{"id":"vidhyamitra:city-day:seattle:2026-01-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/seattle/2026-01-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2026-01-31","date_display":"January 31, 2026 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":2026,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461071.770833,"kali_year":5127,"ahargana":1872606.2708,"sun":{"sidereal_longitude":286.8927,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":83.6145,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":156.7219,"elapsed_within_tithi_degrees":0.7219},"nakshatra":{"number":7,"name":"Punarvasu","pada":2,"moon_longitude":83.6145,"elapsed_within_degrees":3.6145},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.5072},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2026,"month":1,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461071.770833,"ahargana":1872606.2708,"kali_year":5127,"ayanamsa_lahiri":24.2174,"grahas":{"sun":{"sidereal_longitude":286.9451180000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"moon":{"sidereal_longitude":81.78501799999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false,"latitude":3.7597},"mars":{"sidereal_longitude":281.36551800000007,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":293.22291799999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":83.09701799999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"venus":{"sidereal_longitude":292.41171800000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":334.417818,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":320.3082,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":140.3082,"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":2026,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461071.770833,"kali_year":5127,"ahargana":1872606.2708,"sun":{"sidereal_longitude":286.8927,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":83.6145,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":156.7219,"elapsed_within_tithi_degrees":0.7219},"nakshatra":{"number":7,"name":"Punarvasu","pada":2,"moon_longitude":83.6145,"elapsed_within_degrees":3.6145},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":10.5072},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.76,"elongation":156.722},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.76,"opposition_distance":23.278}},"eclipse_window_40days":[]},"city":{"slug":"seattle","name":"Seattle, USA","lat":47.6062,"lon":-122.3321,"tz_offset_hours":-8,"country":"US","tier":"diaspora"},"tier2":{"city":{"slug":"seattle","name":"Seattle, USA","lat":47.6062,"lon":-122.3321,"tz_offset_hours":-8,"country":"US","tier":"diaspora"},"sunriseLocal":"07:38","sunsetLocal":"17:08","solarNoonLocal":"12:23","dayLengthHours":9.502229270923513,"dayLengthDisplay":"9 Hours 30 Mins 08 Secs","nightLengthDisplay":"14 Hours 29 Mins 52 Secs","moonriseLocal":"14:50","moonsetLocal":"06:34","rahuKala":{"name":"Rāhu Kāla","start":"10:00","end":"11:12","startHours":10.00540915796649,"endHours":11.193187816831928,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:34","end":"14:45","startHours":13.568745134562807,"endHours":14.756523793428245,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:38","end":"08:49","startHours":7.629851840235611,"endHours":8.81763049910105,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:51","end":"10:10","startHours":9.847038670117765,"endHours":10.163779645815215,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"08:02","end":"08:17","startHours":8.025778059857425,"endHours":8.279170840415386,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:42","startHours":12.064225499999916,"endHours":12.697707451394818,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:22","end":"07:00","startHours":6.36288793744581,"endHours":6.996369888840711,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:50","end":"07:38","startHours":6.837999400991985,"endHours":7.629851840235611,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:58","end":"14:36","startHours":13.96467135418462,"endHours":14.59815330557952,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:56","end":"17:20","startHours":16.932081111159125,"endHours":17.332081111159123,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:08","end":"17:32","startHours":17.132081111159124,"endHours":17.528007330780937,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:53","end":"18:38","startHours":16.882081111159124,"endHours":18.632081111159124,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:42","startHours":24.064225499999917,"endHours":24.697707451394816,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:38","end":"08:49","startHours":7.629851840235611,"endHours":8.81763049910105,"quality":"inauspicious"},{"name":"Śubha","start":"08:49","end":"10:00","startHours":8.81763049910105,"endHours":10.00540915796649,"quality":"auspicious"},{"name":"Roga","start":"10:00","end":"11:12","startHours":10.00540915796649,"endHours":11.193187816831928,"quality":"inauspicious"},{"name":"Udveg","start":"11:12","end":"12:23","startHours":11.193187816831928,"endHours":12.380966475697367,"quality":"inauspicious"},{"name":"Chala","start":"12:23","end":"13:34","startHours":12.380966475697367,"endHours":13.568745134562807,"quality":"neutral"},{"name":"Labha","start":"13:34","end":"14:45","startHours":13.568745134562807,"endHours":14.756523793428245,"quality":"auspicious"},{"name":"Amṛta","start":"14:45","end":"15:57","startHours":14.756523793428245,"endHours":15.944302452293686,"quality":"auspicious"},{"name":"Kāla","start":"15:57","end":"17:08","startHours":15.944302452293686,"endHours":17.132081111159124,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:08","end":"18:57","startHours":17.132081111159124,"endHours":18.944302452293684,"quality":"auspicious"},{"name":"Amṛta","start":"18:57","end":"20:45","startHours":18.944302452293684,"endHours":20.756523793428247,"quality":"auspicious"},{"name":"Kāla","start":"20:45","end":"22:34","startHours":20.756523793428247,"endHours":22.568745134562807,"quality":"inauspicious"},{"name":"Śubha","start":"22:34","end":"00:23","startHours":22.568745134562807,"endHours":24.380966475697367,"quality":"auspicious"},{"name":"Roga","start":"00:23","end":"02:12","startHours":24.380966475697367,"endHours":26.19318781683193,"quality":"inauspicious"},{"name":"Udveg","start":"02:12","end":"04:00","startHours":26.19318781683193,"endHours":28.00540915796649,"quality":"inauspicious"},{"name":"Chala","start":"04:00","end":"05:49","startHours":28.00540915796649,"endHours":29.81763049910105,"quality":"neutral"},{"name":"Labha","start":"05:49","end":"07:38","startHours":29.81763049910105,"endHours":31.62985184023561,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:38","end":"08:38","startHours":7.629851840235611,"endHours":8.629851840235611,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:38","end":"09:38","startHours":8.629851840235611,"endHours":9.629851840235611,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:38","end":"10:38","startHours":9.629851840235611,"endHours":10.629851840235611,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:38","end":"11:38","startHours":10.629851840235611,"endHours":11.629851840235611,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:38","end":"12:38","startHours":11.629851840235611,"endHours":12.629851840235611,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:38","end":"13:38","startHours":12.629851840235611,"endHours":13.629851840235611,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:38","end":"14:38","startHours":13.629851840235611,"endHours":14.629851840235611,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:38","end":"15:38","startHours":14.629851840235611,"endHours":15.629851840235611,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:38","end":"16:38","startHours":15.629851840235611,"endHours":16.62985184023561,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:38","end":"17:38","startHours":16.62985184023561,"endHours":17.62985184023561,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:38","end":"18:38","startHours":17.62985184023561,"endHours":18.62985184023561,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:38","end":"19:38","startHours":18.62985184023561,"endHours":19.62985184023561,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:38","end":"20:38","startHours":19.62985184023561,"endHours":20.62985184023561,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:38","end":"21:38","startHours":20.62985184023561,"endHours":21.62985184023561,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:38","end":"22:38","startHours":21.62985184023561,"endHours":22.62985184023561,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:38","end":"23:38","startHours":22.62985184023561,"endHours":23.62985184023561,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:38","end":"00:38","startHours":23.62985184023561,"endHours":24.62985184023561,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:38","end":"01:38","startHours":24.62985184023561,"endHours":25.62985184023561,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:38","end":"02:38","startHours":25.62985184023561,"endHours":26.62985184023561,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:38","end":"03:38","startHours":26.62985184023561,"endHours":27.62985184023561,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:38","end":"04:38","startHours":27.62985184023561,"endHours":28.62985184023561,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:38","end":"05:38","startHours":28.62985184023561,"endHours":29.62985184023561,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:38","end":"06:38","startHours":29.62985184023561,"endHours":30.62985184023561,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:38","end":"07:38","startHours":30.62985184023561,"endHours":31.62985184023561,"planetary_lord":"Mercury"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-17.423440134474212,"eotMinutes":-13.52958854184206,"ayanamsa":24.2174}},"calendars":{"vikram_samvat":2083,"vikram_samvatsara":"Siddhārthī","saka_samvat":1948,"saka_samvatsara":"Parābhava","bengali_samvat":1433,"malayalam_era":1202,"nanakshahi_year":557,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturdaśī · Vikram 2083 Siddhārthī · Śaka 1948 Parābhava"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"seattle"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 31, 2026 CE · Seattle, USA · Vidhyamitra","description":"January 31, 2026 CE for Seattle, USA: Śukla Caturdaśī, sūryodaya 07:38, sūryāsta 17:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/seattle/2026-01-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/seattle/2026-01-31","sa":"https://sa.vidhyamitra.com/city/seattle/2026-01-31","hi":"https://hi.vidhyamitra.com/city/seattle/2026-01-31","x-default":"https://vidhyamitra.com/city/seattle/2026-01-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T20:34:32.973Z","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":"2026-05-14T20:34:32.973Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T20:34:32.973Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}