{"id":"vidhyamitra:city-day:howrah:2017-09-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/howrah/2017-09-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2017-09-18","date_display":"September 18, 2017 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":2017,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458014.770833,"kali_year":5119,"ahargana":1869549.2708,"sun":{"sidereal_longitude":150.4524,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":124.3278,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":333.8755,"elapsed_within_tithi_degrees":9.8755},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":124.3278,"elapsed_within_degrees":4.3278},"yoga":{"number":21,"name":"Siddha","sum_longitude":274.7802},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"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":2017,"month":9,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458014.770833,"ahargana":1869549.2708,"kali_year":5119,"ayanamsa_lahiri":24.1004,"grahas":{"sun":{"sidereal_longitude":151.227918,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":123.77371800000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false,"latitude":0.1604},"mars":{"sidereal_longitude":133.66071799999997,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":134.791318,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":180.88591799999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":123.22351800000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":237.37421800000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":122.2827,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":302.2827,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":2017,"month":9,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458014.770833,"kali_year":5119,"ahargana":1869549.2708,"sun":{"sidereal_longitude":150.4524,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":124.3278,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":333.8755,"elapsed_within_tithi_degrees":9.8755},"nakshatra":{"number":10,"name":"Maghā","pada":2,"moon_longitude":124.3278,"elapsed_within_degrees":4.3278},"yoga":{"number":21,"name":"Siddha","sum_longitude":274.7802},"karana":{"half_tithi_index":55,"name":"Vaṇija"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.16,"elongation":26.125},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.16,"opposition_distance":153.875}},"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":"05:24","sunsetLocal":"17:37","solarNoonLocal":"11:30","dayLengthHours":12.223436380857923,"dayLengthDisplay":"12 Hours 13 Mins 24 Secs","nightLengthDisplay":"11 Hours 46 Mins 36 Secs","moonriseLocal":"03:17","moonsetLocal":"16:04","rahuKala":{"name":"Rāhu Kāla","start":"06:55","end":"08:27","startHours":6.921804320950372,"endHours":8.449733868557612,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:59","end":"11:30","startHours":9.977663416164852,"endHours":11.505592963772092,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:02","end":"14:34","startHours":13.033522511379331,"endHours":14.561452058986575,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:15","end":"08:39","startHours":8.246009928876646,"endHours":8.653457808238578,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:54","end":"06:14","startHours":5.903184622545544,"endHours":6.229142926035089,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:06","end":"11:55","startHours":11.098145084410163,"endHours":11.913040843134024,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:46","end":"04:35","startHours":3.7640832558954083,"endHours":4.57897901461927,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:23","end":"05:24","startHours":4.375255074938304,"endHours":5.393874773343131,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:33","end":"14:21","startHours":13.542832360581748,"endHours":14.35772811930561,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:25","end":"17:49","startHours":17.417311154201055,"endHours":17.817311154201054,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:37","end":"18:08","startHours":17.617311154201055,"endHours":18.126621003403468,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:22","end":"19:07","startHours":17.367311154201055,"endHours":19.117311154201055,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:06","end":"23:55","startHours":23.098145084410163,"endHours":23.913040843134027,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:24","end":"06:55","startHours":5.393874773343131,"endHours":6.921804320950372,"quality":"auspicious"},{"name":"Kāla","start":"06:55","end":"08:27","startHours":6.921804320950372,"endHours":8.449733868557612,"quality":"inauspicious"},{"name":"Śubha","start":"08:27","end":"09:59","startHours":8.449733868557612,"endHours":9.977663416164852,"quality":"auspicious"},{"name":"Roga","start":"09:59","end":"11:30","startHours":9.977663416164852,"endHours":11.505592963772092,"quality":"inauspicious"},{"name":"Udveg","start":"11:30","end":"13:02","startHours":11.505592963772092,"endHours":13.033522511379331,"quality":"inauspicious"},{"name":"Chala","start":"13:02","end":"14:34","startHours":13.033522511379331,"endHours":14.561452058986575,"quality":"neutral"},{"name":"Labha","start":"14:34","end":"16:05","startHours":14.561452058986575,"endHours":16.089381606593815,"quality":"auspicious"},{"name":"Amṛta","start":"16:05","end":"17:37","startHours":16.089381606593815,"endHours":17.617311154201055,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"17:37","end":"19:05","startHours":17.617311154201055,"endHours":19.089381606593815,"quality":"neutral"},{"name":"Labha","start":"19:05","end":"20:34","startHours":19.089381606593815,"endHours":20.561452058986575,"quality":"auspicious"},{"name":"Amṛta","start":"20:34","end":"22:02","startHours":20.561452058986575,"endHours":22.03352251137933,"quality":"auspicious"},{"name":"Kāla","start":"22:02","end":"23:30","startHours":22.03352251137933,"endHours":23.505592963772095,"quality":"inauspicious"},{"name":"Śubha","start":"23:30","end":"00:59","startHours":23.505592963772095,"endHours":24.97766341616485,"quality":"auspicious"},{"name":"Roga","start":"00:59","end":"02:27","startHours":24.97766341616485,"endHours":26.44973386855761,"quality":"inauspicious"},{"name":"Udveg","start":"02:27","end":"03:55","startHours":26.44973386855761,"endHours":27.921804320950372,"quality":"inauspicious"},{"name":"Chala","start":"03:55","end":"05:24","startHours":27.921804320950372,"endHours":29.393874773343132,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:24","end":"06:24","startHours":5.393874773343131,"endHours":6.393874773343131,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:24","end":"07:24","startHours":6.393874773343131,"endHours":7.393874773343131,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:24","end":"08:24","startHours":7.393874773343131,"endHours":8.393874773343132,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:24","end":"09:24","startHours":8.393874773343132,"endHours":9.393874773343132,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:24","end":"10:24","startHours":9.393874773343132,"endHours":10.393874773343132,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:24","end":"11:24","startHours":10.393874773343132,"endHours":11.393874773343132,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:24","end":"12:24","startHours":11.393874773343132,"endHours":12.393874773343132,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:24","end":"13:24","startHours":12.393874773343132,"endHours":13.393874773343132,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:24","end":"14:24","startHours":13.393874773343132,"endHours":14.393874773343132,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:24","end":"15:24","startHours":14.393874773343132,"endHours":15.393874773343132,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:24","end":"16:24","startHours":15.393874773343132,"endHours":16.393874773343132,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:24","end":"17:24","startHours":16.393874773343132,"endHours":17.393874773343132,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:24","end":"18:24","startHours":17.393874773343132,"endHours":18.393874773343132,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:24","end":"19:24","startHours":18.393874773343132,"endHours":19.393874773343132,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:24","end":"20:24","startHours":19.393874773343132,"endHours":20.393874773343132,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:24","end":"21:24","startHours":20.393874773343132,"endHours":21.393874773343132,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:24","end":"22:24","startHours":21.393874773343132,"endHours":22.393874773343132,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:24","end":"23:24","startHours":22.393874773343132,"endHours":23.393874773343132,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:24","end":"00:24","startHours":23.393874773343132,"endHours":24.393874773343132,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:24","end":"01:24","startHours":24.393874773343132,"endHours":25.393874773343132,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:24","end":"02:24","startHours":25.393874773343132,"endHours":26.393874773343132,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:24","end":"03:24","startHours":26.393874773343132,"endHours":27.393874773343132,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:24","end":"04:24","startHours":27.393874773343132,"endHours":28.393874773343132,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:24","end":"05:24","startHours":28.393874773343132,"endHours":29.393874773343132,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":1.856346219370937,"eotMinutes":6.610022173674397,"ayanamsa":24.1004}},"calendars":{"vikram_samvat":2074,"vikram_samvatsara":"Sādhāraṇa","saka_samvat":1939,"saka_samvatsara":"Hemalambī","bengali_samvat":1424,"malayalam_era":1193,"nanakshahi_year":548,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Trayodaśī · Vikram 2074 Sādhāraṇa · Śaka 1939 Hemalambī"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 September 18, 2017 CE · Howrah, West Bengal · Vidhyamitra","description":"September 18, 2017 CE for Howrah, West Bengal: Kṛṣṇa Trayodaśī, sūryodaya 05:24, sūryāsta 17:37.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/howrah/2017-09-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/howrah/2017-09-18","sa":"https://sa.vidhyamitra.com/city/howrah/2017-09-18","hi":"https://hi.vidhyamitra.com/city/howrah/2017-09-18","x-default":"https://vidhyamitra.com/city/howrah/2017-09-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T12:12:22.518Z","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":"2026-05-15T12:12:22.518Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T12:12:22.518Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}