{"id":"vidhyamitra:city-day:dhanbad:1981-05-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dhanbad/1981-05-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-15","date_display":"May 15, 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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444739.770833,"kali_year":5083,"ahargana":1856274.2708,"sun":{"sidereal_longitude":30.5662,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":165.4217,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":134.8555,"elapsed_within_tithi_degrees":2.8555},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":165.4217,"elapsed_within_degrees":5.4217},"yoga":{"number":15,"name":"Vajra","sum_longitude":195.9879},"karana":{"half_tithi_index":22,"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":1981,"month":5,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444739.770833,"ahargana":1856274.2708,"kali_year":5083,"ayanamsa_lahiri":23.5927,"grahas":{"sun":{"sidereal_longitude":30.541020000000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":167.19792000000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false,"latitude":3.8869},"mars":{"sidereal_longitude":21.304419999999993,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":49.058220000000006,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":157.25941999999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":40.64262000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":159.53912000000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"rahu":{"sidereal_longitude":105.6561,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":285.6561,"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":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444739.770833,"kali_year":5083,"ahargana":1856274.2708,"sun":{"sidereal_longitude":30.5662,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":165.4217,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":134.8555,"elapsed_within_tithi_degrees":2.8555},"nakshatra":{"number":13,"name":"Hasta","pada":2,"moon_longitude":165.4217,"elapsed_within_degrees":5.4217},"yoga":{"number":15,"name":"Vajra","sum_longitude":195.9879},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.887,"elongation":134.855},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.887,"opposition_distance":45.145}},"eclipse_window_40days":[]},"city":{"slug":"dhanbad","name":"Dhanbad, Jharkhand","lat":23.7957,"lon":86.4304,"tz_offset_hours":5.5,"state":"Jharkhand","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"dhanbad","name":"Dhanbad, Jharkhand","lat":23.7957,"lon":86.4304,"tz_offset_hours":5.5,"state":"Jharkhand","country":"IN","tier":"tier-1"},"sunriseLocal":"05:02","sunsetLocal":"18:19","solarNoonLocal":"11:41","dayLengthHours":13.281228201691889,"dayLengthDisplay":"13 Hours 16 Mins 52 Secs","nightLengthDisplay":"10 Hours 43 Mins 08 Secs","moonriseLocal":"14:52","moonsetLocal":"02:42","rahuKala":{"name":"Rāhu Kāla","start":"10:01","end":"11:41","startHours":10.015216459189745,"endHours":11.675369984401232,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:00","end":"16:39","startHours":14.995677034824205,"endHours":16.65583056003569,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:42","end":"08:21","startHours":6.694909408766773,"endHours":8.35506293397826,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:08","end":"08:35","startHours":8.133709130616728,"endHours":8.576416737339791,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:35","end":"05:57","startHours":5.588140391959116,"endHours":5.942306477337566,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:14","end":"12:07","startHours":11.232662377678169,"endHours":12.118077591124296,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:16","end":"04:09","startHours":3.2639254566630354,"endHours":4.1493406701091615,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:56","end":"05:02","startHours":3.92798686674763,"endHours":5.034755883555287,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:53","end":"14:46","startHours":13.888908018016547,"endHours":14.774323231462674,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:07","end":"18:31","startHours":18.115984085247177,"endHours":18.515984085247176,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:19","end":"18:52","startHours":18.315984085247177,"endHours":18.869368593651004,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:04","end":"19:49","startHours":18.065984085247177,"endHours":19.815984085247177,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:14","end":"00:07","startHours":23.23266237767817,"endHours":24.118077591124294,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:02","end":"06:42","startHours":5.034755883555287,"endHours":6.694909408766773,"quality":"neutral"},{"name":"Labha","start":"06:42","end":"08:21","startHours":6.694909408766773,"endHours":8.35506293397826,"quality":"auspicious"},{"name":"Amṛta","start":"08:21","end":"10:01","startHours":8.35506293397826,"endHours":10.015216459189745,"quality":"auspicious"},{"name":"Kāla","start":"10:01","end":"11:41","startHours":10.015216459189745,"endHours":11.675369984401232,"quality":"inauspicious"},{"name":"Śubha","start":"11:41","end":"13:20","startHours":11.675369984401232,"endHours":13.335523509612717,"quality":"auspicious"},{"name":"Roga","start":"13:20","end":"15:00","startHours":13.335523509612717,"endHours":14.995677034824205,"quality":"inauspicious"},{"name":"Udveg","start":"15:00","end":"16:39","startHours":14.995677034824205,"endHours":16.65583056003569,"quality":"inauspicious"},{"name":"Chala","start":"16:39","end":"18:19","startHours":16.65583056003569,"endHours":18.315984085247177,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:19","end":"19:39","startHours":18.315984085247177,"endHours":19.65583056003569,"quality":"inauspicious"},{"name":"Udveg","start":"19:39","end":"21:00","startHours":19.65583056003569,"endHours":20.995677034824205,"quality":"inauspicious"},{"name":"Chala","start":"21:00","end":"22:20","startHours":20.995677034824205,"endHours":22.33552350961272,"quality":"neutral"},{"name":"Labha","start":"22:20","end":"23:41","startHours":22.33552350961272,"endHours":23.675369984401232,"quality":"auspicious"},{"name":"Amṛta","start":"23:41","end":"01:01","startHours":23.675369984401232,"endHours":25.015216459189745,"quality":"auspicious"},{"name":"Kāla","start":"01:01","end":"02:21","startHours":25.015216459189745,"endHours":26.35506293397826,"quality":"inauspicious"},{"name":"Śubha","start":"02:21","end":"03:42","startHours":26.35506293397826,"endHours":27.694909408766776,"quality":"auspicious"},{"name":"Roga","start":"03:42","end":"05:02","startHours":27.694909408766776,"endHours":29.034755883555288,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:02","end":"06:02","startHours":5.034755883555287,"endHours":6.034755883555287,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:02","end":"07:02","startHours":6.034755883555287,"endHours":7.034755883555287,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:02","end":"08:02","startHours":7.034755883555287,"endHours":8.034755883555288,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:02","end":"09:02","startHours":8.034755883555288,"endHours":9.034755883555288,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:02","end":"10:02","startHours":9.034755883555288,"endHours":10.034755883555288,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:02","end":"11:02","startHours":10.034755883555288,"endHours":11.034755883555288,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:02","end":"12:02","startHours":11.034755883555288,"endHours":12.034755883555288,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:02","end":"13:02","startHours":12.034755883555288,"endHours":13.034755883555288,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:02","end":"14:02","startHours":13.034755883555288,"endHours":14.034755883555288,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:02","end":"15:02","startHours":14.034755883555288,"endHours":15.034755883555288,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:02","end":"16:02","startHours":15.034755883555288,"endHours":16.034755883555288,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:02","end":"17:02","startHours":16.034755883555288,"endHours":17.034755883555288,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:02","end":"18:02","startHours":17.034755883555288,"endHours":18.034755883555288,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:02","end":"19:02","startHours":18.034755883555288,"endHours":19.034755883555288,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:02","end":"20:02","startHours":19.034755883555288,"endHours":20.034755883555288,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:02","end":"21:02","startHours":20.034755883555288,"endHours":21.034755883555288,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:02","end":"22:02","startHours":21.034755883555288,"endHours":22.034755883555288,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:02","end":"23:02","startHours":22.034755883555288,"endHours":23.034755883555288,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:02","end":"00:02","startHours":23.034755883555288,"endHours":24.034755883555288,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:02","end":"01:02","startHours":24.034755883555288,"endHours":25.034755883555288,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:02","end":"02:02","startHours":25.034755883555288,"endHours":26.034755883555288,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:02","end":"03:02","startHours":26.034755883555288,"endHours":27.034755883555288,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:02","end":"04:02","startHours":27.034755883555288,"endHours":28.034755883555288,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:02","end":"05:02","startHours":28.034755883555288,"endHours":29.034755883555288,"planetary_lord":"Mars"}],"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":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"South-East","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.803108563939258,"eotMinutes":3.7562009359260493,"ayanamsa":23.5927}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Dvādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":[]},"validity":{"eternal":false,"location_specific":"dhanbad"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 15, 1981 CE · Dhanbad, Jharkhand · Vidhyamitra","description":"May 15, 1981 CE for Dhanbad, Jharkhand: Śukla Dvādaśī, sūryodaya 05:02, sūryāsta 18:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dhanbad/1981-05-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dhanbad/1981-05-15","sa":"https://sa.vidhyamitra.com/city/dhanbad/1981-05-15","hi":"https://hi.vidhyamitra.com/city/dhanbad/1981-05-15","x-default":"https://vidhyamitra.com/city/dhanbad/1981-05-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T22:47:11.969Z","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":"2026-06-01T22:47:11.969Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T22:47:11.969Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}