{"id":"vidhyamitra:city-day:dhanbad:1981-07-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dhanbad/1981-07-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-12","date_display":"July 12, 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":7,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444797.770833,"kali_year":5083,"ahargana":1856332.2708,"sun":{"sidereal_longitude":85.6572,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":206.3939,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":120.7367,"elapsed_within_tithi_degrees":0.7367},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":206.3939,"elapsed_within_degrees":6.3939},"yoga":{"number":22,"name":"Sādhya","sum_longitude":292.0511},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"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":7,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444797.770833,"ahargana":1856332.2708,"kali_year":5083,"ayanamsa_lahiri":23.5949,"grahas":{"sun":{"sidereal_longitude":86.02380399999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"moon":{"sidereal_longitude":208.21670399999994,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false,"latitude":4.3696},"mars":{"sidereal_longitude":62.35150399999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":65.84480400000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":159.983604,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":111.507904,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":160.24600399999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":102.583,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":282.583,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":7,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444797.770833,"kali_year":5083,"ahargana":1856332.2708,"sun":{"sidereal_longitude":85.6572,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":206.3939,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":120.7367,"elapsed_within_tithi_degrees":0.7367},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":206.3939,"elapsed_within_degrees":6.3939},"yoga":{"number":22,"name":"Sādhya","sum_longitude":292.0511},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.37,"elongation":120.737},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.37,"opposition_distance":59.263}},"eclipse_window_40days":[{"offset_days":5,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":19,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:04","sunsetLocal":"18:35","solarNoonLocal":"11:50","dayLengthHours":13.501771455188381,"dayLengthDisplay":"13 Hours 30 Mins 06 Secs","nightLengthDisplay":"10 Hours 29 Mins 54 Secs","moonriseLocal":"14:29","moonsetLocal":"01:28","rahuKala":{"name":"Rāhu Kāla","start":"16:53","end":"18:35","startHours":16.88845212781323,"endHours":18.576173559711776,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:50","end":"13:31","startHours":11.825287832117585,"endHours":13.513009264016134,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:12","end":"16:53","startHours":15.20073069591468,"endHours":16.88845212781323,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:13","end":"08:40","startHours":8.224815444067351,"endHours":8.67487449257363,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:38","end":"06:00","startHours":5.636975915156245,"endHours":5.997023153961268,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:23","end":"12:17","startHours":11.375228783611306,"endHours":12.275346880623864,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:16","end":"04:10","startHours":3.2741659104982777,"endHours":4.1742840075108365,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"03:57","end":"05:04","startHours":3.949254483257697,"endHours":5.074402104523395,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:05","end":"14:59","startHours":14.075583074648982,"endHours":14.975701171661541,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:23","end":"18:47","startHours":18.376173559711777,"endHours":18.776173559711776,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:35","end":"19:08","startHours":18.576173559711776,"endHours":19.138747370344625,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:20","end":"20:05","startHours":18.326173559711776,"endHours":20.076173559711776,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:23","end":"00:17","startHours":23.375228783611306,"endHours":24.275346880623864,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:04","end":"06:46","startHours":5.074402104523395,"endHours":6.762123536421943,"quality":"inauspicious"},{"name":"Chala","start":"06:46","end":"08:27","startHours":6.762123536421943,"endHours":8.449844968320491,"quality":"neutral"},{"name":"Labha","start":"08:27","end":"10:08","startHours":8.449844968320491,"endHours":10.137566400219038,"quality":"auspicious"},{"name":"Amṛta","start":"10:08","end":"11:50","startHours":10.137566400219038,"endHours":11.825287832117585,"quality":"auspicious"},{"name":"Kāla","start":"11:50","end":"13:31","startHours":11.825287832117585,"endHours":13.513009264016134,"quality":"inauspicious"},{"name":"Śubha","start":"13:31","end":"15:12","startHours":13.513009264016134,"endHours":15.20073069591468,"quality":"auspicious"},{"name":"Roga","start":"15:12","end":"16:53","startHours":15.20073069591468,"endHours":16.88845212781323,"quality":"inauspicious"},{"name":"Udveg","start":"16:53","end":"18:35","startHours":16.88845212781323,"endHours":18.576173559711776,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:35","end":"19:53","startHours":18.576173559711776,"endHours":19.888452127813228,"quality":"auspicious"},{"name":"Roga","start":"19:53","end":"21:12","startHours":19.888452127813228,"endHours":21.200730695914682,"quality":"inauspicious"},{"name":"Udveg","start":"21:12","end":"22:31","startHours":21.200730695914682,"endHours":22.513009264016134,"quality":"inauspicious"},{"name":"Chala","start":"22:31","end":"23:50","startHours":22.513009264016134,"endHours":23.825287832117585,"quality":"neutral"},{"name":"Labha","start":"23:50","end":"01:08","startHours":23.825287832117585,"endHours":25.137566400219036,"quality":"auspicious"},{"name":"Amṛta","start":"01:08","end":"02:27","startHours":25.137566400219036,"endHours":26.44984496832049,"quality":"auspicious"},{"name":"Kāla","start":"02:27","end":"03:46","startHours":26.44984496832049,"endHours":27.762123536421942,"quality":"inauspicious"},{"name":"Śubha","start":"03:46","end":"05:04","startHours":27.762123536421942,"endHours":29.074402104523394,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:04","end":"06:04","startHours":5.074402104523395,"endHours":6.074402104523395,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:04","end":"07:04","startHours":6.074402104523395,"endHours":7.074402104523395,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:04","end":"08:04","startHours":7.074402104523395,"endHours":8.074402104523395,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:04","end":"09:04","startHours":8.074402104523395,"endHours":9.074402104523395,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:04","end":"10:04","startHours":9.074402104523395,"endHours":10.074402104523395,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:04","end":"11:04","startHours":10.074402104523395,"endHours":11.074402104523395,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:04","end":"12:04","startHours":11.074402104523395,"endHours":12.074402104523395,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:04","end":"13:04","startHours":12.074402104523395,"endHours":13.074402104523395,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:04","end":"14:04","startHours":13.074402104523395,"endHours":14.074402104523395,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:04","end":"15:04","startHours":14.074402104523395,"endHours":15.074402104523395,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:04","end":"16:04","startHours":15.074402104523395,"endHours":16.074402104523394,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:04","end":"17:04","startHours":16.074402104523394,"endHours":17.074402104523394,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:04","end":"18:04","startHours":17.074402104523394,"endHours":18.074402104523394,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:04","end":"19:04","startHours":18.074402104523394,"endHours":19.074402104523394,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:04","end":"20:04","startHours":19.074402104523394,"endHours":20.074402104523394,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:04","end":"21:04","startHours":20.074402104523394,"endHours":21.074402104523394,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:04","end":"22:04","startHours":21.074402104523394,"endHours":22.074402104523394,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:04","end":"23:04","startHours":22.074402104523394,"endHours":23.074402104523394,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:04","end":"00:04","startHours":23.074402104523394,"endHours":24.074402104523394,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:04","end":"01:04","startHours":24.074402104523394,"endHours":25.074402104523394,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:04","end":"02:04","startHours":25.074402104523394,"endHours":26.074402104523394,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:04","end":"03:04","startHours":26.074402104523394,"endHours":27.074402104523394,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:04","end":"04:04","startHours":27.074402104523394,"endHours":28.074402104523394,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:04","end":"05:04","startHours":28.074402104523394,"endHours":29.074402104523394,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Grīṣma (Summer) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":22.002265527737418,"eotMinutes":-5.238869927055064,"ayanamsa":23.5949}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āṣāḍha","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"devshayani-ekadashi","name":"Devśayanī Ekādaśī","name_sanskrit":"देवशयनी एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Bhagavān Viṣṇu enters yoga-nidrā; Cāturmāsya begins.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Āṣāḍha"},"precedence":3},{"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":"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","relevance":0.5}]},"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 July 12, 1981 CE · Dhanbad, Jharkhand · Vidhyamitra","description":"July 12, 1981 CE for Dhanbad, Jharkhand: Śukla Ekādaśī, sūryodaya 05:04, sūryāsta 18:35.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dhanbad/1981-07-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dhanbad/1981-07-12","sa":"https://sa.vidhyamitra.com/city/dhanbad/1981-07-12","hi":"https://hi.vidhyamitra.com/city/dhanbad/1981-07-12","x-default":"https://vidhyamitra.com/city/dhanbad/1981-07-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T22:44:48.760Z","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":"2026-06-01T22:44:48.760Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T22:44:48.760Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}