{"id":"vidhyamitra:city-day:howrah:2137-08-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/2137-08-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2137-08-20","date_display":"August 20, 2137 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":2137,"month":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501814.770833,"kali_year":5239,"ahargana":1913349.2708,"sun":{"sidereal_longitude":120.4894,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":159.3268,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.8373,"elapsed_within_tithi_degrees":2.8373},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":159.3268,"elapsed_within_degrees":12.6601},"yoga":{"number":21,"name":"Siddha","sum_longitude":279.8162},"karana":{"half_tithi_index":6,"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":2137,"month":8,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2501814.770833,"ahargana":1913349.2708,"kali_year":5239,"ayanamsa_lahiri":25.7756,"grahas":{"sun":{"sidereal_longitude":121.45133600000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":158.30433599999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false,"latitude":-1.3728},"mars":{"sidereal_longitude":72.48333600000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":101.161136,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":210.253336,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":92.951236,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":261.67553599999997,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":321.5479,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":141.5479,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"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":2137,"month":8,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2501814.770833,"kali_year":5239,"ahargana":1913349.2708,"sun":{"sidereal_longitude":120.4894,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":159.3268,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.8373,"elapsed_within_tithi_degrees":2.8373},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":159.3268,"elapsed_within_degrees":12.6601},"yoga":{"number":21,"name":"Siddha","sum_longitude":279.8162},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.373,"elongation":38.837},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.373,"opposition_distance":141.163}},"eclipse_window_40days":[{"offset_days":11,"type":"lunar","occurs":true,"moon_latitude":-0.6,"opposition_distance":2.249}]},"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":12.825734316849513,"dayLengthDisplay":"12 Hours 49 Mins 33 Secs","nightLengthDisplay":"11 Hours 10 Mins 27 Secs","moonriseLocal":"08:08","moonsetLocal":"20:07","rahuKala":{"name":"Rāhu Kāla","start":"14:52","end":"16:29","startHours":14.873027094387881,"endHours":16.47624388399407,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:28","end":"10:04","startHours":8.460159935963125,"endHours":10.063376725569313,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:40","end":"13:16","startHours":11.666593515175503,"endHours":13.269810304781693,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:15","end":"08:40","startHours":8.246397697348966,"endHours":8.673922174577283,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:47","end":"06:08","startHours":5.788131953286143,"endHours":6.130151535068797,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:14","end":"12:06","startHours":11.239069037947186,"endHours":12.09411799240382,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:33","end":"04:24","startHours":3.543628447837478,"endHours":4.398677402294112,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:11","end":"05:15","startHours":4.184915163679953,"endHours":5.253726356750747,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:48","end":"14:40","startHours":13.80421590131709,"endHours":14.659264855773724,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:53","end":"18:17","startHours":17.87946067360026,"endHours":18.27946067360026,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:05","end":"18:37","startHours":18.07946067360026,"endHours":18.613866270135656,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:50","end":"19:35","startHours":17.82946067360026,"endHours":19.57946067360026,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:14","end":"00:06","startHours":23.239069037947186,"endHours":24.09411799240382,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:15","end":"06:51","startHours":5.253726356750747,"endHours":6.856943146356936,"quality":"inauspicious"},{"name":"Udveg","start":"06:51","end":"08:28","startHours":6.856943146356936,"endHours":8.460159935963125,"quality":"inauspicious"},{"name":"Chala","start":"08:28","end":"10:04","startHours":8.460159935963125,"endHours":10.063376725569313,"quality":"neutral"},{"name":"Labha","start":"10:04","end":"11:40","startHours":10.063376725569313,"endHours":11.666593515175503,"quality":"auspicious"},{"name":"Amṛta","start":"11:40","end":"13:16","startHours":11.666593515175503,"endHours":13.269810304781693,"quality":"auspicious"},{"name":"Kāla","start":"13:16","end":"14:52","startHours":13.269810304781693,"endHours":14.873027094387881,"quality":"inauspicious"},{"name":"Śubha","start":"14:52","end":"16:29","startHours":14.873027094387881,"endHours":16.47624388399407,"quality":"auspicious"},{"name":"Roga","start":"16:29","end":"18:05","startHours":16.47624388399407,"endHours":18.07946067360026,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:05","end":"19:29","startHours":18.07946067360026,"endHours":19.47624388399407,"quality":"inauspicious"},{"name":"Śubha","start":"19:29","end":"20:52","startHours":19.47624388399407,"endHours":20.87302709438788,"quality":"auspicious"},{"name":"Roga","start":"20:52","end":"22:16","startHours":20.87302709438788,"endHours":22.269810304781693,"quality":"inauspicious"},{"name":"Udveg","start":"22:16","end":"23:40","startHours":22.269810304781693,"endHours":23.666593515175503,"quality":"inauspicious"},{"name":"Chala","start":"23:40","end":"01:04","startHours":23.666593515175503,"endHours":25.063376725569313,"quality":"neutral"},{"name":"Labha","start":"01:04","end":"02:28","startHours":25.063376725569313,"endHours":26.460159935963127,"quality":"auspicious"},{"name":"Amṛta","start":"02:28","end":"03:51","startHours":26.460159935963127,"endHours":27.856943146356937,"quality":"auspicious"},{"name":"Kāla","start":"03:51","end":"05:15","startHours":27.856943146356937,"endHours":29.253726356750747,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:15","end":"06:15","startHours":5.253726356750747,"endHours":6.253726356750747,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:15","end":"07:15","startHours":6.253726356750747,"endHours":7.253726356750747,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:15","end":"08:15","startHours":7.253726356750747,"endHours":8.253726356750747,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:15","end":"09:15","startHours":8.253726356750747,"endHours":9.253726356750747,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:15","end":"10:15","startHours":9.253726356750747,"endHours":10.253726356750747,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:15","end":"11:15","startHours":10.253726356750747,"endHours":11.253726356750747,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:15","end":"12:15","startHours":11.253726356750747,"endHours":12.253726356750747,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:15","end":"13:15","startHours":12.253726356750747,"endHours":13.253726356750747,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:15","end":"14:15","startHours":13.253726356750747,"endHours":14.253726356750747,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:15","end":"15:15","startHours":14.253726356750747,"endHours":15.253726356750747,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:15","end":"16:15","startHours":15.253726356750747,"endHours":16.253726356750747,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:15","end":"17:15","startHours":16.253726356750747,"endHours":17.253726356750747,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:15","end":"18:15","startHours":17.253726356750747,"endHours":18.253726356750747,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:15","end":"19:15","startHours":18.253726356750747,"endHours":19.253726356750747,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:15","end":"20:15","startHours":19.253726356750747,"endHours":20.253726356750747,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:15","end":"21:15","startHours":20.253726356750747,"endHours":21.253726356750747,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:15","end":"22:15","startHours":21.253726356750747,"endHours":22.253726356750747,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:15","end":"23:15","startHours":22.253726356750747,"endHours":23.253726356750747,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:15","end":"00:15","startHours":23.253726356750747,"endHours":24.253726356750747,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:15","end":"01:15","startHours":24.253726356750747,"endHours":25.253726356750747,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:15","end":"02:15","startHours":25.253726356750747,"endHours":26.253726356750747,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:15","end":"03:15","startHours":26.253726356750747,"endHours":27.253726356750747,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:15","end":"04:15","startHours":27.253726356750747,"endHours":28.253726356750747,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:15","end":"05:15","startHours":28.253726356750747,"endHours":29.253726356750747,"planetary_lord":"Saturn"}],"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":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":12.432995898527993,"eotMinutes":-3.0500109105302213,"ayanamsa":25.7756}},"calendars":{"vikram_samvat":2194,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":2059,"saka_samvatsara":"Hemalambī","bengali_samvat":1544,"malayalam_era":1313,"nanakshahi_year":668,"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 Caturthī · Vikram 2194 Sādhāraṇa · Śaka 2059 Hemalambī"},"festivals":[{"id":"angarika-chaturthi","name":"Aṅgāraka Caturthī (Tuesday Caturthī)","name_sanskrit":"अङ्गारक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa + Maṅgala","significance":"Tuesday-Caturthī (rare); supremely auspicious for Maṅgala-doṣa-nivāraṇa.","vrata":true,"detection":{"any_of":[{"tithi_number":4,"vara_name":"Maṅgalavāra (Tuesday)"},{"tithi_number":19,"vara_name":"Maṅgalavāra (Tuesday)"}]},"precedence":3},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":[]},"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, 2137 CE · Howrah, West Bengal · Vidhyamitra","description":"August 20, 2137 CE for Howrah, West Bengal: Śukla Caturthī, sūryodaya 05:15, sūryāsta 18:05.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/2137-08-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/2137-08-20","sa":"https://sa.vidhyamitra.com/city/howrah/2137-08-20","hi":"https://hi.vidhyamitra.com/city/howrah/2137-08-20","x-default":"https://vidhyamitra.com/city/howrah/2137-08-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T11:53:33.429Z","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":"2026-06-01T11:53:33.429Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T11:53:33.429Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}