{"id":"vidhyamitra:city-day:howrah:1981-10-12:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/1981-10-12","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-10-12","date_display":"October 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":10,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444889.770833,"kali_year":5083,"ahargana":1856424.2708,"sun":{"sidereal_longitude":174.3388,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":333.8344,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":159.4956,"elapsed_within_tithi_degrees":3.4956},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":333.8344,"elapsed_within_degrees":0.5011},"yoga":{"number":12,"name":"Dhruva","sum_longitude":148.1732},"karana":{"half_tithi_index":26,"name":"Gara"},"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":10,"day":12,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444889.770833,"ahargana":1856424.2708,"kali_year":5083,"ayanamsa_lahiri":23.5985,"grahas":{"sun":{"sidereal_longitude":175.033589,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":334.638189,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false,"latitude":-3.735},"mars":{"sidereal_longitude":121.314889,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":188.73588900000004,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":177.045389,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":220.12308899999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":169.64748899999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":97.7084,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.7084,"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":10,"day":12,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444889.770833,"kali_year":5083,"ahargana":1856424.2708,"sun":{"sidereal_longitude":174.3388,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":333.8344,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":159.4956,"elapsed_within_tithi_degrees":3.4956},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1,"moon_longitude":333.8344,"elapsed_within_degrees":0.5011},"yoga":{"number":12,"name":"Dhruva","sum_longitude":148.1732},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.735,"elongation":159.496},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.735,"opposition_distance":20.504}},"eclipse_window_40days":[]},"city":{"slug":"howrah","name":"Howrah, West Bengal","lat":22.5958,"lon":88.2636,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"howrah","name":"Howrah, West Bengal","lat":22.5958,"lon":88.2636,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"sunriseLocal":"05:31","sunsetLocal":"17:14","solarNoonLocal":"11:23","dayLengthHours":11.713908492930706,"dayLengthDisplay":"11 Hours 42 Mins 50 Secs","nightLengthDisplay":"12 Hours 17 Mins 10 Secs","moonriseLocal":"16:00","moonsetLocal":"04:03","rahuKala":{"name":"Rāhu Kāla","start":"06:59","end":"08:27","startHours":6.98605320033132,"endHours":8.450291761947657,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:55","end":"11:23","startHours":9.914530323563996,"endHours":11.378768885180335,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:51","end":"14:18","startHours":12.843007446796673,"endHours":14.30724600841301,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:15","end":"08:39","startHours":8.255059953732147,"endHours":8.645523570163169,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:01","end":"06:19","startHours":6.0098941592537605,"endHours":6.3222650523985795,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"10:59","end":"11:46","startHours":10.988305268749311,"endHours":11.76923250161136,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:58","end":"04:44","startHours":3.959960172990887,"endHours":4.740887405852934,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:33","end":"05:31","startHours":4.545655597637422,"endHours":5.521814638714981,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:20","end":"14:07","startHours":13.331086967335452,"endHours":14.112014200197498,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:02","end":"17:26","startHours":17.03572313164569,"endHours":17.435723131645688,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:14","end":"17:43","startHours":17.23572313164569,"endHours":17.723802652184467,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:59","end":"18:44","startHours":16.98572313164569,"endHours":18.73572313164569,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"22:59","end":"23:46","startHours":22.98830526874931,"endHours":23.76923250161136,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:31","end":"06:59","startHours":5.521814638714981,"endHours":6.98605320033132,"quality":"auspicious"},{"name":"Kāla","start":"06:59","end":"08:27","startHours":6.98605320033132,"endHours":8.450291761947657,"quality":"inauspicious"},{"name":"Śubha","start":"08:27","end":"09:55","startHours":8.450291761947657,"endHours":9.914530323563996,"quality":"auspicious"},{"name":"Roga","start":"09:55","end":"11:23","startHours":9.914530323563996,"endHours":11.378768885180335,"quality":"inauspicious"},{"name":"Udveg","start":"11:23","end":"12:51","startHours":11.378768885180335,"endHours":12.843007446796673,"quality":"inauspicious"},{"name":"Chala","start":"12:51","end":"14:18","startHours":12.843007446796673,"endHours":14.30724600841301,"quality":"neutral"},{"name":"Labha","start":"14:18","end":"15:46","startHours":14.30724600841301,"endHours":15.771484570029351,"quality":"auspicious"},{"name":"Amṛta","start":"15:46","end":"17:14","startHours":15.771484570029351,"endHours":17.23572313164569,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:14","end":"18:46","startHours":17.23572313164569,"endHours":18.77148457002935,"quality":"neutral"},{"name":"Labha","start":"18:46","end":"20:18","startHours":18.77148457002935,"endHours":20.30724600841301,"quality":"auspicious"},{"name":"Amṛta","start":"20:18","end":"21:51","startHours":20.30724600841301,"endHours":21.843007446796673,"quality":"auspicious"},{"name":"Kāla","start":"21:51","end":"23:23","startHours":21.843007446796673,"endHours":23.378768885180335,"quality":"inauspicious"},{"name":"Śubha","start":"23:23","end":"00:55","startHours":23.378768885180335,"endHours":24.914530323563998,"quality":"auspicious"},{"name":"Roga","start":"00:55","end":"02:27","startHours":24.914530323563998,"endHours":26.45029176194766,"quality":"inauspicious"},{"name":"Udveg","start":"02:27","end":"03:59","startHours":26.45029176194766,"endHours":27.98605320033132,"quality":"inauspicious"},{"name":"Chala","start":"03:59","end":"05:31","startHours":27.98605320033132,"endHours":29.521814638714982,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:31","end":"06:31","startHours":5.521814638714981,"endHours":6.521814638714981,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:31","end":"07:31","startHours":6.521814638714981,"endHours":7.521814638714981,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:31","end":"08:31","startHours":7.521814638714981,"endHours":8.521814638714982,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:31","end":"09:31","startHours":8.521814638714982,"endHours":9.521814638714982,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:31","end":"10:31","startHours":9.521814638714982,"endHours":10.521814638714982,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:31","end":"11:31","startHours":10.521814638714982,"endHours":11.521814638714982,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:31","end":"12:31","startHours":11.521814638714982,"endHours":12.521814638714982,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:31","end":"13:31","startHours":12.521814638714982,"endHours":13.521814638714982,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:31","end":"14:31","startHours":13.521814638714982,"endHours":14.521814638714982,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:31","end":"15:31","startHours":14.521814638714982,"endHours":15.521814638714982,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:31","end":"16:31","startHours":15.521814638714982,"endHours":16.521814638714982,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:31","end":"17:31","startHours":16.521814638714982,"endHours":17.521814638714982,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:31","end":"18:31","startHours":17.521814638714982,"endHours":18.521814638714982,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:31","end":"19:31","startHours":18.521814638714982,"endHours":19.521814638714982,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:31","end":"20:31","startHours":19.521814638714982,"endHours":20.521814638714982,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:31","end":"21:31","startHours":20.521814638714982,"endHours":21.521814638714982,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:31","end":"22:31","startHours":21.521814638714982,"endHours":22.521814638714982,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:31","end":"23:31","startHours":22.521814638714982,"endHours":23.521814638714982,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:31","end":"00:31","startHours":23.521814638714982,"endHours":24.521814638714982,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:31","end":"01:31","startHours":24.521814638714982,"endHours":25.521814638714982,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:31","end":"02:31","startHours":25.521814638714982,"endHours":26.521814638714982,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:31","end":"03:31","startHours":26.521814638714982,"endHours":27.521814638714982,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:31","end":"04:31","startHours":27.521814638714982,"endHours":28.521814638714982,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:31","end":"05:31","startHours":28.521814638714982,"endHours":29.521814638714982,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-West","rahuVasa":"North-East","anandadiYoga":{"name":"Kāladaṇḍa","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-7.30040211532689,"eotMinutes":14.219466889179907,"ayanamsa":23.5985}},"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 Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","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 Śukla Caturdaśī · 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":"howrah"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 12, 1981 CE · Howrah, West Bengal · Vidhyamitra","description":"October 12, 1981 CE for Howrah, West Bengal: Śukla Caturdaśī, sūryodaya 05:31, sūryāsta 17:14.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/1981-10-12","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/1981-10-12","sa":"https://sa.vidhyamitra.com/city/howrah/1981-10-12","hi":"https://hi.vidhyamitra.com/city/howrah/1981-10-12","x-default":"https://vidhyamitra.com/city/howrah/1981-10-12"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:52:03.648Z","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":"2026-05-30T23:52:03.648Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:52:03.648Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}