{"id":"vidhyamitra:city-day:vrindavan:1980-01-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/1980-01-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-25","date_display":"January 25, 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":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444263.770833,"kali_year":5081,"ahargana":1855798.2708,"sun":{"sidereal_longitude":280.6529,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":14.2796,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":93.6267,"elapsed_within_tithi_degrees":9.6267},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":14.2796,"elapsed_within_degrees":0.9463},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.9325},"karana":{"half_tithi_index":15,"name":"Bava"},"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":1,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444263.770833,"ahargana":1855798.2708,"kali_year":5081,"ayanamsa_lahiri":23.5745,"grahas":{"sun":{"sidereal_longitude":280.642707,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"moon":{"sidereal_longitude":16.44460700000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false,"latitude":-4.023},"mars":{"sidereal_longitude":141.55210699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":283.435707,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":135.07880699999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":317.520207,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":152.97620699999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":130.8769,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":310.8769,"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":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444263.770833,"kali_year":5081,"ahargana":1855798.2708,"sun":{"sidereal_longitude":280.6529,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":14.2796,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":93.6267,"elapsed_within_tithi_degrees":9.6267},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1,"moon_longitude":14.2796,"elapsed_within_degrees":0.9463},"yoga":{"number":23,"name":"Śubha","sum_longitude":294.9325},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.023,"elongation":93.627},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.023,"opposition_distance":86.373}},"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":"07:10","sunsetLocal":"17:54","solarNoonLocal":"12:32","dayLengthHours":10.738104893719427,"dayLengthDisplay":"10 Hours 44 Mins 17 Secs","nightLengthDisplay":"13 Hours 15 Mins 43 Secs","moonriseLocal":"12:20","moonsetLocal":"01:29","rahuKala":{"name":"Rāhu Kāla","start":"11:11","end":"12:32","startHours":11.185595696984265,"endHours":12.527858808699193,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:13","end":"16:33","startHours":15.212385032129049,"endHours":16.554648143843977,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:30","end":"09:51","startHours":8.501069473554407,"endHours":9.843332585269335,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:40","end":"10:01","startHours":9.66436417037401,"endHours":10.02230100016466,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:36","end":"07:54","startHours":7.606227399077788,"endHours":7.892576862910306,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:53","startHours":12.169921978908544,"endHours":12.885795638489839,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:44","end":"06:27","startHours":5.727059042676888,"endHours":6.442932702258183,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:16","end":"07:10","startHours":6.263964287362859,"endHours":7.158806361839479,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:19","end":"15:02","startHours":14.31754295765243,"endHours":15.033416617233724,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:42","end":"18:06","startHours":17.696911255558906,"endHours":18.096911255558904,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:54","end":"18:21","startHours":17.896911255558905,"endHours":18.344332292797215,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:39","end":"19:24","startHours":17.646911255558905,"endHours":19.396911255558905,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:53","startHours":24.169921978908544,"endHours":24.885795638489842,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"07:10","end":"08:30","startHours":7.158806361839479,"endHours":8.501069473554407,"quality":"neutral"},{"name":"Labha","start":"08:30","end":"09:51","startHours":8.501069473554407,"endHours":9.843332585269335,"quality":"auspicious"},{"name":"Amṛta","start":"09:51","end":"11:11","startHours":9.843332585269335,"endHours":11.185595696984265,"quality":"auspicious"},{"name":"Kāla","start":"11:11","end":"12:32","startHours":11.185595696984265,"endHours":12.527858808699193,"quality":"inauspicious"},{"name":"Śubha","start":"12:32","end":"13:52","startHours":12.527858808699193,"endHours":13.870121920414121,"quality":"auspicious"},{"name":"Roga","start":"13:52","end":"15:13","startHours":13.870121920414121,"endHours":15.212385032129049,"quality":"inauspicious"},{"name":"Udveg","start":"15:13","end":"16:33","startHours":15.212385032129049,"endHours":16.554648143843977,"quality":"inauspicious"},{"name":"Chala","start":"16:33","end":"17:54","startHours":16.554648143843977,"endHours":17.896911255558905,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:54","end":"19:33","startHours":17.896911255558905,"endHours":19.554648143843977,"quality":"inauspicious"},{"name":"Udveg","start":"19:33","end":"21:13","startHours":19.554648143843977,"endHours":21.21238503212905,"quality":"inauspicious"},{"name":"Chala","start":"21:13","end":"22:52","startHours":21.21238503212905,"endHours":22.87012192041412,"quality":"neutral"},{"name":"Labha","start":"22:52","end":"00:32","startHours":22.87012192041412,"endHours":24.527858808699193,"quality":"auspicious"},{"name":"Amṛta","start":"00:32","end":"02:11","startHours":24.527858808699193,"endHours":26.185595696984265,"quality":"auspicious"},{"name":"Kāla","start":"02:11","end":"03:51","startHours":26.185595696984265,"endHours":27.843332585269334,"quality":"inauspicious"},{"name":"Śubha","start":"03:51","end":"05:30","startHours":27.843332585269334,"endHours":29.501069473554406,"quality":"auspicious"},{"name":"Roga","start":"05:30","end":"07:10","startHours":29.501069473554406,"endHours":31.158806361839478,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:10","end":"08:10","startHours":7.158806361839479,"endHours":8.158806361839478,"planetary_lord":"Venus"},{"name":"Hora 2","start":"08:10","end":"09:10","startHours":8.158806361839478,"endHours":9.158806361839478,"planetary_lord":"Sun"},{"name":"Hora 3","start":"09:10","end":"10:10","startHours":9.158806361839478,"endHours":10.158806361839478,"planetary_lord":"Mars"},{"name":"Hora 4","start":"10:10","end":"11:10","startHours":10.158806361839478,"endHours":11.158806361839478,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"11:10","end":"12:10","startHours":11.158806361839478,"endHours":12.158806361839478,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"12:10","end":"13:10","startHours":12.158806361839478,"endHours":13.158806361839478,"planetary_lord":"Moon"},{"name":"Hora 7","start":"13:10","end":"14:10","startHours":13.158806361839478,"endHours":14.158806361839478,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"14:10","end":"15:10","startHours":14.158806361839478,"endHours":15.158806361839478,"planetary_lord":"Venus"},{"name":"Hora 9","start":"15:10","end":"16:10","startHours":15.158806361839478,"endHours":16.158806361839478,"planetary_lord":"Sun"},{"name":"Hora 10","start":"16:10","end":"17:10","startHours":16.158806361839478,"endHours":17.158806361839478,"planetary_lord":"Mars"},{"name":"Hora 11","start":"17:10","end":"18:10","startHours":17.158806361839478,"endHours":18.158806361839478,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"18:10","end":"19:10","startHours":18.158806361839478,"endHours":19.158806361839478,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"19:10","end":"20:10","startHours":19.158806361839478,"endHours":20.158806361839478,"planetary_lord":"Moon"},{"name":"Hora 14","start":"20:10","end":"21:10","startHours":20.158806361839478,"endHours":21.158806361839478,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"21:10","end":"22:10","startHours":21.158806361839478,"endHours":22.158806361839478,"planetary_lord":"Venus"},{"name":"Hora 16","start":"22:10","end":"23:10","startHours":22.158806361839478,"endHours":23.158806361839478,"planetary_lord":"Sun"},{"name":"Hora 17","start":"23:10","end":"00:10","startHours":23.158806361839478,"endHours":24.158806361839478,"planetary_lord":"Mars"},{"name":"Hora 18","start":"00:10","end":"01:10","startHours":24.158806361839478,"endHours":25.158806361839478,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"01:10","end":"02:10","startHours":25.158806361839478,"endHours":26.158806361839478,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"02:10","end":"03:10","startHours":26.158806361839478,"endHours":27.158806361839478,"planetary_lord":"Moon"},{"name":"Hora 21","start":"03:10","end":"04:10","startHours":27.158806361839478,"endHours":28.158806361839478,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"04:10","end":"05:10","startHours":28.158806361839478,"endHours":29.158806361839478,"planetary_lord":"Venus"},{"name":"Hora 23","start":"05:10","end":"06:10","startHours":29.158806361839478,"endHours":30.158806361839478,"planetary_lord":"Sun"},{"name":"Hora 24","start":"06:10","end":"07:10","startHours":30.158806361839478,"endHours":31.158806361839478,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-19.201394936058897,"eotMinutes":-12.308728521951446,"ayanamsa":23.5745}},"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 Aṣṭamī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"id":"bhishma-ashtami","name":"Bhīṣmāṣṭamī","name_sanskrit":"भीष्माष्टमी","tradition":"Pan-Hindu","associated_deity":"Bhīṣma Pitāmaha","significance":"Bhīṣma's mahaprasthāna anniversary (Māgha Śukla 8); Bhīṣma-tarpaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":2,"sources":["Mahābhārata, Anuśāsana Parva"]}],"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":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","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 25, 1980 CE · Vṛndāvana · Vidhyamitra","description":"January 25, 1980 CE for Vṛndāvana: Śukla Aṣṭamī, sūryodaya 07:10, sūryāsta 17:54.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/1980-01-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/1980-01-25","sa":"https://sa.vidhyamitra.com/city/vrindavan/1980-01-25","hi":"https://hi.vidhyamitra.com/city/vrindavan/1980-01-25","x-default":"https://vidhyamitra.com/city/vrindavan/1980-01-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T22:24:48.103Z","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":"2026-06-01T22:24:48.103Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T22:24:48.103Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}