{"id":"vidhyamitra:city-day:seattle:1981-10-25:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/seattle/1981-10-25","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-10-25","date_display":"October 25, 1981 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":1981,"month":10,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444902.770833,"kali_year":5083,"ahargana":1856437.2708,"sun":{"sidereal_longitude":187.2791,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":155.263,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":327.9838,"elapsed_within_tithi_degrees":3.9838},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":155.263,"elapsed_within_degrees":8.5963},"yoga":{"number":26,"name":"Indra","sum_longitude":342.5421},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1981,"month":10,"day":25,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444902.770833,"ahargana":1856437.2708,"kali_year":5083,"ayanamsa_lahiri":23.599,"grahas":{"sun":{"sidereal_longitude":187.94399199999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":156.47169200000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false,"latitude":3.8252},"mars":{"sidereal_longitude":128.95649200000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":175.529992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":179.87709199999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":234.50679200000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":171.22449200000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":97.0196,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":277.0196,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":1981,"month":10,"day":25,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444902.770833,"kali_year":5083,"ahargana":1856437.2708,"sun":{"sidereal_longitude":187.2791,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":155.263,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":28,"name":"Trayodaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Trayodaśī","elongation_degrees":327.9838,"elapsed_within_tithi_degrees":3.9838},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":155.263,"elapsed_within_degrees":8.5963},"yoga":{"number":26,"name":"Indra","sum_longitude":342.5421},"karana":{"half_tithi_index":54,"name":"Gara"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.825,"elongation":32.016},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.825,"opposition_distance":147.984}},"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":"06:42","sunsetLocal":"17:04","solarNoonLocal":"11:53","dayLengthHours":10.376116473835673,"dayLengthDisplay":"10 Hours 22 Mins 34 Secs","nightLengthDisplay":"13 Hours 37 Mins 26 Secs","moonriseLocal":"03:44","moonsetLocal":"15:51","rahuKala":{"name":"Rāhu Kāla","start":"15:47","end":"17:04","startHours":15.775936026572278,"endHours":17.07295058580174,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:53","end":"13:11","startHours":11.884892348883902,"endHours":13.181906908113362,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:29","end":"15:47","startHours":14.478921467342822,"endHours":15.775936026572278,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:07","end":"09:28","startHours":9.117927955861056,"endHours":9.463798504988912,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:08","end":"07:24","startHours":7.129172298375886,"endHours":7.405868737678171,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:32","end":"12:14","startHours":11.539021799756046,"endHours":12.230762898011758,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:19","end":"06:00","startHours":5.313351915454644,"endHours":6.005093013710355,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:50","end":"06:42","startHours":5.832157739146427,"endHours":6.696834111966067,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:37","end":"14:18","startHours":13.61424509452318,"endHours":14.305986192778892,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:52","end":"17:16","startHours":16.87295058580174,"endHours":17.272950585801738,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:04","end":"17:30","startHours":17.07295058580174,"endHours":17.505288772211557,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:49","end":"18:34","startHours":16.82295058580174,"endHours":18.57295058580174,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:32","end":"00:14","startHours":23.539021799756046,"endHours":24.230762898011758,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:42","end":"08:00","startHours":6.696834111966067,"endHours":7.993848671195526,"quality":"inauspicious"},{"name":"Chala","start":"08:00","end":"09:17","startHours":7.993848671195526,"endHours":9.290863230424986,"quality":"neutral"},{"name":"Labha","start":"09:17","end":"10:35","startHours":9.290863230424986,"endHours":10.587877789654444,"quality":"auspicious"},{"name":"Amṛta","start":"10:35","end":"11:53","startHours":10.587877789654444,"endHours":11.884892348883902,"quality":"auspicious"},{"name":"Kāla","start":"11:53","end":"13:11","startHours":11.884892348883902,"endHours":13.181906908113362,"quality":"inauspicious"},{"name":"Śubha","start":"13:11","end":"14:29","startHours":13.181906908113362,"endHours":14.478921467342822,"quality":"auspicious"},{"name":"Roga","start":"14:29","end":"15:47","startHours":14.478921467342822,"endHours":15.775936026572278,"quality":"inauspicious"},{"name":"Udveg","start":"15:47","end":"17:04","startHours":15.775936026572278,"endHours":17.07295058580174,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"17:04","end":"18:47","startHours":17.07295058580174,"endHours":18.77593602657228,"quality":"auspicious"},{"name":"Roga","start":"18:47","end":"20:29","startHours":18.77593602657228,"endHours":20.478921467342822,"quality":"inauspicious"},{"name":"Udveg","start":"20:29","end":"22:11","startHours":20.478921467342822,"endHours":22.181906908113362,"quality":"inauspicious"},{"name":"Chala","start":"22:11","end":"23:53","startHours":22.181906908113362,"endHours":23.884892348883902,"quality":"neutral"},{"name":"Labha","start":"23:53","end":"01:35","startHours":23.884892348883902,"endHours":25.587877789654442,"quality":"auspicious"},{"name":"Amṛta","start":"01:35","end":"03:17","startHours":25.587877789654442,"endHours":27.290863230424982,"quality":"auspicious"},{"name":"Kāla","start":"03:17","end":"05:00","startHours":27.290863230424982,"endHours":28.993848671195526,"quality":"inauspicious"},{"name":"Śubha","start":"05:00","end":"06:42","startHours":28.993848671195526,"endHours":30.696834111966066,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.696834111966067,"endHours":7.696834111966067,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.696834111966067,"endHours":8.696834111966066,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.696834111966066,"endHours":9.696834111966066,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.696834111966066,"endHours":10.696834111966066,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.696834111966066,"endHours":11.696834111966066,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.696834111966066,"endHours":12.696834111966066,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.696834111966066,"endHours":13.696834111966066,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.696834111966066,"endHours":14.696834111966066,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.696834111966066,"endHours":15.696834111966066,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.696834111966066,"endHours":16.696834111966066,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.696834111966066,"endHours":17.696834111966066,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.696834111966066,"endHours":18.696834111966066,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.696834111966066,"endHours":19.696834111966066,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.696834111966066,"endHours":20.696834111966066,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.696834111966066,"endHours":21.696834111966066,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.696834111966066,"endHours":22.696834111966066,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.696834111966066,"endHours":23.696834111966066,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.696834111966066,"endHours":24.696834111966066,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.696834111966066,"endHours":25.696834111966066,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.696834111966066,"endHours":26.696834111966066,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.696834111966066,"endHours":27.696834111966066,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.696834111966066,"endHours":28.696834111966066,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.696834111966066,"endHours":29.696834111966066,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.696834111966066,"endHours":30.696834111966066,"planetary_lord":"Jupiter"}],"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":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.009217183810296,"eotMinutes":16.234859066965946,"ayanamsa":23.599}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Trayodaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"dhanteras","name":"Dhanteras (Dhanvantari Jayantī)","name_sanskrit":"धनतेरस / धन्वन्तरि जयन्ती","tradition":"Pan-Hindu","associated_deity":"Dhanvantari (Āyurveda-deva, avatāra of Viṣṇu)","significance":"Birth of Dhanvantari from samudra-mathana with amṛta-kalaśa. Day 1 of Diwali.","vrata":true,"detection":{"tithi_number":28,"tithi_paksha":"Kṛṣṇa","lunar_month":"Kārtika"},"precedence":2,"sources":["Bhāgavata 8.8.32-34"]},{"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":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 October 25, 1981 CE · Seattle, USA · Vidhyamitra","description":"October 25, 1981 CE for Seattle, USA: Kṛṣṇa Trayodaśī, sūryodaya 06:42, sūryāsta 17:04.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/seattle/1981-10-25","hreflang_alternates":{"en":"https://vidhyamitra.com/city/seattle/1981-10-25","sa":"https://sa.vidhyamitra.com/city/seattle/1981-10-25","hi":"https://hi.vidhyamitra.com/city/seattle/1981-10-25","x-default":"https://vidhyamitra.com/city/seattle/1981-10-25"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T01:44:09.271Z","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":"2026-06-01T01:44:09.271Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T01:44:09.271Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}