{"id":"vidhyamitra:city-day:rishikesh:1964-04-26:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1964-04-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1964-04-26","date_display":"April 26, 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":4,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438511.770833,"kali_year":5066,"ahargana":1850046.2708,"sun":{"sidereal_longitude":12.6521,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":185.7466,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.0946,"elapsed_within_tithi_degrees":5.0946},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":185.7466,"elapsed_within_degrees":12.4133},"yoga":{"number":15,"name":"Vajra","sum_longitude":198.3987},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":4,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438511.770833,"ahargana":1850046.2708,"kali_year":5066,"ayanamsa_lahiri":23.3545,"grahas":{"sun":{"sidereal_longitude":12.48677600000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":184.72837600000003,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false,"latitude":4.2254},"mars":{"sidereal_longitude":358.383476,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":15.418275999999992,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":10.703175999999985,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":57.72047600000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":310.383876,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":75.6455,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":255.6455,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva 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":1964,"month":4,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438511.770833,"kali_year":5066,"ahargana":1850046.2708,"sun":{"sidereal_longitude":12.6521,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":185.7466,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":173.0946,"elapsed_within_tithi_degrees":5.0946},"nakshatra":{"number":14,"name":"Citrā","pada":4,"moon_longitude":185.7466,"elapsed_within_degrees":12.4133},"yoga":{"number":15,"name":"Vajra","sum_longitude":198.3987},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.225,"elongation":173.095},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.225,"opposition_distance":6.905}},"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":"05:39","sunsetLocal":"18:51","solarNoonLocal":"12:15","dayLengthHours":13.196808562398195,"dayLengthDisplay":"13 Hours 11 Mins 49 Secs","nightLengthDisplay":"10 Hours 48 Mins 11 Secs","moonriseLocal":"18:06","moonsetLocal":"05:21","rahuKala":{"name":"Rāhu Kāla","start":"17:12","end":"18:51","startHours":17.194916867887805,"endHours":18.84451793818758,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:15","end":"13:54","startHours":12.24611365698848,"endHours":13.895714727288256,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:33","end":"17:12","startHours":15.54531579758803,"endHours":17.194916867887805,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:44","end":"09:10","startHours":8.726964707015629,"endHours":9.166858325762236,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:12","end":"06:33","startHours":6.197576399222642,"endHours":6.549491294219927,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:48","end":"12:41","startHours":11.806220038241875,"endHours":12.686007275735086,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:53","end":"04:46","startHours":3.8881349008029584,"endHours":4.767922138296171,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:39","startHours":4.547975328922869,"endHours":5.647709375789384,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:27","end":"15:20","startHours":14.445581750721514,"endHours":15.325368988214727,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:39","end":"19:03","startHours":18.64451793818758,"endHours":19.044517938187578,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:51","end":"19:24","startHours":18.84451793818758,"endHours":19.394384961620837,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:36","end":"20:21","startHours":18.59451793818758,"endHours":20.34451793818758,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:48","end":"00:41","startHours":23.806220038241875,"endHours":24.686007275735086,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:39","end":"07:18","startHours":5.647709375789384,"endHours":7.297310446089159,"quality":"inauspicious"},{"name":"Chala","start":"07:18","end":"08:57","startHours":7.297310446089159,"endHours":8.946911516388933,"quality":"neutral"},{"name":"Labha","start":"08:57","end":"10:36","startHours":8.946911516388933,"endHours":10.596512586688707,"quality":"auspicious"},{"name":"Amṛta","start":"10:36","end":"12:15","startHours":10.596512586688707,"endHours":12.24611365698848,"quality":"auspicious"},{"name":"Kāla","start":"12:15","end":"13:54","startHours":12.24611365698848,"endHours":13.895714727288256,"quality":"inauspicious"},{"name":"Śubha","start":"13:54","end":"15:33","startHours":13.895714727288256,"endHours":15.54531579758803,"quality":"auspicious"},{"name":"Roga","start":"15:33","end":"17:12","startHours":15.54531579758803,"endHours":17.194916867887805,"quality":"inauspicious"},{"name":"Udveg","start":"17:12","end":"18:51","startHours":17.194916867887805,"endHours":18.84451793818758,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:51","end":"20:12","startHours":18.84451793818758,"endHours":20.194916867887805,"quality":"auspicious"},{"name":"Roga","start":"20:12","end":"21:33","startHours":20.194916867887805,"endHours":21.54531579758803,"quality":"inauspicious"},{"name":"Udveg","start":"21:33","end":"22:54","startHours":21.54531579758803,"endHours":22.895714727288258,"quality":"inauspicious"},{"name":"Chala","start":"22:54","end":"00:15","startHours":22.895714727288258,"endHours":24.24611365698848,"quality":"neutral"},{"name":"Labha","start":"00:15","end":"01:36","startHours":24.24611365698848,"endHours":25.596512586688707,"quality":"auspicious"},{"name":"Amṛta","start":"01:36","end":"02:57","startHours":25.596512586688707,"endHours":26.946911516388933,"quality":"auspicious"},{"name":"Kāla","start":"02:57","end":"04:18","startHours":26.946911516388933,"endHours":28.297310446089156,"quality":"inauspicious"},{"name":"Śubha","start":"04:18","end":"05:39","startHours":28.297310446089156,"endHours":29.647709375789383,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:39","end":"06:39","startHours":5.647709375789384,"endHours":6.647709375789384,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:39","end":"07:39","startHours":6.647709375789384,"endHours":7.647709375789384,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:39","end":"08:39","startHours":7.647709375789384,"endHours":8.647709375789384,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:39","end":"09:39","startHours":8.647709375789384,"endHours":9.647709375789384,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:39","end":"10:39","startHours":9.647709375789384,"endHours":10.647709375789384,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:39","end":"11:39","startHours":10.647709375789384,"endHours":11.647709375789384,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:39","end":"12:39","startHours":11.647709375789384,"endHours":12.647709375789384,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:39","end":"13:39","startHours":12.647709375789384,"endHours":13.647709375789384,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:39","end":"14:39","startHours":13.647709375789384,"endHours":14.647709375789384,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:39","end":"15:39","startHours":14.647709375789384,"endHours":15.647709375789384,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:39","end":"16:39","startHours":15.647709375789384,"endHours":16.647709375789383,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:39","end":"17:39","startHours":16.647709375789383,"endHours":17.647709375789383,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:39","end":"18:39","startHours":17.647709375789383,"endHours":18.647709375789383,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:39","end":"19:39","startHours":18.647709375789383,"endHours":19.647709375789383,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:39","end":"20:39","startHours":19.647709375789383,"endHours":20.647709375789383,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:39","end":"21:39","startHours":20.647709375789383,"endHours":21.647709375789383,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:39","end":"22:39","startHours":21.647709375789383,"endHours":22.647709375789383,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:39","end":"23:39","startHours":22.647709375789383,"endHours":23.647709375789383,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:39","end":"00:39","startHours":23.647709375789383,"endHours":24.647709375789383,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:39","end":"01:39","startHours":24.647709375789383,"endHours":25.647709375789383,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:39","end":"02:39","startHours":25.647709375789383,"endHours":26.647709375789383,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:39","end":"03:39","startHours":26.647709375789383,"endHours":27.647709375789383,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:39","end":"04:39","startHours":27.647709375789383,"endHours":28.647709375789383,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:39","end":"05:39","startHours":28.647709375789383,"endHours":29.647709375789383,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":13.467218400001848,"eotMinutes":2.162780580691212,"ayanamsa":23.3545}},"calendars":{"vikram_samvat":2021,"vikram_samvatsara":"Piṅgala","saka_samvat":1886,"saka_samvatsara":"Krodhi","bengali_samvat":1371,"malayalam_era":1140,"nanakshahi_year":495,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Pūrṇimā · Vikram 2021 Piṅgala · Śaka 1886 Krodhi"},"festivals":[{"id":"hanuman-jayanti","name":"Hanumān Jayantī","name_sanskrit":"हनुमान जयन्ती","tradition":"Vaishnava","associated_deity":"Bhagavān Hanumān (Rudra-aṁśa, Rāma-bhakta)","significance":"Birth of Hanumān (Caitra Pūrṇimā tradition; some traditions Mārgaśīrṣa Kṛṣṇa 14).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":1,"sources":["Vālmīki Rāmāyaṇa, Sundara-Kāṇḍa"]}],"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":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","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 April 26, 1964 CE · Ṛṣikeśa · Vidhyamitra","description":"April 26, 1964 CE for Ṛṣikeśa: Śukla Pūrṇimā, sūryodaya 05:39, sūryāsta 18:51.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1964-04-26","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1964-04-26","sa":"https://sa.vidhyamitra.com/city/rishikesh/1964-04-26","hi":"https://hi.vidhyamitra.com/city/rishikesh/1964-04-26","x-default":"https://vidhyamitra.com/city/rishikesh/1964-04-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T09:28:01.795Z","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":"2026-05-31T09:28:01.795Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T09:28:01.795Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}