{"id":"vidhyamitra:city-day:vrindavan:1980-04-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1980-04-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-04-07","date_display":"April 7, 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":"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":1980,"month":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444336.770833,"kali_year":5081,"ahargana":1855871.2708,"sun":{"sidereal_longitude":354.0034,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":249.7539,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":255.7505,"elapsed_within_tithi_degrees":3.7505},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":249.7539,"elapsed_within_degrees":9.7539},"yoga":{"number":19,"name":"Parigha","sum_longitude":243.7574},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"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":1980,"month":4,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444336.770833,"ahargana":1855871.2708,"kali_year":5081,"ayanamsa_lahiri":23.5773,"grahas":{"sun":{"sidereal_longitude":353.804818,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"moon":{"sidereal_longitude":246.08281799999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false,"latitude":3.7837},"mars":{"sidereal_longitude":122.57851800000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":326.7438179999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":127.06761800000004,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":39.93881799999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":148.098318,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":127.009,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":307.009,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1980,"month":4,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444336.770833,"kali_year":5081,"ahargana":1855871.2708,"sun":{"sidereal_longitude":354.0034,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":249.7539,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":22,"name":"Saptamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Saptamī","elongation_degrees":255.7505,"elapsed_within_tithi_degrees":3.7505},"nakshatra":{"number":19,"name":"Mūla","pada":3,"moon_longitude":249.7539,"elapsed_within_degrees":9.7539},"yoga":{"number":19,"name":"Parigha","sum_longitude":243.7574},"karana":{"half_tithi_index":42,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.784,"elongation":104.249},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.784,"opposition_distance":75.751}},"eclipse_window_40days":[]},"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:04","sunsetLocal":"18:40","solarNoonLocal":"12:22","dayLengthHours":12.604024661771454,"dayLengthDisplay":"12 Hours 36 Mins 14 Secs","nightLengthDisplay":"11 Hours 23 Mins 46 Secs","moonriseLocal":"00:00","moonsetLocal":"10:22","rahuKala":{"name":"Rāhu Kāla","start":"07:38","end":"09:13","startHours":7.637670960916252,"endHours":9.213174043637684,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:47","end":"12:22","startHours":10.788677126359115,"endHours":12.364180209080548,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:56","end":"15:31","startHours":13.93968329180198,"endHours":15.515186374523411,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:25","startHours":9.003106965941493,"endHours":9.423241121333875,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:35","end":"06:55","startHours":6.587335572435298,"endHours":6.923442896749203,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:47","startHours":11.944046053688165,"endHours":12.78431436447293,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:23","end":"05:13","startHours":4.381631256625293,"endHours":5.221899567410057,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:01","end":"06:04","startHours":5.011832489713866,"endHours":6.0621678781948205,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:28","end":"15:18","startHours":14.464850986042457,"endHours":15.30511929682722,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:28","end":"18:52","startHours":18.466192539966276,"endHours":18.866192539966274,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:40","end":"19:11","startHours":18.666192539966275,"endHours":19.19136023420675,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:25","end":"20:10","startHours":18.416192539966275,"endHours":20.166192539966275,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:47","startHours":23.944046053688165,"endHours":24.78431436447293,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:04","end":"07:38","startHours":6.0621678781948205,"endHours":7.637670960916252,"quality":"auspicious"},{"name":"Kāla","start":"07:38","end":"09:13","startHours":7.637670960916252,"endHours":9.213174043637684,"quality":"inauspicious"},{"name":"Śubha","start":"09:13","end":"10:47","startHours":9.213174043637684,"endHours":10.788677126359115,"quality":"auspicious"},{"name":"Roga","start":"10:47","end":"12:22","startHours":10.788677126359115,"endHours":12.364180209080548,"quality":"inauspicious"},{"name":"Udveg","start":"12:22","end":"13:56","startHours":12.364180209080548,"endHours":13.93968329180198,"quality":"inauspicious"},{"name":"Chala","start":"13:56","end":"15:31","startHours":13.93968329180198,"endHours":15.515186374523411,"quality":"neutral"},{"name":"Labha","start":"15:31","end":"17:05","startHours":15.515186374523411,"endHours":17.090689457244842,"quality":"auspicious"},{"name":"Amṛta","start":"17:05","end":"18:40","startHours":17.090689457244842,"endHours":18.666192539966275,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:40","end":"20:05","startHours":18.666192539966275,"endHours":20.090689457244842,"quality":"neutral"},{"name":"Labha","start":"20:05","end":"21:31","startHours":20.090689457244842,"endHours":21.51518637452341,"quality":"auspicious"},{"name":"Amṛta","start":"21:31","end":"22:56","startHours":21.51518637452341,"endHours":22.93968329180198,"quality":"auspicious"},{"name":"Kāla","start":"22:56","end":"00:22","startHours":22.93968329180198,"endHours":24.364180209080548,"quality":"inauspicious"},{"name":"Śubha","start":"00:22","end":"01:47","startHours":24.364180209080548,"endHours":25.788677126359115,"quality":"auspicious"},{"name":"Roga","start":"01:47","end":"03:13","startHours":25.788677126359115,"endHours":27.213174043637686,"quality":"inauspicious"},{"name":"Udveg","start":"03:13","end":"04:38","startHours":27.213174043637686,"endHours":28.637670960916253,"quality":"inauspicious"},{"name":"Chala","start":"04:38","end":"06:04","startHours":28.637670960916253,"endHours":30.06216787819482,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:04","end":"07:04","startHours":6.0621678781948205,"endHours":7.0621678781948205,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:04","end":"08:04","startHours":7.0621678781948205,"endHours":8.06216787819482,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:04","end":"09:04","startHours":8.06216787819482,"endHours":9.06216787819482,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:04","end":"10:04","startHours":9.06216787819482,"endHours":10.06216787819482,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:04","end":"11:04","startHours":10.06216787819482,"endHours":11.06216787819482,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:04","end":"12:04","startHours":11.06216787819482,"endHours":12.06216787819482,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:04","end":"13:04","startHours":12.06216787819482,"endHours":13.06216787819482,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:04","end":"14:04","startHours":13.06216787819482,"endHours":14.06216787819482,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:04","end":"15:04","startHours":14.06216787819482,"endHours":15.06216787819482,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:04","end":"16:04","startHours":15.06216787819482,"endHours":16.06216787819482,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:04","end":"17:04","startHours":16.06216787819482,"endHours":17.06216787819482,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:04","end":"18:04","startHours":17.06216787819482,"endHours":18.06216787819482,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:04","end":"19:04","startHours":18.06216787819482,"endHours":19.06216787819482,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:04","end":"20:04","startHours":19.06216787819482,"endHours":20.06216787819482,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:04","end":"21:04","startHours":20.06216787819482,"endHours":21.06216787819482,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:04","end":"22:04","startHours":21.06216787819482,"endHours":22.06216787819482,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:04","end":"23:04","startHours":22.06216787819482,"endHours":23.06216787819482,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:04","end":"00:04","startHours":23.06216787819482,"endHours":24.06216787819482,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:04","end":"01:04","startHours":24.06216787819482,"endHours":25.06216787819482,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:04","end":"02:04","startHours":25.06216787819482,"endHours":26.06216787819482,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:04","end":"03:04","startHours":26.06216787819482,"endHours":27.06216787819482,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:04","end":"04:04","startHours":27.06216787819482,"endHours":28.06216787819482,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:04","end":"05:04","startHours":28.06216787819482,"endHours":29.06216787819482,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:04","end":"06:04","startHours":29.06216787819482,"endHours":30.06216787819482,"planetary_lord":"Venus"}],"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":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":6.823993203162568,"eotMinutes":-2.4880125448329173,"ayanamsa":23.5773}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Saptamī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[],"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":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga April 7, 1980 CE · Vṛndāvana · Vidhyamitra","description":"April 7, 1980 CE for Vṛndāvana: Kṛṣṇa Saptamī, sūryodaya 06:04, sūryāsta 18:40.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1980-04-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1980-04-07","sa":"https://sa.vidhyamitra.com/city/vrindavan/1980-04-07","hi":"https://hi.vidhyamitra.com/city/vrindavan/1980-04-07","x-default":"https://vidhyamitra.com/city/vrindavan/1980-04-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T06:51:57.593Z","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":"2026-06-02T06:51:57.593Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T06:51:57.593Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}