{"id":"vidhyamitra:city-day:seattle:1981-08-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/seattle/1981-08-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-31","date_display":"August 31, 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":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444847.770833,"kali_year":5083,"ahargana":1856382.2708,"sun":{"sidereal_longitude":133.3218,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":152.7444,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":19.4225,"elapsed_within_tithi_degrees":7.4225},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.7444,"elapsed_within_degrees":6.0777},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.0662},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":1981,"month":8,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444847.770833,"ahargana":1856382.2708,"kali_year":5083,"ayanamsa_lahiri":23.5969,"grahas":{"sun":{"sidereal_longitude":133.96119399999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":151.03779399999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":3.5835},"mars":{"sidereal_longitude":95.357394,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":152.05609400000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":168.19969400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":171.47319399999992,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":164.63849400000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":99.9338,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":279.9338,"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":8,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444847.770833,"kali_year":5083,"ahargana":1856382.2708,"sun":{"sidereal_longitude":133.3218,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":152.7444,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":19.4225,"elapsed_within_tithi_degrees":7.4225},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.7444,"elapsed_within_degrees":6.0777},"yoga":{"number":22,"name":"Sādhya","sum_longitude":286.0662},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.584,"elongation":19.423},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.584,"opposition_distance":160.577}},"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":"05:25","sunsetLocal":"18:53","solarNoonLocal":"12:09","dayLengthHours":13.461001189224667,"dayLengthDisplay":"13 Hours 27 Mins 40 Secs","nightLengthDisplay":"10 Hours 32 Mins 20 Secs","moonriseLocal":"07:05","moonsetLocal":"19:30","rahuKala":{"name":"Rāhu Kāla","start":"07:06","end":"08:47","startHours":7.105171395317629,"endHours":8.787796543970712,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:28","end":"12:09","startHours":10.470421692623795,"endHours":12.153046841276879,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:50","end":"15:31","startHours":13.835671989929963,"endHours":15.518297138583046,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:34","end":"09:01","startHours":8.5634465241503,"endHours":9.012146563791124,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:59","end":"06:21","startHours":5.983421296215573,"endHours":6.342381327928231,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:36","startHours":11.704346801636056,"endHours":12.601746880917702,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:38","end":"04:32","startHours":3.627746088101256,"endHours":4.525146167382901,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:18","end":"05:25","startHours":4.30079614756249,"endHours":5.422546246664545,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:18","startHours":14.39654703948099,"endHours":15.293947118762633,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:41","end":"19:05","startHours":18.683547435889214,"endHours":19.083547435889212,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:53","end":"19:27","startHours":18.883547435889213,"endHours":19.444422485440242,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:38","end":"20:23","startHours":18.633547435889213,"endHours":20.383547435889213,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:36","startHours":23.704346801636056,"endHours":24.601746880917702,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:25","end":"07:06","startHours":5.422546246664545,"endHours":7.105171395317629,"quality":"auspicious"},{"name":"Kāla","start":"07:06","end":"08:47","startHours":7.105171395317629,"endHours":8.787796543970712,"quality":"inauspicious"},{"name":"Śubha","start":"08:47","end":"10:28","startHours":8.787796543970712,"endHours":10.470421692623795,"quality":"auspicious"},{"name":"Roga","start":"10:28","end":"12:09","startHours":10.470421692623795,"endHours":12.153046841276879,"quality":"inauspicious"},{"name":"Udveg","start":"12:09","end":"13:50","startHours":12.153046841276879,"endHours":13.835671989929963,"quality":"inauspicious"},{"name":"Chala","start":"13:50","end":"15:31","startHours":13.835671989929963,"endHours":15.518297138583046,"quality":"neutral"},{"name":"Labha","start":"15:31","end":"17:12","startHours":15.518297138583046,"endHours":17.20092228723613,"quality":"auspicious"},{"name":"Amṛta","start":"17:12","end":"18:53","startHours":17.20092228723613,"endHours":18.883547435889213,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:53","end":"20:12","startHours":18.883547435889213,"endHours":20.20092228723613,"quality":"neutral"},{"name":"Labha","start":"20:12","end":"21:31","startHours":20.20092228723613,"endHours":21.518297138583044,"quality":"auspicious"},{"name":"Amṛta","start":"21:31","end":"22:50","startHours":21.518297138583044,"endHours":22.835671989929963,"quality":"auspicious"},{"name":"Kāla","start":"22:50","end":"00:09","startHours":22.835671989929963,"endHours":24.15304684127688,"quality":"inauspicious"},{"name":"Śubha","start":"00:09","end":"01:28","startHours":24.15304684127688,"endHours":25.470421692623795,"quality":"auspicious"},{"name":"Roga","start":"01:28","end":"02:47","startHours":25.470421692623795,"endHours":26.787796543970714,"quality":"inauspicious"},{"name":"Udveg","start":"02:47","end":"04:06","startHours":26.787796543970714,"endHours":28.10517139531763,"quality":"inauspicious"},{"name":"Chala","start":"04:06","end":"05:25","startHours":28.10517139531763,"endHours":29.422546246664545,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:25","end":"06:25","startHours":5.422546246664545,"endHours":6.422546246664545,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:25","end":"07:25","startHours":6.422546246664545,"endHours":7.422546246664545,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:25","end":"08:25","startHours":7.422546246664545,"endHours":8.422546246664545,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:25","end":"09:25","startHours":8.422546246664545,"endHours":9.422546246664545,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:25","end":"10:25","startHours":9.422546246664545,"endHours":10.422546246664545,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:25","end":"11:25","startHours":10.422546246664545,"endHours":11.422546246664545,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:25","end":"12:25","startHours":11.422546246664545,"endHours":12.422546246664545,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:25","end":"13:25","startHours":12.422546246664545,"endHours":13.422546246664545,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:25","end":"14:25","startHours":13.422546246664545,"endHours":14.422546246664545,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:25","end":"15:25","startHours":14.422546246664545,"endHours":15.422546246664545,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:25","end":"16:25","startHours":15.422546246664545,"endHours":16.422546246664545,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:25","end":"17:25","startHours":16.422546246664545,"endHours":17.422546246664545,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:25","end":"18:25","startHours":17.422546246664545,"endHours":18.422546246664545,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:25","end":"19:25","startHours":18.422546246664545,"endHours":19.422546246664545,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:25","end":"20:25","startHours":19.422546246664545,"endHours":20.422546246664545,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:25","end":"21:25","startHours":20.422546246664545,"endHours":21.422546246664545,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:25","end":"22:25","startHours":21.422546246664545,"endHours":22.422546246664545,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:25","end":"23:25","startHours":22.422546246664545,"endHours":23.422546246664545,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:25","end":"00:25","startHours":23.422546246664545,"endHours":24.422546246664545,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:25","end":"01:25","startHours":24.422546246664545,"endHours":25.422546246664545,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:25","end":"02:25","startHours":25.422546246664545,"endHours":26.422546246664545,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:25","end":"03:25","startHours":26.422546246664545,"endHours":27.422546246664545,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:25","end":"04:25","startHours":27.422546246664545,"endHours":28.422546246664545,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:25","end":"05:25","startHours":28.422546246664545,"endHours":29.422546246664545,"planetary_lord":"Venus"}],"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":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":8.733164765444263,"eotMinutes":0.14558952338733633,"ayanamsa":23.5969}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","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":"Bhādrapada Śukla Dvitīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":"seattle"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 31, 1981 CE · Seattle, USA · Vidhyamitra","description":"August 31, 1981 CE for Seattle, USA: Śukla Dvitīyā, sūryodaya 05:25, sūryāsta 18:53.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/seattle/1981-08-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/seattle/1981-08-31","sa":"https://sa.vidhyamitra.com/city/seattle/1981-08-31","hi":"https://hi.vidhyamitra.com/city/seattle/1981-08-31","x-default":"https://vidhyamitra.com/city/seattle/1981-08-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T01:12:51.504Z","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":"2026-06-01T01:12:51.504Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T01:12:51.504Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}