{"id":"vidhyamitra:city-day:mathura:1981-05-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1981-05-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-17","date_display":"May 17, 1981 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":1981,"month":5,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444741.770833,"kali_year":5083,"ahargana":1856276.2708,"sun":{"sidereal_longitude":32.4819,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":190.456,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":157.9741,"elapsed_within_tithi_degrees":1.9741},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":190.456,"elapsed_within_degrees":3.7893},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":222.9378},"karana":{"half_tithi_index":26,"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":1981,"month":5,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444741.770833,"ahargana":1856276.2708,"kali_year":5083,"ayanamsa_lahiri":23.5928,"grahas":{"sun":{"sidereal_longitude":32.46864399999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":191.08174399999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false,"latitude":4.4822},"mars":{"sidereal_longitude":22.769744000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":52.35344399999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":157.19214399999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":43.10064399999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":159.47144400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":105.5501,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":285.5501,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":5,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444741.770833,"kali_year":5083,"ahargana":1856276.2708,"sun":{"sidereal_longitude":32.4819,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":190.456,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":157.9741,"elapsed_within_tithi_degrees":1.9741},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":190.456,"elapsed_within_degrees":3.7893},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":222.9378},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.482,"elongation":157.974},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.482,"opposition_distance":22.026}},"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":"05:30","sunsetLocal":"19:02","solarNoonLocal":"12:16","dayLengthHours":13.532550052347588,"dayLengthDisplay":"13 Hours 31 Mins 57 Secs","nightLengthDisplay":"10 Hours 28 Mins 03 Secs","moonriseLocal":"17:15","moonsetLocal":"04:25","rahuKala":{"name":"Rāhu Kāla","start":"17:20","end":"19:02","startHours":17.334444943063463,"endHours":19.02601369960691,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:16","end":"13:57","startHours":12.259738673433116,"endHours":13.951307429976566,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:39","end":"17:20","startHours":15.642876186520013,"endHours":17.334444943063463,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:06","startHours":8.65105865947376,"endHours":9.10214366121868,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:03","end":"06:25","startHours":6.057319899440472,"endHours":6.418187900836408,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:49","end":"12:43","startHours":11.808653671688196,"endHours":12.710823675178036,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:41","end":"04:35","startHours":3.6891236402796443,"endHours":4.591293643769483,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:22","end":"05:30","startHours":4.3657511428970235,"endHours":5.493463647259323,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:25","startHours":14.515163682157716,"endHours":15.417333685647556,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:50","end":"19:14","startHours":18.82601369960691,"endHours":19.22601369960691,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:02","end":"19:35","startHours":19.02601369960691,"endHours":19.58986995178806,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:47","end":"20:32","startHours":18.77601369960691,"endHours":20.52601369960691,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:49","end":"00:43","startHours":23.808653671688198,"endHours":24.710823675178034,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:30","end":"07:11","startHours":5.493463647259323,"endHours":7.185032403802771,"quality":"inauspicious"},{"name":"Chala","start":"07:11","end":"08:53","startHours":7.185032403802771,"endHours":8.876601160346219,"quality":"neutral"},{"name":"Labha","start":"08:53","end":"10:34","startHours":8.876601160346219,"endHours":10.56816991688967,"quality":"auspicious"},{"name":"Amṛta","start":"10:34","end":"12:16","startHours":10.56816991688967,"endHours":12.259738673433116,"quality":"auspicious"},{"name":"Kāla","start":"12:16","end":"13:57","startHours":12.259738673433116,"endHours":13.951307429976566,"quality":"inauspicious"},{"name":"Śubha","start":"13:57","end":"15:39","startHours":13.951307429976566,"endHours":15.642876186520013,"quality":"auspicious"},{"name":"Roga","start":"15:39","end":"17:20","startHours":15.642876186520013,"endHours":17.334444943063463,"quality":"inauspicious"},{"name":"Udveg","start":"17:20","end":"19:02","startHours":17.334444943063463,"endHours":19.02601369960691,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"19:02","end":"20:20","startHours":19.02601369960691,"endHours":20.33444494306346,"quality":"auspicious"},{"name":"Roga","start":"20:20","end":"21:39","startHours":20.33444494306346,"endHours":21.642876186520013,"quality":"inauspicious"},{"name":"Udveg","start":"21:39","end":"22:57","startHours":21.642876186520013,"endHours":22.951307429976566,"quality":"inauspicious"},{"name":"Chala","start":"22:57","end":"00:16","startHours":22.951307429976566,"endHours":24.259738673433116,"quality":"neutral"},{"name":"Labha","start":"00:16","end":"01:34","startHours":24.259738673433116,"endHours":25.568169916889666,"quality":"auspicious"},{"name":"Amṛta","start":"01:34","end":"02:53","startHours":25.568169916889666,"endHours":26.87660116034622,"quality":"auspicious"},{"name":"Kāla","start":"02:53","end":"04:11","startHours":26.87660116034622,"endHours":28.185032403802772,"quality":"inauspicious"},{"name":"Śubha","start":"04:11","end":"05:30","startHours":28.185032403802772,"endHours":29.493463647259322,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:30","end":"06:30","startHours":5.493463647259323,"endHours":6.493463647259323,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:30","end":"07:30","startHours":6.493463647259323,"endHours":7.493463647259323,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:30","end":"08:30","startHours":7.493463647259323,"endHours":8.493463647259322,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:30","end":"09:30","startHours":8.493463647259322,"endHours":9.493463647259322,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:30","end":"10:30","startHours":9.493463647259322,"endHours":10.493463647259322,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:30","end":"11:30","startHours":10.493463647259322,"endHours":11.493463647259322,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:30","end":"12:30","startHours":11.493463647259322,"endHours":12.493463647259322,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:30","end":"13:30","startHours":12.493463647259322,"endHours":13.493463647259322,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:30","end":"14:30","startHours":13.493463647259322,"endHours":14.493463647259322,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:30","end":"15:30","startHours":14.493463647259322,"endHours":15.493463647259322,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:30","end":"16:30","startHours":15.493463647259322,"endHours":16.493463647259322,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:30","end":"17:30","startHours":16.493463647259322,"endHours":17.493463647259322,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:30","end":"18:30","startHours":17.493463647259322,"endHours":18.493463647259322,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:30","end":"19:30","startHours":18.493463647259322,"endHours":19.493463647259322,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:30","end":"20:30","startHours":19.493463647259322,"endHours":20.493463647259322,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:30","end":"21:30","startHours":20.493463647259322,"endHours":21.493463647259322,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:30","end":"22:30","startHours":21.493463647259322,"endHours":22.493463647259322,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:30","end":"23:30","startHours":22.493463647259322,"endHours":23.493463647259322,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:30","end":"00:30","startHours":23.493463647259322,"endHours":24.493463647259322,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:30","end":"01:30","startHours":24.493463647259322,"endHours":25.493463647259322,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:30","end":"02:30","startHours":25.493463647259322,"endHours":26.493463647259322,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:30","end":"03:30","startHours":26.493463647259322,"endHours":27.493463647259322,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:30","end":"04:30","startHours":27.493463647259322,"endHours":28.493463647259322,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:30","end":"05:30","startHours":28.493463647259322,"endHours":29.493463647259322,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Lumba","quality":"Auspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":19.267165607125545,"eotMinutes":3.7208795940131294,"ayanamsa":23.5928}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Caturdaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5}],"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":[]},"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 May 17, 1981 CE · Mathurā · Vidhyamitra","description":"May 17, 1981 CE for Mathurā: Śukla Caturdaśī, sūryodaya 05:30, sūryāsta 19:02.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1981-05-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1981-05-17","sa":"https://sa.vidhyamitra.com/city/mathura/1981-05-17","hi":"https://hi.vidhyamitra.com/city/mathura/1981-05-17","x-default":"https://vidhyamitra.com/city/mathura/1981-05-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T16:31:10.387Z","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":"2026-05-14T16:31:10.387Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T16:31:10.387Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}