{"id":"vidhyamitra:city-day:dhanbad:1981-09-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dhanbad/1981-09-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-09-18","date_display":"September 18, 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":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444865.770833,"kali_year":5083,"ahargana":1856400.2708,"sun":{"sidereal_longitude":150.7595,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":21.3068,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":230.5473,"elapsed_within_tithi_degrees":2.5473},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":21.3068,"elapsed_within_degrees":7.9735},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.0663},"karana":{"half_tithi_index":38,"name":"Kaulava"},"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":9,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444865.770833,"ahargana":1856400.2708,"kali_year":5083,"ayanamsa_lahiri":23.5975,"grahas":{"sun":{"sidereal_longitude":151.448106,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":24.311706000000015,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false,"latitude":-4.3961},"mars":{"sidereal_longitude":106.69640600000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":177.31030599999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":171.879006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"venus":{"sidereal_longitude":192.60840600000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":166.72120599999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":98.98,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":278.98,"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":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444865.770833,"kali_year":5083,"ahargana":1856400.2708,"sun":{"sidereal_longitude":150.7595,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":21.3068,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":20,"name":"Pañcamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pañcamī","elongation_degrees":230.5473,"elapsed_within_tithi_degrees":2.5473},"nakshatra":{"number":2,"name":"Bharaṇī","pada":3,"moon_longitude":21.3068,"elapsed_within_degrees":7.9735},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":172.0663},"karana":{"half_tithi_index":38,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.396,"elongation":129.453},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.396,"opposition_distance":50.547}},"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":"05:31","sunsetLocal":"17:45","solarNoonLocal":"11:38","dayLengthHours":12.237272231509344,"dayLengthDisplay":"12 Hours 14 Mins 14 Secs","nightLengthDisplay":"11 Hours 45 Mins 46 Secs","moonriseLocal":"20:35","moonsetLocal":"09:43","rahuKala":{"name":"Rāhu Kāla","start":"10:06","end":"11:38","startHours":10.098147268166759,"endHours":11.627806297105426,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:41","end":"16:13","startHours":14.687124354982764,"endHours":16.21678338392143,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:02","end":"08:34","startHours":7.038829210289423,"endHours":8.568488239228092,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:22","end":"08:46","startHours":8.364533702036269,"endHours":8.772442776419913,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:01","end":"06:21","startHours":6.019056524330311,"endHours":6.345383783837226,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:13","end":"12:02","startHours":11.219897222721782,"endHours":12.03571537148907,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:53","end":"04:42","startHours":3.8775338838161755,"endHours":4.693352032583466,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:29","end":"05:31","startHours":4.489397495391643,"endHours":5.509170181350755,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:40","end":"14:29","startHours":13.667351669023653,"endHours":14.483169817790943,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:33","end":"17:57","startHours":17.5464424128601,"endHours":17.946442412860097,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:45","end":"18:15","startHours":17.746442412860098,"endHours":18.256328755839654,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:30","end":"19:15","startHours":17.496442412860098,"endHours":19.246442412860098,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:13","end":"00:02","startHours":23.21989722272178,"endHours":24.035715371489072,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:31","end":"07:02","startHours":5.509170181350755,"endHours":7.038829210289423,"quality":"neutral"},{"name":"Labha","start":"07:02","end":"08:34","startHours":7.038829210289423,"endHours":8.568488239228092,"quality":"auspicious"},{"name":"Amṛta","start":"08:34","end":"10:06","startHours":8.568488239228092,"endHours":10.098147268166759,"quality":"auspicious"},{"name":"Kāla","start":"10:06","end":"11:38","startHours":10.098147268166759,"endHours":11.627806297105426,"quality":"inauspicious"},{"name":"Śubha","start":"11:38","end":"13:09","startHours":11.627806297105426,"endHours":13.157465326044095,"quality":"auspicious"},{"name":"Roga","start":"13:09","end":"14:41","startHours":13.157465326044095,"endHours":14.687124354982764,"quality":"inauspicious"},{"name":"Udveg","start":"14:41","end":"16:13","startHours":14.687124354982764,"endHours":16.21678338392143,"quality":"inauspicious"},{"name":"Chala","start":"16:13","end":"17:45","startHours":16.21678338392143,"endHours":17.746442412860098,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:45","end":"19:13","startHours":17.746442412860098,"endHours":19.21678338392143,"quality":"inauspicious"},{"name":"Udveg","start":"19:13","end":"20:41","startHours":19.21678338392143,"endHours":20.687124354982764,"quality":"inauspicious"},{"name":"Chala","start":"20:41","end":"22:09","startHours":20.687124354982764,"endHours":22.157465326044093,"quality":"neutral"},{"name":"Labha","start":"22:09","end":"23:38","startHours":22.157465326044093,"endHours":23.627806297105426,"quality":"auspicious"},{"name":"Amṛta","start":"23:38","end":"01:06","startHours":23.627806297105426,"endHours":25.09814726816676,"quality":"auspicious"},{"name":"Kāla","start":"01:06","end":"02:34","startHours":25.09814726816676,"endHours":26.56848823922809,"quality":"inauspicious"},{"name":"Śubha","start":"02:34","end":"04:02","startHours":26.56848823922809,"endHours":28.03882921028942,"quality":"auspicious"},{"name":"Roga","start":"04:02","end":"05:31","startHours":28.03882921028942,"endHours":29.509170181350754,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:31","end":"06:31","startHours":5.509170181350755,"endHours":6.509170181350755,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:31","end":"07:31","startHours":6.509170181350755,"endHours":7.509170181350755,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:31","end":"08:31","startHours":7.509170181350755,"endHours":8.509170181350754,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:31","end":"09:31","startHours":8.509170181350754,"endHours":9.509170181350754,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:31","end":"10:31","startHours":9.509170181350754,"endHours":10.509170181350754,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:31","end":"11:31","startHours":10.509170181350754,"endHours":11.509170181350754,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:31","end":"12:31","startHours":11.509170181350754,"endHours":12.509170181350754,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:31","end":"13:31","startHours":12.509170181350754,"endHours":13.509170181350754,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:31","end":"14:31","startHours":13.509170181350754,"endHours":14.509170181350754,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:31","end":"15:31","startHours":14.509170181350754,"endHours":15.509170181350754,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:31","end":"16:31","startHours":15.509170181350754,"endHours":16.509170181350754,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:31","end":"17:31","startHours":16.509170181350754,"endHours":17.509170181350754,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:31","end":"18:31","startHours":17.509170181350754,"endHours":18.509170181350754,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:31","end":"19:31","startHours":18.509170181350754,"endHours":19.509170181350754,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:31","end":"20:31","startHours":19.509170181350754,"endHours":20.509170181350754,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:31","end":"21:31","startHours":20.509170181350754,"endHours":21.509170181350754,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:31","end":"22:31","startHours":21.509170181350754,"endHours":22.509170181350754,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:31","end":"23:31","startHours":22.509170181350754,"endHours":23.509170181350754,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:31","end":"00:31","startHours":23.509170181350754,"endHours":24.509170181350754,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:31","end":"01:31","startHours":24.509170181350754,"endHours":25.509170181350754,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:31","end":"02:31","startHours":25.509170181350754,"endHours":26.509170181350754,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:31","end":"03:31","startHours":26.509170181350754,"endHours":27.509170181350754,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:31","end":"04:31","startHours":27.509170181350754,"endHours":28.509170181350754,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:31","end":"05:31","startHours":28.509170181350754,"endHours":29.509170181350754,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"East","rahuVasa":"South-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":1.968455806324778,"eotMinutes":6.610022173674397,"ayanamsa":23.5975}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Pañcamī · 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 September 18, 1981 CE · Dhanbad, Jharkhand · Vidhyamitra","description":"September 18, 1981 CE for Dhanbad, Jharkhand: Kṛṣṇa Pañcamī, sūryodaya 05:31, sūryāsta 17:45.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dhanbad/1981-09-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dhanbad/1981-09-18","sa":"https://sa.vidhyamitra.com/city/dhanbad/1981-09-18","hi":"https://hi.vidhyamitra.com/city/dhanbad/1981-09-18","x-default":"https://vidhyamitra.com/city/dhanbad/1981-09-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T19:27:28.685Z","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":"2026-06-02T19:27:28.685Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T19:27:28.685Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}