHours":12.84875002412586,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.84875002412586,"endHours":13.84875002412586,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.84875002412586,"endHours":14.84875002412586,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.84875002412586,"endHours":15.84875002412586,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.84875002412586,"endHours":16.84875002412586,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.84875002412586,"endHours":17.84875002412586,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.84875002412586,"endHours":18.84875002412586,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.84875002412586,"endHours":19.84875002412586,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.84875002412586,"endHours":20.84875002412586,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.84875002412586,"endHours":21.84875002412586,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.84875002412586,"endHours":22.84875002412586,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.84875002412586,"endHours":23.84875002412586,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.84875002412586,"endHours":24.84875002412586,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.84875002412586,"endHours":25.84875002412586,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.84875002412586,"endHours":26.84875002412586,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.84875002412586,"endHours":27.84875002412586,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.84875002412586,"endHours":28.84875002412586,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.84875002412586,"endHours":29.84875002412586,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"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":9.76275800263478,"eotMinutes":-0.8105287209842176,"ayanamsa":23.3593}},"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 Kṛṣṇa Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Ṣaṣṭhī · Vikram 2021 Piṅgala · Śaka 1886 Krodhi"},"festivals":[{"id":"balarama-jayanti","name":"Balarāma Jayantī (Hala-Ṣaṣṭhī)","name_sanskrit":"बलराम जयन्ती","tradition":"Vaishnava","associated_deity":"Balarāma (Krishna's elder brother; ādi-śeṣa)","significance":"Birth of Bala-deva, Krishna's elder brother and Saṅkarṣaṇa.","vrata":true,"detection":{"tithi_number":21,"tithi_paksha":"Kṛṣṇa","lunar_month":"Bhādrapada"},"precedence":3,"sources":["Bhāgavata 10.2-3"]},{"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":"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":"-3101-02-18","event":"Kali Yuga Epoch","chart_id":"kali-yuga-epoch","shared_marker":"same Aśvinī","url":"/day/-3101-02-18","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 August 28, 1964 CE · Ṛṣikeśa · Vidhyamitra","description":"August 28, 1964 CE for Ṛṣikeśa: Kṛṣṇa Ṣaṣṭhī, sūryodaya 05:51, sūryāsta 18:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1964-08-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1964-08-28","sa":"https://sa.vidhyamitra.com/city/rishikesh/1964-08-28","hi":"https://hi.vidhyamitra.com/city/rishikesh/1964-08-28","x-default":"https://vidhyamitra.com/city/rishikesh/1964-08-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-20T11:58:38.733Z","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":"2026-05-20T11:58:38.733Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-20T11:58:38.733Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}