{"id":"vidhyamitra:city-day:rishikesh:1980-09-26:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/rishikesh/1980-09-26","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-09-26","date_display":"September 26, 1980 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1980,"month":9,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444508.770833,"kali_year":5082,"ahargana":1856043.2708,"sun":{"sidereal_longitude":158.8288,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":358.9699,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":200.1411,"elapsed_within_tithi_degrees":8.1411},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.9699,"elapsed_within_degrees":12.3032},"yoga":{"number":12,"name":"Dhruva","sum_longitude":157.7987},"karana":{"half_tithi_index":33,"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":1980,"month":9,"day":26,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444508.770833,"ahargana":1856043.2708,"kali_year":5082,"ayanamsa_lahiri":23.5839,"grahas":{"sun":{"sidereal_longitude":159.525346,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":1.4096460000000093,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false,"latitude":-3.9377},"mars":{"sidereal_longitude":205.36174600000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":181.18734599999993,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":149.89144599999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":116.55154600000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":156.71884599999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":117.8956,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":297.8956,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":1980,"month":9,"day":26,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444508.770833,"kali_year":5082,"ahargana":1856043.2708,"sun":{"sidereal_longitude":158.8288,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":358.9699,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":200.1411,"elapsed_within_tithi_degrees":8.1411},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":358.9699,"elapsed_within_degrees":12.3032},"yoga":{"number":12,"name":"Dhruva","sum_longitude":157.7987},"karana":{"half_tithi_index":33,"name":"Gara"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.938,"elongation":159.859},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.938,"opposition_distance":20.141}},"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":"06:06","sunsetLocal":"18:08","solarNoonLocal":"12:07","dayLengthHours":12.032880453628795,"dayLengthDisplay":"12 Hours 01 Mins 58 Secs","nightLengthDisplay":"11 Hours 58 Mins 02 Secs","moonriseLocal":"19:10","moonsetLocal":"08:00","rahuKala":{"name":"Rāhu Kāla","start":"10:37","end":"12:07","startHours":10.61978529854374,"endHours":12.123895355247338,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:08","end":"16:38","startHours":15.13211546865454,"endHours":16.63622552535814,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:37","end":"09:07","startHours":7.611565185136541,"endHours":9.11567524184014,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:19","startHours":8.91512723427966,"endHours":9.31622324940062,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.608825147334141,"endHours":6.929701959430909,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:43","end":"12:31","startHours":11.72279934012638,"endHours":12.5249913703683,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:30","end":"05:18","startHours":4.503071067949103,"endHours":5.305263098191022,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:06","end":"06:06","startHours":5.104715090630542,"endHours":6.1074551284329415,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:08","end":"14:56","startHours":14.12937543085214,"endHours":14.931567461094058,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:56","end":"18:20","startHours":17.94033558206174,"endHours":18.340335582061737,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:08","end":"18:39","startHours":18.140335582061738,"endHours":18.641705600962936,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:53","end":"19:38","startHours":17.890335582061738,"endHours":19.640335582061738,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:43","end":"00:31","startHours":23.722799340126382,"endHours":24.5249913703683,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:06","end":"07:37","startHours":6.1074551284329415,"endHours":7.611565185136541,"quality":"neutral"},{"name":"Labha","start":"07:37","end":"09:07","startHours":7.611565185136541,"endHours":9.11567524184014,"quality":"auspicious"},{"name":"Amṛta","start":"09:07","end":"10:37","startHours":9.11567524184014,"endHours":10.61978529854374,"quality":"auspicious"},{"name":"Kāla","start":"10:37","end":"12:07","startHours":10.61978529854374,"endHours":12.123895355247338,"quality":"inauspicious"},{"name":"Śubha","start":"12:07","end":"13:38","startHours":12.123895355247338,"endHours":13.628005411950937,"quality":"auspicious"},{"name":"Roga","start":"13:38","end":"15:08","startHours":13.628005411950937,"endHours":15.13211546865454,"quality":"inauspicious"},{"name":"Udveg","start":"15:08","end":"16:38","startHours":15.13211546865454,"endHours":16.63622552535814,"quality":"inauspicious"},{"name":"Chala","start":"16:38","end":"18:08","startHours":16.63622552535814,"endHours":18.140335582061738,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:08","end":"19:38","startHours":18.140335582061738,"endHours":19.63622552535814,"quality":"inauspicious"},{"name":"Udveg","start":"19:38","end":"21:08","startHours":19.63622552535814,"endHours":21.13211546865454,"quality":"inauspicious"},{"name":"Chala","start":"21:08","end":"22:38","startHours":21.13211546865454,"endHours":22.628005411950937,"quality":"neutral"},{"name":"Labha","start":"22:38","end":"00:07","startHours":22.628005411950937,"endHours":24.123895355247342,"quality":"auspicious"},{"name":"Amṛta","start":"00:07","end":"01:37","startHours":24.123895355247342,"endHours":25.61978529854374,"quality":"auspicious"},{"name":"Kāla","start":"01:37","end":"03:07","startHours":25.61978529854374,"endHours":27.11567524184014,"quality":"inauspicious"},{"name":"Śubha","start":"03:07","end":"04:37","startHours":27.11567524184014,"endHours":28.61156518513654,"quality":"auspicious"},{"name":"Roga","start":"04:37","end":"06:06","startHours":28.61156518513654,"endHours":30.107455128432942,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:06","end":"07:06","startHours":6.1074551284329415,"endHours":7.1074551284329415,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:06","end":"08:06","startHours":7.1074551284329415,"endHours":8.107455128432942,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:06","end":"09:06","startHours":8.107455128432942,"endHours":9.107455128432942,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:06","end":"10:06","startHours":9.107455128432942,"endHours":10.107455128432942,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:06","end":"11:06","startHours":10.107455128432942,"endHours":11.107455128432942,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:06","end":"12:06","startHours":11.107455128432942,"endHours":12.107455128432942,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:06","end":"13:06","startHours":12.107455128432942,"endHours":13.107455128432942,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:06","end":"14:06","startHours":13.107455128432942,"endHours":14.107455128432942,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:06","end":"15:06","startHours":14.107455128432942,"endHours":15.107455128432942,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:06","end":"16:06","startHours":15.107455128432942,"endHours":16.107455128432942,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:06","end":"17:06","startHours":16.107455128432942,"endHours":17.107455128432942,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:06","end":"18:06","startHours":17.107455128432942,"endHours":18.107455128432942,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:06","end":"19:06","startHours":18.107455128432942,"endHours":19.107455128432942,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:06","end":"20:06","startHours":19.107455128432942,"endHours":20.107455128432942,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:06","end":"21:06","startHours":20.107455128432942,"endHours":21.107455128432942,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:06","end":"22:06","startHours":21.107455128432942,"endHours":22.107455128432942,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:06","end":"23:06","startHours":22.107455128432942,"endHours":23.107455128432942,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:06","end":"00:06","startHours":23.107455128432942,"endHours":24.107455128432942,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:06","end":"01:06","startHours":24.107455128432942,"endHours":25.107455128432942,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:06","end":"02:06","startHours":25.107455128432942,"endHours":26.107455128432942,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:06","end":"03:06","startHours":26.107455128432942,"endHours":27.107455128432942,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:06","end":"04:06","startHours":27.107455128432942,"endHours":28.107455128432942,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:06","end":"05:06","startHours":28.107455128432942,"endHours":29.107455128432942,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:06","end":"06:06","startHours":29.107455128432942,"endHours":30.107455128432942,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","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":"Siddhi","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":-1.2361370881393194,"eotMinutes":9.49587868515961,"ayanamsa":23.5839}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"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 Dvitīyā · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[],"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":[]},"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 26, 1980 CE · Ṛṣikeśa · Vidhyamitra","description":"September 26, 1980 CE for Ṛṣikeśa: Kṛṣṇa Dvitīyā, sūryodaya 06:06, sūryāsta 18:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/rishikesh/1980-09-26","hreflang_alternates":{"en":"https://vidhyamitra.com/city/rishikesh/1980-09-26","sa":"https://sa.vidhyamitra.com/city/rishikesh/1980-09-26","hi":"https://hi.vidhyamitra.com/city/rishikesh/1980-09-26","x-default":"https://vidhyamitra.com/city/rishikesh/1980-09-26"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-08-10T06:29:29.042Z","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":"2026-08-10T06:29:29.042Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-08-10T06:29:29.042Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Goloka/Vraja Rādhā-Krishna","Vaikuṇṭha Lakṣmī-Nārāyaṇa","Mahāviṣṇu/Kāraṇodakaśāyī Viṣṇu","Garbhodakaśāyī Viṣṇu","Brahmā","Kṣīrodaka Paramātmā/Antaryāmī (Kṣīrodakaśāyī Viṣṇu)","Bhūmi","reader's own kṣetra anywhere on Bhūmi","exact reading kṣetra","reader-bhakta","chitta/vāṇī/aṅgulī","keyboard-silicon-pathways","Vidhyāmitra substrate","reader/seer","Krishna"],"antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}