{"id":"vidhyamitra:city-day:seattle:1981-02-07:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/seattle/1981-02-07","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-02-07","date_display":"February 7, 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":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444642.770833,"kali_year":5082,"ahargana":1856177.2708,"sun":{"sidereal_longitude":294.6947,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":320.5973,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.9026,"elapsed_within_tithi_degrees":1.9026},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.5973,"elapsed_within_degrees":0.5973},"yoga":{"number":20,"name":"Śiva","sum_longitude":255.2919},"karana":{"half_tithi_index":4,"name":"Taitila"},"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":1981,"month":2,"day":7,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444642.770833,"ahargana":1856177.2708,"kali_year":5082,"ayanamsa_lahiri":23.589,"grahas":{"sun":{"sidereal_longitude":294.59372600000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":322.07792599999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false,"latitude":-2.2348},"mars":{"sidereal_longitude":306.78172599999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":311.448126,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":166.57802600000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":280.18522600000006,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.64042599999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":110.7956,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":290.7956,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":2,"day":7,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444642.770833,"kali_year":5082,"ahargana":1856177.2708,"sun":{"sidereal_longitude":294.6947,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":320.5973,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":3,"name":"Tṛtīyā","paksha":"Śukla","full_name":"Śukla Tṛtīyā","elongation_degrees":25.9026,"elapsed_within_tithi_degrees":1.9026},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.5973,"elapsed_within_degrees":0.5973},"yoga":{"number":20,"name":"Śiva","sum_longitude":255.2919},"karana":{"half_tithi_index":4,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.235,"elongation":25.903},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.235,"opposition_distance":154.097}},"eclipse_window_40days":[{"offset_days":-18,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776},{"offset_days":-2,"type":"solar","occurs":true,"moon_latitude":-0.15,"elongation":0.162}]},"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":"07:28","sunsetLocal":"17:19","solarNoonLocal":"12:24","dayLengthHours":9.840664316352637,"dayLengthDisplay":"9 Hours 50 Mins 26 Secs","nightLengthDisplay":"14 Hours 09 Mins 34 Secs","moonriseLocal":"08:35","moonsetLocal":"19:52","rahuKala":{"name":"Rāhu Kāla","start":"09:56","end":"11:10","startHours":9.934934796067951,"endHours":11.16501783561203,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:38","end":"14:51","startHours":13.625183914700191,"endHours":14.85526695424427,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:28","end":"08:42","startHours":7.474768716979792,"endHours":8.704851756523873,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:46","end":"10:06","startHours":9.77092372412874,"endHours":10.098945868007162,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:53","end":"08:09","startHours":7.884796396827818,"endHours":8.147214111930555,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:04","end":"12:43","startHours":12.06707873127769,"endHours":12.723123019034531,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:10","end":"06:49","startHours":6.162680141466107,"endHours":6.81872442922295,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:39","end":"07:28","startHours":6.654713357283739,"endHours":7.474768716979792,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:41","startHours":14.035211594548215,"endHours":14.691255882305057,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:07","end":"17:31","startHours":17.11543303333243,"endHours":17.515433033332428,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:19","end":"17:44","startHours":17.31543303333243,"endHours":17.725460713180457,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:04","end":"18:49","startHours":17.06543303333243,"endHours":18.81543303333243,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:04","end":"00:43","startHours":24.06707873127769,"endHours":24.72312301903453,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"07:28","end":"08:42","startHours":7.474768716979792,"endHours":8.704851756523873,"quality":"inauspicious"},{"name":"Śubha","start":"08:42","end":"09:56","startHours":8.704851756523873,"endHours":9.934934796067951,"quality":"auspicious"},{"name":"Roga","start":"09:56","end":"11:10","startHours":9.934934796067951,"endHours":11.16501783561203,"quality":"inauspicious"},{"name":"Udveg","start":"11:10","end":"12:24","startHours":11.16501783561203,"endHours":12.39510087515611,"quality":"inauspicious"},{"name":"Chala","start":"12:24","end":"13:38","startHours":12.39510087515611,"endHours":13.625183914700191,"quality":"neutral"},{"name":"Labha","start":"13:38","end":"14:51","startHours":13.625183914700191,"endHours":14.85526695424427,"quality":"auspicious"},{"name":"Amṛta","start":"14:51","end":"16:05","startHours":14.85526695424427,"endHours":16.08534999378835,"quality":"auspicious"},{"name":"Kāla","start":"16:05","end":"17:19","startHours":16.08534999378835,"endHours":17.31543303333243,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:19","end":"19:05","startHours":17.31543303333243,"endHours":19.08534999378835,"quality":"auspicious"},{"name":"Amṛta","start":"19:05","end":"20:51","startHours":19.08534999378835,"endHours":20.85526695424427,"quality":"auspicious"},{"name":"Kāla","start":"20:51","end":"22:38","startHours":20.85526695424427,"endHours":22.62518391470019,"quality":"inauspicious"},{"name":"Śubha","start":"22:38","end":"00:24","startHours":22.62518391470019,"endHours":24.39510087515611,"quality":"auspicious"},{"name":"Roga","start":"00:24","end":"02:10","startHours":24.39510087515611,"endHours":26.16501783561203,"quality":"inauspicious"},{"name":"Udveg","start":"02:10","end":"03:56","startHours":26.16501783561203,"endHours":27.93493479606795,"quality":"inauspicious"},{"name":"Chala","start":"03:56","end":"05:42","startHours":27.93493479606795,"endHours":29.704851756523873,"quality":"neutral"},{"name":"Labha","start":"05:42","end":"07:28","startHours":29.704851756523873,"endHours":31.474768716979792,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:28","end":"08:28","startHours":7.474768716979792,"endHours":8.474768716979792,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"08:28","end":"09:28","startHours":8.474768716979792,"endHours":9.474768716979792,"planetary_lord":"Moon"},{"name":"Hora 3","start":"09:28","end":"10:28","startHours":9.474768716979792,"endHours":10.474768716979792,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"10:28","end":"11:28","startHours":10.474768716979792,"endHours":11.474768716979792,"planetary_lord":"Venus"},{"name":"Hora 5","start":"11:28","end":"12:28","startHours":11.474768716979792,"endHours":12.474768716979792,"planetary_lord":"Sun"},{"name":"Hora 6","start":"12:28","end":"13:28","startHours":12.474768716979792,"endHours":13.474768716979792,"planetary_lord":"Mars"},{"name":"Hora 7","start":"13:28","end":"14:28","startHours":13.474768716979792,"endHours":14.474768716979792,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"14:28","end":"15:28","startHours":14.474768716979792,"endHours":15.474768716979792,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"15:28","end":"16:28","startHours":15.474768716979792,"endHours":16.474768716979792,"planetary_lord":"Moon"},{"name":"Hora 10","start":"16:28","end":"17:28","startHours":16.474768716979792,"endHours":17.474768716979792,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"17:28","end":"18:28","startHours":17.474768716979792,"endHours":18.474768716979792,"planetary_lord":"Venus"},{"name":"Hora 12","start":"18:28","end":"19:28","startHours":18.474768716979792,"endHours":19.474768716979792,"planetary_lord":"Sun"},{"name":"Hora 13","start":"19:28","end":"20:28","startHours":19.474768716979792,"endHours":20.474768716979792,"planetary_lord":"Mars"},{"name":"Hora 14","start":"20:28","end":"21:28","startHours":20.474768716979792,"endHours":21.474768716979792,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"21:28","end":"22:28","startHours":21.474768716979792,"endHours":22.474768716979792,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"22:28","end":"23:28","startHours":22.474768716979792,"endHours":23.474768716979792,"planetary_lord":"Moon"},{"name":"Hora 17","start":"23:28","end":"00:28","startHours":23.474768716979792,"endHours":24.474768716979792,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"00:28","end":"01:28","startHours":24.474768716979792,"endHours":25.474768716979792,"planetary_lord":"Venus"},{"name":"Hora 19","start":"01:28","end":"02:28","startHours":25.474768716979792,"endHours":26.474768716979792,"planetary_lord":"Sun"},{"name":"Hora 20","start":"02:28","end":"03:28","startHours":26.474768716979792,"endHours":27.474768716979792,"planetary_lord":"Mars"},{"name":"Hora 21","start":"03:28","end":"04:28","startHours":27.474768716979792,"endHours":28.474768716979792,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"04:28","end":"05:28","startHours":28.474768716979792,"endHours":29.474768716979792,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"05:28","end":"06:28","startHours":29.474768716979792,"endHours":30.474768716979792,"planetary_lord":"Moon"},{"name":"Hora 24","start":"06:28","end":"07:28","startHours":30.474768716979792,"endHours":31.474768716979792,"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","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Amṛta","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":-15.378301108499002,"eotMinutes":-14.37765250936663,"ayanamsa":23.589}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"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 Tṛtīyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"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":[]},"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 February 7, 1981 CE · Seattle, USA · Vidhyamitra","description":"February 7, 1981 CE for Seattle, USA: Śukla Tṛtīyā, sūryodaya 07:28, sūryāsta 17:19.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/seattle/1981-02-07","hreflang_alternates":{"en":"https://vidhyamitra.com/city/seattle/1981-02-07","sa":"https://sa.vidhyamitra.com/city/seattle/1981-02-07","hi":"https://hi.vidhyamitra.com/city/seattle/1981-02-07","x-default":"https://vidhyamitra.com/city/seattle/1981-02-07"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T07:30:04.434Z","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":"2026-06-01T07:30:04.434Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T07:30:04.434Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}