{"id":"vidhyamitra:city-day:dhanbad:1981-08-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dhanbad/1981-08-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-31","date_display":"August 31, 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":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444847.770833,"kali_year":5083,"ahargana":1856382.2708,"sun":{"sidereal_longitude":133.3218,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":152.7444,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":19.4225,"elapsed_within_tithi_degrees":7.4225},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.7444,"elapsed_within_degrees":6.0777},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.0662},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":1981,"month":8,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444847.770833,"ahargana":1856382.2708,"kali_year":5083,"ayanamsa_lahiri":23.5969,"grahas":{"sun":{"sidereal_longitude":133.96119399999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":151.03779399999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":3.5835},"mars":{"sidereal_longitude":95.357394,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":152.05609400000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":168.19969400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":171.47319399999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":164.63849400000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":99.9338,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":279.9338,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"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":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444847.770833,"kali_year":5083,"ahargana":1856382.2708,"sun":{"sidereal_longitude":133.3218,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":152.7444,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":19.4225,"elapsed_within_tithi_degrees":7.4225},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.7444,"elapsed_within_degrees":6.0777},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.0662},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.584,"elongation":19.423},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.584,"opposition_distance":160.577}},"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":"05:25","sunsetLocal":"18:03","solarNoonLocal":"11:44","dayLengthHours":12.641037777302156,"dayLengthDisplay":"12 Hours 38 Mins 28 Secs","nightLengthDisplay":"11 Hours 21 Mins 32 Secs","moonriseLocal":"06:46","moonsetLocal":"18:59","rahuKala":{"name":"Rāhu Kāla","start":"07:00","end":"08:35","startHours":6.995157674788569,"endHours":8.575287396951339,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:09","end":"11:44","startHours":10.155417119114107,"endHours":11.735546841276877,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:19","end":"14:54","startHours":13.315676563439647,"endHours":14.895806285602415,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:22","end":"08:47","startHours":8.364603433996303,"endHours":8.785971359906373,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:57","end":"06:17","startHours":5.941737860013388,"endHours":6.278832200741446,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:19","end":"12:09","startHours":11.314178915366805,"endHours":12.156914767186949,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:44","end":"04:34","startHours":3.7295562489855114,"endHours":4.572292100805655,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:22","end":"05:25","startHours":4.361608137850619,"endHours":5.415027952625799,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:51","end":"14:41","startHours":13.842386470827236,"endHours":14.68512232264738,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:51","end":"18:15","startHours":17.856065729927955,"endHours":18.256065729927954,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:03","end":"18:35","startHours":18.056065729927955,"endHours":18.582775637315546,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:48","end":"19:33","startHours":17.806065729927955,"endHours":19.556065729927955,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:19","end":"00:09","startHours":23.314178915366806,"endHours":24.15691476718695,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:25","end":"07:00","startHours":5.415027952625799,"endHours":6.995157674788569,"quality":"auspicious"},{"name":"Kāla","start":"07:00","end":"08:35","startHours":6.995157674788569,"endHours":8.575287396951339,"quality":"inauspicious"},{"name":"Śubha","start":"08:35","end":"10:09","startHours":8.575287396951339,"endHours":10.155417119114107,"quality":"auspicious"},{"name":"Roga","start":"10:09","end":"11:44","startHours":10.155417119114107,"endHours":11.735546841276877,"quality":"inauspicious"},{"name":"Udveg","start":"11:44","end":"13:19","startHours":11.735546841276877,"endHours":13.315676563439647,"quality":"inauspicious"},{"name":"Chala","start":"13:19","end":"14:54","startHours":13.315676563439647,"endHours":14.895806285602415,"quality":"neutral"},{"name":"Labha","start":"14:54","end":"16:29","startHours":14.895806285602415,"endHours":16.475936007765185,"quality":"auspicious"},{"name":"Amṛta","start":"16:29","end":"18:03","startHours":16.475936007765185,"endHours":18.056065729927955,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:03","end":"19:29","startHours":18.056065729927955,"endHours":19.475936007765185,"quality":"neutral"},{"name":"Labha","start":"19:29","end":"20:54","startHours":19.475936007765185,"endHours":20.895806285602415,"quality":"auspicious"},{"name":"Amṛta","start":"20:54","end":"22:19","startHours":20.895806285602415,"endHours":22.315676563439645,"quality":"auspicious"},{"name":"Kāla","start":"22:19","end":"23:44","startHours":22.315676563439645,"endHours":23.73554684127688,"quality":"inauspicious"},{"name":"Śubha","start":"23:44","end":"01:09","startHours":23.73554684127688,"endHours":25.155417119114105,"quality":"auspicious"},{"name":"Roga","start":"01:09","end":"02:35","startHours":25.155417119114105,"endHours":26.57528739695134,"quality":"inauspicious"},{"name":"Udveg","start":"02:35","end":"04:00","startHours":26.57528739695134,"endHours":27.99515767478857,"quality":"inauspicious"},{"name":"Chala","start":"04:00","end":"05:25","startHours":27.99515767478857,"endHours":29.4150279526258,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:25","end":"06:25","startHours":5.415027952625799,"endHours":6.415027952625799,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:25","end":"07:25","startHours":6.415027952625799,"endHours":7.415027952625799,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:25","end":"08:25","startHours":7.415027952625799,"endHours":8.415027952625799,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:25","end":"09:25","startHours":8.415027952625799,"endHours":9.415027952625799,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:25","end":"10:25","startHours":9.415027952625799,"endHours":10.415027952625799,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:25","end":"11:25","startHours":10.415027952625799,"endHours":11.415027952625799,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:25","end":"12:25","startHours":11.415027952625799,"endHours":12.415027952625799,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:25","end":"13:25","startHours":12.415027952625799,"endHours":13.415027952625799,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:25","end":"14:25","startHours":13.415027952625799,"endHours":14.415027952625799,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:25","end":"15:25","startHours":14.415027952625799,"endHours":15.415027952625799,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:25","end":"16:25","startHours":15.415027952625799,"endHours":16.4150279526258,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:25","end":"17:25","startHours":16.4150279526258,"endHours":17.4150279526258,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:25","end":"18:25","startHours":17.4150279526258,"endHours":18.4150279526258,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:25","end":"19:25","startHours":18.4150279526258,"endHours":19.4150279526258,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:25","end":"20:25","startHours":19.4150279526258,"endHours":20.4150279526258,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:25","end":"21:25","startHours":20.4150279526258,"endHours":21.4150279526258,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:25","end":"22:25","startHours":21.4150279526258,"endHours":22.4150279526258,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:25","end":"23:25","startHours":22.4150279526258,"endHours":23.4150279526258,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:25","end":"00:25","startHours":23.4150279526258,"endHours":24.4150279526258,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:25","end":"01:25","startHours":24.4150279526258,"endHours":25.4150279526258,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:25","end":"02:25","startHours":25.4150279526258,"endHours":26.4150279526258,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:25","end":"03:25","startHours":26.4150279526258,"endHours":27.4150279526258,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:25","end":"04:25","startHours":27.4150279526258,"endHours":28.4150279526258,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:25","end":"05:25","startHours":28.4150279526258,"endHours":29.4150279526258,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":8.733164765444263,"eotMinutes":0.14558952338733633,"ayanamsa":23.5969}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":"dhanbad"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 31, 1981 CE · Dhanbad, Jharkhand · Vidhyamitra","description":"August 31, 1981 CE for Dhanbad, Jharkhand: Śukla Dvitīyā, sūryodaya 05:25, sūryāsta 18:03.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dhanbad/1981-08-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dhanbad/1981-08-31","sa":"https://sa.vidhyamitra.com/city/dhanbad/1981-08-31","hi":"https://hi.vidhyamitra.com/city/dhanbad/1981-08-31","x-default":"https://vidhyamitra.com/city/dhanbad/1981-08-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T21:09:54.174Z","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":"2026-06-01T21:09:54.174Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T21:09:54.174Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}