{"id":"vidhyamitra:city-day:mathura:1980-01-28:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1980-01-28","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-28","date_display":"January 28, 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":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444266.770833,"kali_year":5081,"ahargana":1855801.2708,"sun":{"sidereal_longitude":283.7247,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":55.6999,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":131.9752,"elapsed_within_tithi_degrees":11.9752},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":55.6999,"elapsed_within_degrees":2.3665},"yoga":{"number":26,"name":"Indra","sum_longitude":339.4246},"karana":{"half_tithi_index":21,"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":1,"day":28,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444266.770833,"ahargana":1855801.2708,"kali_year":5081,"ayanamsa_lahiri":23.5746,"grahas":{"sun":{"sidereal_longitude":283.69229199999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":56.661092,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false,"latitude":-4.3467},"mars":{"sidereal_longitude":141.14739199999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":288.604192,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":134.80049199999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":321.153192,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":152.87339199999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":130.7179,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":310.7179,"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":28,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444266.770833,"kali_year":5081,"ahargana":1855801.2708,"sun":{"sidereal_longitude":283.7247,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":55.6999,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":131.9752,"elapsed_within_tithi_degrees":11.9752},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":1,"moon_longitude":55.6999,"elapsed_within_degrees":2.3665},"yoga":{"number":26,"name":"Indra","sum_longitude":339.4246},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.347,"elongation":131.975},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.347,"opposition_distance":48.025}},"eclipse_window_40days":[]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:08","sunsetLocal":"17:56","solarNoonLocal":"12:32","dayLengthHours":10.80049785312384,"dayLengthDisplay":"10 Hours 48 Mins 02 Secs","nightLengthDisplay":"13 Hours 11 Mins 58 Secs","moonriseLocal":"14:30","moonsetLocal":"04:18","rahuKala":{"name":"Rāhu Kāla","start":"08:29","end":"09:50","startHours":8.487810505659658,"endHours":9.837872737300138,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:11","end":"12:32","startHours":11.187934968940617,"endHours":12.5379972005811,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:53","end":"15:14","startHours":13.888059432221578,"endHours":15.238121663862056,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"10:01","startHours":9.657864439748074,"endHours":10.017881034852202,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:35","end":"07:53","startHours":7.587769017899339,"endHours":7.875782293982641,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:11","end":"12:54","startHours":12.17798060547697,"endHours":12.898013795685225,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:42","end":"06:25","startHours":5.697681893602667,"endHours":6.417715083810922,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:14","end":"07:08","startHours":6.237706786258858,"endHours":7.137748274019178,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:20","end":"15:03","startHours":14.338080176101737,"endHours":15.058113366309993,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:44","end":"18:08","startHours":17.738246127143018,"endHours":18.138246127143017,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:56","end":"18:23","startHours":17.938246127143017,"endHours":18.388266871023177,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:41","end":"19:26","startHours":17.688246127143017,"endHours":19.438246127143017,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:11","end":"00:54","startHours":24.177980605476968,"endHours":24.898013795685223,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"07:08","end":"08:29","startHours":7.137748274019178,"endHours":8.487810505659658,"quality":"auspicious"},{"name":"Kāla","start":"08:29","end":"09:50","startHours":8.487810505659658,"endHours":9.837872737300138,"quality":"inauspicious"},{"name":"Śubha","start":"09:50","end":"11:11","startHours":9.837872737300138,"endHours":11.187934968940617,"quality":"auspicious"},{"name":"Roga","start":"11:11","end":"12:32","startHours":11.187934968940617,"endHours":12.5379972005811,"quality":"inauspicious"},{"name":"Udveg","start":"12:32","end":"13:53","startHours":12.5379972005811,"endHours":13.888059432221578,"quality":"inauspicious"},{"name":"Chala","start":"13:53","end":"15:14","startHours":13.888059432221578,"endHours":15.238121663862056,"quality":"neutral"},{"name":"Labha","start":"15:14","end":"16:35","startHours":15.238121663862056,"endHours":16.58818389550254,"quality":"auspicious"},{"name":"Amṛta","start":"16:35","end":"17:56","startHours":16.58818389550254,"endHours":17.938246127143017,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:56","end":"19:35","startHours":17.938246127143017,"endHours":19.58818389550254,"quality":"neutral"},{"name":"Labha","start":"19:35","end":"21:14","startHours":19.58818389550254,"endHours":21.238121663862056,"quality":"auspicious"},{"name":"Amṛta","start":"21:14","end":"22:53","startHours":21.238121663862056,"endHours":22.888059432221578,"quality":"auspicious"},{"name":"Kāla","start":"22:53","end":"00:32","startHours":22.888059432221578,"endHours":24.537997200581096,"quality":"inauspicious"},{"name":"Śubha","start":"00:32","end":"02:11","startHours":24.537997200581096,"endHours":26.187934968940617,"quality":"auspicious"},{"name":"Roga","start":"02:11","end":"03:50","startHours":26.187934968940617,"endHours":27.83787273730014,"quality":"inauspicious"},{"name":"Udveg","start":"03:50","end":"05:29","startHours":27.83787273730014,"endHours":29.48781050565966,"quality":"inauspicious"},{"name":"Chala","start":"05:29","end":"07:08","startHours":29.48781050565966,"endHours":31.137748274019177,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"07:08","end":"08:08","startHours":7.137748274019178,"endHours":8.137748274019177,"planetary_lord":"Moon"},{"name":"Hora 2","start":"08:08","end":"09:08","startHours":8.137748274019177,"endHours":9.137748274019177,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"09:08","end":"10:08","startHours":9.137748274019177,"endHours":10.137748274019177,"planetary_lord":"Venus"},{"name":"Hora 4","start":"10:08","end":"11:08","startHours":10.137748274019177,"endHours":11.137748274019177,"planetary_lord":"Sun"},{"name":"Hora 5","start":"11:08","end":"12:08","startHours":11.137748274019177,"endHours":12.137748274019177,"planetary_lord":"Mars"},{"name":"Hora 6","start":"12:08","end":"13:08","startHours":12.137748274019177,"endHours":13.137748274019177,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"13:08","end":"14:08","startHours":13.137748274019177,"endHours":14.137748274019177,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"14:08","end":"15:08","startHours":14.137748274019177,"endHours":15.137748274019177,"planetary_lord":"Moon"},{"name":"Hora 9","start":"15:08","end":"16:08","startHours":15.137748274019177,"endHours":16.137748274019177,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"16:08","end":"17:08","startHours":16.137748274019177,"endHours":17.137748274019177,"planetary_lord":"Venus"},{"name":"Hora 11","start":"17:08","end":"18:08","startHours":17.137748274019177,"endHours":18.137748274019177,"planetary_lord":"Sun"},{"name":"Hora 12","start":"18:08","end":"19:08","startHours":18.137748274019177,"endHours":19.137748274019177,"planetary_lord":"Mars"},{"name":"Hora 13","start":"19:08","end":"20:08","startHours":19.137748274019177,"endHours":20.137748274019177,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"20:08","end":"21:08","startHours":20.137748274019177,"endHours":21.137748274019177,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"21:08","end":"22:08","startHours":21.137748274019177,"endHours":22.137748274019177,"planetary_lord":"Moon"},{"name":"Hora 16","start":"22:08","end":"23:08","startHours":22.137748274019177,"endHours":23.137748274019177,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"23:08","end":"00:08","startHours":23.137748274019177,"endHours":24.137748274019177,"planetary_lord":"Venus"},{"name":"Hora 18","start":"00:08","end":"01:08","startHours":24.137748274019177,"endHours":25.137748274019177,"planetary_lord":"Sun"},{"name":"Hora 19","start":"01:08","end":"02:08","startHours":25.137748274019177,"endHours":26.137748274019177,"planetary_lord":"Mars"},{"name":"Hora 20","start":"02:08","end":"03:08","startHours":26.137748274019177,"endHours":27.137748274019177,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"03:08","end":"04:08","startHours":27.137748274019177,"endHours":28.137748274019177,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"04:08","end":"05:08","startHours":28.137748274019177,"endHours":29.137748274019177,"planetary_lord":"Moon"},{"name":"Hora 23","start":"05:08","end":"06:08","startHours":29.137748274019177,"endHours":30.137748274019177,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"06:08","end":"07:08","startHours":30.137748274019177,"endHours":31.137748274019177,"planetary_lord":"Venus"}],"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":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Vajra","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-18.45289186702967,"eotMinutes":-12.974632034865841,"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","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Ekādaśī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"id":"jaya-ekadashi","name":"Jayā Ekādaśī","name_sanskrit":"जया एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Removes pretatva (ghost-state); grants victory.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Māgha"},"precedence":4},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5}],"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":"mathura"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 28, 1980 CE · Mathurā · Vidhyamitra","description":"January 28, 1980 CE for Mathurā: Śukla Ekādaśī, sūryodaya 07:08, sūryāsta 17:56.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1980-01-28","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1980-01-28","sa":"https://sa.vidhyamitra.com/city/mathura/1980-01-28","hi":"https://hi.vidhyamitra.com/city/mathura/1980-01-28","x-default":"https://vidhyamitra.com/city/mathura/1980-01-28"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T13:42:49.585Z","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":"2026-05-14T13:42:49.585Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T13:42:49.585Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}