{"id":"vidhyamitra:city-day:vrindavan:1980-01-27:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1980-01-27","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-27","date_display":"January 27, 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":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444265.770833,"kali_year":5081,"ahargana":1855800.2708,"sun":{"sidereal_longitude":282.7011,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":42.0734,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":119.3723,"elapsed_within_tithi_degrees":11.3723},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":42.0734,"elapsed_within_degrees":2.0734},"yoga":{"number":25,"name":"Brahma","sum_longitude":324.7745},"karana":{"half_tithi_index":19,"name":"Gara"},"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":1980,"month":1,"day":27,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444265.770833,"ahargana":1855800.2708,"kali_year":5081,"ayanamsa_lahiri":23.5746,"grahas":{"sun":{"sidereal_longitude":282.6760300000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"moon":{"sidereal_longitude":43.46992999999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false,"latitude":-4.4988},"mars":{"sidereal_longitude":141.29552999999999,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":286.87253,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":134.89573000000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":319.94333000000006,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":152.90932999999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":130.7709,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":310.7709,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":"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":1,"day":27,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444265.770833,"kali_year":5081,"ahargana":1855800.2708,"sun":{"sidereal_longitude":282.7011,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":42.0734,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":119.3723,"elapsed_within_tithi_degrees":11.3723},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1,"moon_longitude":42.0734,"elapsed_within_degrees":2.0734},"yoga":{"number":25,"name":"Brahma","sum_longitude":324.7745},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.499,"elongation":119.372},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.499,"opposition_distance":60.628}},"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":"07:09","sunsetLocal":"17:55","solarNoonLocal":"12:32","dayLengthHours":10.776606916116814,"dayLengthDisplay":"10 Hours 46 Mins 36 Secs","nightLengthDisplay":"13 Hours 13 Mins 24 Secs","moonriseLocal":"13:45","moonsetLocal":"03:26","rahuKala":{"name":"Rāhu Kāla","start":"16:35","end":"17:55","startHours":16.576687685325126,"endHours":17.923763549839727,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:32","end":"13:53","startHours":12.53546009178132,"endHours":13.882535956295921,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:14","end":"16:35","startHours":15.229611820810524,"endHours":16.576687685325126,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.661698247483503,"endHours":10.02091847802073,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:36","end":"07:53","startHours":7.596181921894447,"endHours":7.883558106324228,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:11","end":"12:54","startHours":12.176239861244092,"endHours":12.894680322318546,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:43","end":"06:26","startHours":5.710275711574004,"endHours":6.428716172648459,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:15","end":"07:09","startHours":6.249106057379845,"endHours":7.147156633722913,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:20","end":"15:03","startHours":14.331561244467455,"endHours":15.05000170554191,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:43","end":"18:07","startHours":17.723763549839727,"endHours":18.123763549839726,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:55","end":"18:22","startHours":17.923763549839727,"endHours":18.37278883801126,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:40","end":"19:25","startHours":17.673763549839727,"endHours":19.423763549839727,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:11","end":"00:54","startHours":24.176239861244092,"endHours":24.894680322318543,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"07:09","end":"08:30","startHours":7.147156633722913,"endHours":8.494232498237515,"quality":"inauspicious"},{"name":"Chala","start":"08:30","end":"09:50","startHours":8.494232498237515,"endHours":9.841308362752116,"quality":"neutral"},{"name":"Labha","start":"09:50","end":"11:11","startHours":9.841308362752116,"endHours":11.188384227266718,"quality":"auspicious"},{"name":"Amṛta","start":"11:11","end":"12:32","startHours":11.188384227266718,"endHours":12.53546009178132,"quality":"auspicious"},{"name":"Kāla","start":"12:32","end":"13:53","startHours":12.53546009178132,"endHours":13.882535956295921,"quality":"inauspicious"},{"name":"Śubha","start":"13:53","end":"15:14","startHours":13.882535956295921,"endHours":15.229611820810524,"quality":"auspicious"},{"name":"Roga","start":"15:14","end":"16:35","startHours":15.229611820810524,"endHours":16.576687685325126,"quality":"inauspicious"},{"name":"Udveg","start":"16:35","end":"17:55","startHours":16.576687685325126,"endHours":17.923763549839727,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:55","end":"19:35","startHours":17.923763549839727,"endHours":19.576687685325126,"quality":"auspicious"},{"name":"Roga","start":"19:35","end":"21:14","startHours":19.576687685325126,"endHours":21.229611820810522,"quality":"inauspicious"},{"name":"Udveg","start":"21:14","end":"22:53","startHours":21.229611820810522,"endHours":22.88253595629592,"quality":"inauspicious"},{"name":"Chala","start":"22:53","end":"00:32","startHours":22.88253595629592,"endHours":24.53546009178132,"quality":"neutral"},{"name":"Labha","start":"00:32","end":"02:11","startHours":24.53546009178132,"endHours":26.188384227266717,"quality":"auspicious"},{"name":"Amṛta","start":"02:11","end":"03:50","startHours":26.188384227266717,"endHours":27.841308362752116,"quality":"auspicious"},{"name":"Kāla","start":"03:50","end":"05:30","startHours":27.841308362752116,"endHours":29.494232498237515,"quality":"inauspicious"},{"name":"Śubha","start":"05:30","end":"07:09","startHours":29.494232498237515,"endHours":31.147156633722915,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:09","end":"08:09","startHours":7.147156633722913,"endHours":8.147156633722913,"planetary_lord":"Sun"},{"name":"Hora 2","start":"08:09","end":"09:09","startHours":8.147156633722913,"endHours":9.147156633722913,"planetary_lord":"Mars"},{"name":"Hora 3","start":"09:09","end":"10:09","startHours":9.147156633722913,"endHours":10.147156633722913,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"10:09","end":"11:09","startHours":10.147156633722913,"endHours":11.147156633722913,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"11:09","end":"12:09","startHours":11.147156633722913,"endHours":12.147156633722913,"planetary_lord":"Moon"},{"name":"Hora 6","start":"12:09","end":"13:09","startHours":12.147156633722913,"endHours":13.147156633722913,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"13:09","end":"14:09","startHours":13.147156633722913,"endHours":14.147156633722913,"planetary_lord":"Venus"},{"name":"Hora 8","start":"14:09","end":"15:09","startHours":14.147156633722913,"endHours":15.147156633722913,"planetary_lord":"Sun"},{"name":"Hora 9","start":"15:09","end":"16:09","startHours":15.147156633722913,"endHours":16.147156633722915,"planetary_lord":"Mars"},{"name":"Hora 10","start":"16:09","end":"17:09","startHours":16.147156633722915,"endHours":17.147156633722915,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"17:09","end":"18:09","startHours":17.147156633722915,"endHours":18.147156633722915,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"18:09","end":"19:09","startHours":18.147156633722915,"endHours":19.147156633722915,"planetary_lord":"Moon"},{"name":"Hora 13","start":"19:09","end":"20:09","startHours":19.147156633722915,"endHours":20.147156633722915,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"20:09","end":"21:09","startHours":20.147156633722915,"endHours":21.147156633722915,"planetary_lord":"Venus"},{"name":"Hora 15","start":"21:09","end":"22:09","startHours":21.147156633722915,"endHours":22.147156633722915,"planetary_lord":"Sun"},{"name":"Hora 16","start":"22:09","end":"23:09","startHours":22.147156633722915,"endHours":23.147156633722915,"planetary_lord":"Mars"},{"name":"Hora 17","start":"23:09","end":"00:09","startHours":23.147156633722915,"endHours":24.147156633722915,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"00:09","end":"01:09","startHours":24.147156633722915,"endHours":25.147156633722915,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"01:09","end":"02:09","startHours":25.147156633722915,"endHours":26.147156633722915,"planetary_lord":"Moon"},{"name":"Hora 20","start":"02:09","end":"03:09","startHours":26.147156633722915,"endHours":27.147156633722915,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"03:09","end":"04:09","startHours":27.147156633722915,"endHours":28.147156633722915,"planetary_lord":"Venus"},{"name":"Hora 22","start":"04:09","end":"05:09","startHours":28.147156633722915,"endHours":29.147156633722915,"planetary_lord":"Sun"},{"name":"Hora 23","start":"05:09","end":"06:09","startHours":29.147156633722915,"endHours":30.147156633722915,"planetary_lord":"Mars"},{"name":"Hora 24","start":"06:09","end":"07:09","startHours":30.147156633722915,"endHours":31.147156633722915,"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":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-18.708082770599223,"eotMinutes":-12.76480550687915,"ayanamsa":23.5746}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Daśamī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"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":"vrindavan"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 27, 1980 CE · Vṛndāvana · Vidhyamitra","description":"January 27, 1980 CE for Vṛndāvana: Śukla Daśamī, sūryodaya 07:09, sūryāsta 17:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1980-01-27","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1980-01-27","sa":"https://sa.vidhyamitra.com/city/vrindavan/1980-01-27","hi":"https://hi.vidhyamitra.com/city/vrindavan/1980-01-27","x-default":"https://vidhyamitra.com/city/vrindavan/1980-01-27"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T15:21:46.605Z","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":"2026-06-01T15:21:46.606Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T15:21:46.606Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}