{"id":"vidhyamitra:city-day:howrah:2121-08-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/2121-08-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2121-08-20","date_display":"August 20, 2121 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":2121,"month":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2495970.770833,"kali_year":5223,"ahargana":1907505.2708,"sun":{"sidereal_longitude":120.6235,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":198.8331,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":78.2096,"elapsed_within_tithi_degrees":6.2096},"nakshatra":{"number":15,"name":"Svātī","pada":4,"moon_longitude":198.8331,"elapsed_within_degrees":12.1665},"yoga":{"number":24,"name":"Śukla","sum_longitude":319.4566},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2121,"month":8,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2495970.770833,"ahargana":1907505.2708,"kali_year":5223,"ayanamsa_lahiri":25.5521,"grahas":{"sun":{"sidereal_longitude":121.54701899999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":195.584119,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false,"latitude":-4.288},"mars":{"sidereal_longitude":170.188219,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":147.136619,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":107.45841899999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":92.135019,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":77.354219,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":271.1912,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":91.1912,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","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":2121,"month":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2495970.770833,"kali_year":5223,"ahargana":1907505.2708,"sun":{"sidereal_longitude":120.6235,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":198.8331,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":78.2096,"elapsed_within_tithi_degrees":6.2096},"nakshatra":{"number":15,"name":"Svātī","pada":4,"moon_longitude":198.8331,"elapsed_within_degrees":12.1665},"yoga":{"number":24,"name":"Śukla","sum_longitude":319.4566},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.288,"elongation":78.21},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.288,"opposition_distance":101.79}},"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":"05:15","sunsetLocal":"18:05","solarNoonLocal":"11:40","dayLengthHours":12.82831593704699,"dayLengthDisplay":"12 Hours 49 Mins 42 Secs","nightLengthDisplay":"11 Hours 10 Mins 18 Secs","moonriseLocal":"10:59","moonsetLocal":"22:13","rahuKala":{"name":"Rāhu Kāla","start":"11:40","end":"13:16","startHours":11.666593515175503,"endHours":13.270133007306375,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:51","end":"08:28","startHours":6.855975038782881,"endHours":8.459514530913754,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:04","end":"11:40","startHours":10.063054023044629,"endHours":11.666593515175503,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:15","end":"08:40","startHours":8.245709265296306,"endHours":8.673319796531205,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:47","end":"06:08","startHours":5.786948710695632,"endHours":6.129037135683552,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:14","end":"12:06","startHours":11.238982983940604,"endHours":12.094204046410402,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:24","startHours":3.5419934217124087,"endHours":4.397214484182208,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:11","end":"05:15","startHours":4.1834092185647584,"endHours":5.252435546652007,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:48","end":"14:40","startHours":13.804646171349999,"endHours":14.659867233819798,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:53","end":"18:17","startHours":17.880751483698997,"endHours":18.280751483698996,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:05","end":"18:37","startHours":18.080751483698997,"endHours":18.61526464774262,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:50","end":"19:35","startHours":17.830751483698997,"endHours":19.580751483698997,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:14","end":"00:06","startHours":23.238982983940602,"endHours":24.094204046410404,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:15","end":"06:51","startHours":5.252435546652007,"endHours":6.855975038782881,"quality":"auspicious"},{"name":"Amṛta","start":"06:51","end":"08:28","startHours":6.855975038782881,"endHours":8.459514530913754,"quality":"auspicious"},{"name":"Kāla","start":"08:28","end":"10:04","startHours":8.459514530913754,"endHours":10.063054023044629,"quality":"inauspicious"},{"name":"Śubha","start":"10:04","end":"11:40","startHours":10.063054023044629,"endHours":11.666593515175503,"quality":"auspicious"},{"name":"Roga","start":"11:40","end":"13:16","startHours":11.666593515175503,"endHours":13.270133007306375,"quality":"inauspicious"},{"name":"Udveg","start":"13:16","end":"14:52","startHours":13.270133007306375,"endHours":14.87367249943725,"quality":"inauspicious"},{"name":"Chala","start":"14:52","end":"16:29","startHours":14.87367249943725,"endHours":16.477211991568122,"quality":"neutral"},{"name":"Labha","start":"16:29","end":"18:05","startHours":16.477211991568122,"endHours":18.080751483698997,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:05","end":"19:29","startHours":18.080751483698997,"endHours":19.477211991568122,"quality":"inauspicious"},{"name":"Chala","start":"19:29","end":"20:52","startHours":19.477211991568122,"endHours":20.873672499437248,"quality":"neutral"},{"name":"Labha","start":"20:52","end":"22:16","startHours":20.873672499437248,"endHours":22.270133007306377,"quality":"auspicious"},{"name":"Amṛta","start":"22:16","end":"23:40","startHours":22.270133007306377,"endHours":23.666593515175503,"quality":"auspicious"},{"name":"Kāla","start":"23:40","end":"01:04","startHours":23.666593515175503,"endHours":25.06305402304463,"quality":"inauspicious"},{"name":"Śubha","start":"01:04","end":"02:28","startHours":25.06305402304463,"endHours":26.459514530913754,"quality":"auspicious"},{"name":"Roga","start":"02:28","end":"03:51","startHours":26.459514530913754,"endHours":27.85597503878288,"quality":"inauspicious"},{"name":"Udveg","start":"03:51","end":"05:15","startHours":27.85597503878288,"endHours":29.25243554665201,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:15","end":"06:15","startHours":5.252435546652007,"endHours":6.252435546652007,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:15","end":"07:15","startHours":6.252435546652007,"endHours":7.252435546652007,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:15","end":"08:15","startHours":7.252435546652007,"endHours":8.252435546652007,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:15","end":"09:15","startHours":8.252435546652007,"endHours":9.252435546652007,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:15","end":"10:15","startHours":9.252435546652007,"endHours":10.252435546652007,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:15","end":"11:15","startHours":10.252435546652007,"endHours":11.252435546652007,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:15","end":"12:15","startHours":11.252435546652007,"endHours":12.252435546652007,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:15","end":"13:15","startHours":12.252435546652007,"endHours":13.252435546652007,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:15","end":"14:15","startHours":13.252435546652007,"endHours":14.252435546652007,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:15","end":"15:15","startHours":14.252435546652007,"endHours":15.252435546652007,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:15","end":"16:15","startHours":15.252435546652007,"endHours":16.25243554665201,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:15","end":"17:15","startHours":16.25243554665201,"endHours":17.25243554665201,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:15","end":"18:15","startHours":17.25243554665201,"endHours":18.25243554665201,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:15","end":"19:15","startHours":18.25243554665201,"endHours":19.25243554665201,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:15","end":"20:15","startHours":19.25243554665201,"endHours":20.25243554665201,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:15","end":"21:15","startHours":20.25243554665201,"endHours":21.25243554665201,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:15","end":"22:15","startHours":21.25243554665201,"endHours":22.25243554665201,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:15","end":"23:15","startHours":22.25243554665201,"endHours":23.25243554665201,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:15","end":"00:15","startHours":23.25243554665201,"endHours":24.25243554665201,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:15","end":"01:15","startHours":24.25243554665201,"endHours":25.25243554665201,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:15","end":"02:15","startHours":25.25243554665201,"endHours":26.25243554665201,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:15","end":"03:15","startHours":26.25243554665201,"endHours":27.25243554665201,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:15","end":"04:15","startHours":27.25243554665201,"endHours":28.25243554665201,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:15","end":"05:15","startHours":28.25243554665201,"endHours":29.25243554665201,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"North (Uttara)","chandraVasa":"North","rahuVasa":"South-West","anandadiYoga":{"name":"Sushira","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":12.476739421975013,"eotMinutes":-3.0500109105302213,"ayanamsa":25.5521}},"calendars":{"vikram_samvat":2178,"vikram_samvatsara":"Jaya","saka_samvat":2043,"saka_samvatsara":"Vṛṣa","bengali_samvat":1528,"malayalam_era":1297,"nanakshahi_year":652,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","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":"Śrāvaṇa Śukla Saptamī · Vikram 2178 Jaya · Śaka 2043 Vṛṣa"},"festivals":[],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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 August 20, 2121 CE · Howrah, West Bengal · Vidhyamitra","description":"August 20, 2121 CE for Howrah, West Bengal: Śukla Saptamī, sūryodaya 05:15, sūryāsta 18:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/2121-08-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/2121-08-20","sa":"https://sa.vidhyamitra.com/city/howrah/2121-08-20","hi":"https://hi.vidhyamitra.com/city/howrah/2121-08-20","x-default":"https://vidhyamitra.com/city/howrah/2121-08-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T04:25:47.427Z","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":"2026-06-03T04:25:47.427Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T04:25:47.427Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}