{"id":"vidhyamitra:city-day:howrah:1981-08-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/1981-08-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-11","date_display":"August 11, 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":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444827.770833,"kali_year":5083,"ahargana":1856362.2708,"sun":{"sidereal_longitude":114.1507,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":239.1597,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.009,"elapsed_within_tithi_degrees":5.009},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":239.1597,"elapsed_within_degrees":12.4931},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":353.3105},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444827.770833,"ahargana":1856362.2708,"kali_year":5083,"ayanamsa_lahiri":23.5961,"grahas":{"sun":{"sidereal_longitude":114.699858,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":240.13525800000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false,"latitude":2.9997},"mars":{"sidereal_longitude":82.41625799999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":115.82115799999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":164.47305800000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":147.66765799999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":162.573258,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":100.9935,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":280.9935,"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":8,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444827.770833,"kali_year":5083,"ahargana":1856362.2708,"sun":{"sidereal_longitude":114.1507,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":239.1597,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":125.009,"elapsed_within_tithi_degrees":5.009},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4,"moon_longitude":239.1597,"elapsed_within_degrees":12.4931},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":353.3105},"karana":{"half_tithi_index":20,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3,"elongation":125.009},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3,"opposition_distance":54.991}},"eclipse_window_40days":[{"offset_days":-11,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:12","sunsetLocal":"18:12","solarNoonLocal":"11:42","dayLengthHours":12.999956208701093,"dayLengthDisplay":"13 Hours 00 Mins 00 Secs","nightLengthDisplay":"11 Hours 00 Mins 00 Secs","moonriseLocal":"14:42","moonsetLocal":"01:25","rahuKala":{"name":"Rāhu Kāla","start":"14:57","end":"16:34","startHours":14.947530681039737,"endHours":16.572525207127374,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:27","end":"10:04","startHours":8.44755257668919,"endHours":10.072547102776827,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:42","end":"13:19","startHours":11.697541628864464,"endHours":13.3225361549521,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:14","end":"08:40","startHours":8.230886639877506,"endHours":8.664218513500876,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:44","end":"06:05","startHours":5.73922836654313,"endHours":6.085893865441825,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:16","end":"12:08","startHours":11.264209755241094,"endHours":12.130873502487834,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:28","end":"04:20","startHours":3.4642360300204382,"endHours":4.330899777267177,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:07","end":"05:12","startHours":4.114233840455492,"endHours":5.197563524513917,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:44","startHours":13.864200996981314,"endHours":14.730864744228054,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:00","end":"18:24","startHours":17.99751973321501,"endHours":18.39751973321501,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:12","end":"18:44","startHours":18.19751973321501,"endHours":18.739184575244224,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:57","end":"19:42","startHours":17.94751973321501,"endHours":19.69751973321501,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:16","end":"00:08","startHours":23.264209755241094,"endHours":24.130873502487834,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:12","end":"06:49","startHours":5.197563524513917,"endHours":6.822558050601554,"quality":"inauspicious"},{"name":"Udveg","start":"06:49","end":"08:27","startHours":6.822558050601554,"endHours":8.44755257668919,"quality":"inauspicious"},{"name":"Chala","start":"08:27","end":"10:04","startHours":8.44755257668919,"endHours":10.072547102776827,"quality":"neutral"},{"name":"Labha","start":"10:04","end":"11:42","startHours":10.072547102776827,"endHours":11.697541628864464,"quality":"auspicious"},{"name":"Amṛta","start":"11:42","end":"13:19","startHours":11.697541628864464,"endHours":13.3225361549521,"quality":"auspicious"},{"name":"Kāla","start":"13:19","end":"14:57","startHours":13.3225361549521,"endHours":14.947530681039737,"quality":"inauspicious"},{"name":"Śubha","start":"14:57","end":"16:34","startHours":14.947530681039737,"endHours":16.572525207127374,"quality":"auspicious"},{"name":"Roga","start":"16:34","end":"18:12","startHours":16.572525207127374,"endHours":18.19751973321501,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:12","end":"19:34","startHours":18.19751973321501,"endHours":19.572525207127374,"quality":"inauspicious"},{"name":"Śubha","start":"19:34","end":"20:57","startHours":19.572525207127374,"endHours":20.947530681039737,"quality":"auspicious"},{"name":"Roga","start":"20:57","end":"22:19","startHours":20.947530681039737,"endHours":22.3225361549521,"quality":"inauspicious"},{"name":"Udveg","start":"22:19","end":"23:42","startHours":22.3225361549521,"endHours":23.697541628864464,"quality":"inauspicious"},{"name":"Chala","start":"23:42","end":"01:04","startHours":23.697541628864464,"endHours":25.072547102776827,"quality":"neutral"},{"name":"Labha","start":"01:04","end":"02:27","startHours":25.072547102776827,"endHours":26.44755257668919,"quality":"auspicious"},{"name":"Amṛta","start":"02:27","end":"03:49","startHours":26.44755257668919,"endHours":27.822558050601554,"quality":"auspicious"},{"name":"Kāla","start":"03:49","end":"05:12","startHours":27.822558050601554,"endHours":29.197563524513917,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:12","end":"06:12","startHours":5.197563524513917,"endHours":6.197563524513917,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:12","end":"07:12","startHours":6.197563524513917,"endHours":7.197563524513917,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:12","end":"08:12","startHours":7.197563524513917,"endHours":8.197563524513917,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:12","end":"09:12","startHours":8.197563524513917,"endHours":9.197563524513917,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:12","end":"10:12","startHours":9.197563524513917,"endHours":10.197563524513917,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:12","end":"11:12","startHours":10.197563524513917,"endHours":11.197563524513917,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:12","end":"12:12","startHours":11.197563524513917,"endHours":12.197563524513917,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:12","end":"13:12","startHours":12.197563524513917,"endHours":13.197563524513917,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:12","end":"14:12","startHours":13.197563524513917,"endHours":14.197563524513917,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:12","end":"15:12","startHours":14.197563524513917,"endHours":15.197563524513917,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:12","end":"16:12","startHours":15.197563524513917,"endHours":16.197563524513917,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:12","end":"17:12","startHours":16.197563524513917,"endHours":17.197563524513917,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:12","end":"18:12","startHours":17.197563524513917,"endHours":18.197563524513917,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:12","end":"19:12","startHours":18.197563524513917,"endHours":19.197563524513917,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:12","end":"20:12","startHours":19.197563524513917,"endHours":20.197563524513917,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:12","end":"21:12","startHours":20.197563524513917,"endHours":21.197563524513917,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:12","end":"22:12","startHours":21.197563524513917,"endHours":22.197563524513917,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:12","end":"23:12","startHours":22.197563524513917,"endHours":23.197563524513917,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:12","end":"00:12","startHours":23.197563524513917,"endHours":24.197563524513917,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:12","end":"01:12","startHours":24.197563524513917,"endHours":25.197563524513917,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:12","end":"02:12","startHours":25.197563524513917,"endHours":26.197563524513917,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:12","end":"03:12","startHours":26.197563524513917,"endHours":27.197563524513917,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:12","end":"04:12","startHours":27.197563524513917,"endHours":28.197563524513917,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:12","end":"05:12","startHours":28.197563524513917,"endHours":29.197563524513917,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Cara","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":15.343462669645216,"eotMinutes":-4.906897731867799,"ayanamsa":23.5961}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"precedence":2},{"id":"pavitropana-ekadashi","name":"Pavitropanā Ekādaśī (Putradā)","name_sanskrit":"पवित्रोपना एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Confers son; pavitra (sacred thread) ceremony for Viṣṇu.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Śrāvaṇa"},"precedence":4},{"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":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Jyeṣṭhā","url":"/day/-3137-10-20","relevance":0.5}]},"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 August 11, 1981 CE · Howrah, West Bengal · Vidhyamitra","description":"August 11, 1981 CE for Howrah, West Bengal: Śukla Ekādaśī, sūryodaya 05:12, sūryāsta 18:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/1981-08-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/1981-08-11","sa":"https://sa.vidhyamitra.com/city/howrah/1981-08-11","hi":"https://hi.vidhyamitra.com/city/howrah/1981-08-11","x-default":"https://vidhyamitra.com/city/howrah/1981-08-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-19T10:17:28.040Z","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":"2026-05-19T10:17:28.040Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-19T10:17:28.040Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}