{"id":"vidhyamitra:city-day:dwarka:1817-01-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/dwarka/1817-01-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1817-01-21","date_display":"January 21, 1817 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":1817,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384725.770833,"kali_year":4918,"ahargana":1796260.2708,"sun":{"sidereal_longitude":279.8101,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":323.1279,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.3178,"elapsed_within_tithi_degrees":7.3178},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":323.1279,"elapsed_within_degrees":3.1279},"yoga":{"number":19,"name":"Parigha","sum_longitude":242.9379},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":1817,"month":1,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2384725.770833,"ahargana":1796260.2708,"kali_year":4918,"ayanamsa_lahiri":21.2974,"grahas":{"sun":{"sidereal_longitude":279.427196,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":320.63849600000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false,"latitude":-4.46},"mars":{"sidereal_longitude":248.88029600000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":299.82489599999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":225.75579599999992,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":323.01149599999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":303.97169600000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":45.4866,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":225.4866,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","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":1817,"month":1,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2384725.770833,"kali_year":4918,"ahargana":1796260.2708,"sun":{"sidereal_longitude":279.8101,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":323.1279,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.3178,"elapsed_within_tithi_degrees":7.3178},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":323.1279,"elapsed_within_degrees":3.1279},"yoga":{"number":19,"name":"Parigha","sum_longitude":242.9379},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.46,"elongation":43.318},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.46,"opposition_distance":136.682}},"eclipse_window_40days":[]},"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"dwarka","name":"Dvārakā","lat":22.2393,"lon":68.9686,"tz_offset_hours":5.5,"state":"Gujarat","country":"IN","tier":"tirtha"},"sunriseLocal":"07:36","sunsetLocal":"18:35","solarNoonLocal":"13:05","dayLengthHours":10.988227702441725,"dayLengthDisplay":"10 Hours 59 Mins 18 Secs","nightLengthDisplay":"13 Hours 00 Mins 42 Secs","moonriseLocal":"09:59","moonsetLocal":"21:41","rahuKala":{"name":"Rāhu Kāla","start":"15:50","end":"17:13","startHours":15.836745779762635,"endHours":17.210274242567852,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:21","end":"11:43","startHours":10.342631928541774,"endHours":11.716160391346989,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:05","end":"14:28","startHours":13.089688854152204,"endHours":14.46321731695742,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"10:10","end":"10:32","startHours":10.159494800167746,"endHours":10.525769056915802,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"08:03","end":"08:21","startHours":8.053417823866415,"endHours":8.346437229264861,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:43","end":"13:27","startHours":12.723414597404146,"endHours":13.455963110900262,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:08","end":"06:52","startHours":6.130477975939113,"endHours":6.863026489435228,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:41","end":"07:36","startHours":6.679889361061199,"endHours":7.5955750029313425,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:55","end":"15:39","startHours":14.921060137892493,"endHours":15.653608651388607,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:23","end":"18:47","startHours":18.383802705373068,"endHours":18.783802705373066,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:35","end":"19:02","startHours":18.583802705373067,"endHours":19.041645526308137,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:20","end":"20:05","startHours":18.333802705373067,"endHours":20.083802705373067,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:43","end":"01:27","startHours":24.723414597404147,"endHours":25.45596311090026,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:36","end":"08:58","startHours":7.5955750029313425,"endHours":8.969103465736557,"quality":"inauspicious"},{"name":"Udveg","start":"08:58","end":"10:21","startHours":8.969103465736557,"endHours":10.342631928541774,"quality":"inauspicious"},{"name":"Chala","start":"10:21","end":"11:43","startHours":10.342631928541774,"endHours":11.716160391346989,"quality":"neutral"},{"name":"Labha","start":"11:43","end":"13:05","startHours":11.716160391346989,"endHours":13.089688854152204,"quality":"auspicious"},{"name":"Amṛta","start":"13:05","end":"14:28","startHours":13.089688854152204,"endHours":14.46321731695742,"quality":"auspicious"},{"name":"Kāla","start":"14:28","end":"15:50","startHours":14.46321731695742,"endHours":15.836745779762635,"quality":"inauspicious"},{"name":"Śubha","start":"15:50","end":"17:13","startHours":15.836745779762635,"endHours":17.210274242567852,"quality":"auspicious"},{"name":"Roga","start":"17:13","end":"18:35","startHours":17.210274242567852,"endHours":18.583802705373067,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:35","end":"20:13","startHours":18.583802705373067,"endHours":20.210274242567852,"quality":"inauspicious"},{"name":"Śubha","start":"20:13","end":"21:50","startHours":20.210274242567852,"endHours":21.836745779762637,"quality":"auspicious"},{"name":"Roga","start":"21:50","end":"23:28","startHours":21.836745779762637,"endHours":23.46321731695742,"quality":"inauspicious"},{"name":"Udveg","start":"23:28","end":"01:05","startHours":23.46321731695742,"endHours":25.089688854152204,"quality":"inauspicious"},{"name":"Chala","start":"01:05","end":"02:43","startHours":25.089688854152204,"endHours":26.71616039134699,"quality":"neutral"},{"name":"Labha","start":"02:43","end":"04:21","startHours":26.71616039134699,"endHours":28.342631928541774,"quality":"auspicious"},{"name":"Amṛta","start":"04:21","end":"05:58","startHours":28.342631928541774,"endHours":29.96910346573656,"quality":"auspicious"},{"name":"Kāla","start":"05:58","end":"07:36","startHours":29.96910346573656,"endHours":31.59557500293134,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:36","end":"08:36","startHours":7.5955750029313425,"endHours":8.595575002931342,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:36","end":"09:36","startHours":8.595575002931342,"endHours":9.595575002931342,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:36","end":"10:36","startHours":9.595575002931342,"endHours":10.595575002931342,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:36","end":"11:36","startHours":10.595575002931342,"endHours":11.595575002931342,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:36","end":"12:36","startHours":11.595575002931342,"endHours":12.595575002931342,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:36","end":"13:36","startHours":12.595575002931342,"endHours":13.595575002931342,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:36","end":"14:36","startHours":13.595575002931342,"endHours":14.595575002931342,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:36","end":"15:36","startHours":14.595575002931342,"endHours":15.595575002931342,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:36","end":"16:36","startHours":15.595575002931342,"endHours":16.59557500293134,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:36","end":"17:36","startHours":16.59557500293134,"endHours":17.59557500293134,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:36","end":"18:36","startHours":17.59557500293134,"endHours":18.59557500293134,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:36","end":"19:36","startHours":18.59557500293134,"endHours":19.59557500293134,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:36","end":"20:36","startHours":19.59557500293134,"endHours":20.59557500293134,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:36","end":"21:36","startHours":20.59557500293134,"endHours":21.59557500293134,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:36","end":"22:36","startHours":21.59557500293134,"endHours":22.59557500293134,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:36","end":"23:36","startHours":22.59557500293134,"endHours":23.59557500293134,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:36","end":"00:36","startHours":23.59557500293134,"endHours":24.59557500293134,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:36","end":"01:36","startHours":24.59557500293134,"endHours":25.59557500293134,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:36","end":"02:36","startHours":25.59557500293134,"endHours":26.59557500293134,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:36","end":"03:36","startHours":26.59557500293134,"endHours":27.59557500293134,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:36","end":"04:36","startHours":27.59557500293134,"endHours":28.59557500293134,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:36","end":"05:36","startHours":28.59557500293134,"endHours":29.59557500293134,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:36","end":"06:36","startHours":29.59557500293134,"endHours":30.59557500293134,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:36","end":"07:36","startHours":30.59557500293134,"endHours":31.59557500293134,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-19.992916070444792,"eotMinutes":-11.255731249132124,"ayanamsa":21.2974}},"calendars":{"vikram_samvat":1874,"vikram_samvatsara":"Vikṛti","saka_samvat":1739,"saka_samvatsara":"Īśvara","bengali_samvat":1224,"malayalam_era":993,"nanakshahi_year":348,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Māgha","lunar_month_amanta":"Māgha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturthī · Vikram 1874 Vikṛti · Śaka 1739 Īśvara"},"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":"dwarka"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 21, 1817 CE · Dvārakā · Vidhyamitra","description":"January 21, 1817 CE for Dvārakā: Śukla Caturthī, sūryodaya 07:36, sūryāsta 18:35.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/dwarka/1817-01-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/dwarka/1817-01-21","sa":"https://sa.vidhyamitra.com/city/dwarka/1817-01-21","hi":"https://hi.vidhyamitra.com/city/dwarka/1817-01-21","x-default":"https://vidhyamitra.com/city/dwarka/1817-01-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T21:54:37.054Z","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":"2026-05-31T21:54:37.054Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T21:54:37.054Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}