{"id":"vidhyamitra:city-day:seattle:1981-01-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/seattle/1981-01-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-01","date_display":"January 1, 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":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444605.770833,"kali_year":5082,"ahargana":1856140.2708,"sun":{"sidereal_longitude":256.7687,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":195.7318,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.9631,"elapsed_within_tithi_degrees":10.9631},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":195.7318,"elapsed_within_degrees":9.0651},"yoga":{"number":7,"name":"Sukarma","sum_longitude":92.5005},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444605.770833,"ahargana":1856140.2708,"kali_year":5082,"ayanamsa_lahiri":23.5876,"grahas":{"sun":{"sidereal_longitude":256.95444,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":197.01484000000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":4},"retrograde":false,"latitude":4.4662},"mars":{"sidereal_longitude":277.60303999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":257.6225400000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":165.96424000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":233.87724000000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":165.67384000000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.7561,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.7561,"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":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444605.770833,"kali_year":5082,"ahargana":1856140.2708,"sun":{"sidereal_longitude":256.7687,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":195.7318,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":25,"name":"Daśamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Daśamī","elongation_degrees":298.9631,"elapsed_within_tithi_degrees":10.9631},"nakshatra":{"number":15,"name":"Svātī","pada":3,"moon_longitude":195.7318,"elapsed_within_degrees":9.0651},"yoga":{"number":7,"name":"Sukarma","sum_longitude":92.5005},"karana":{"half_tithi_index":49,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.466,"elongation":61.037},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.466,"opposition_distance":118.963}},"eclipse_window_40days":[{"offset_days":19,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"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":"07:58","sunsetLocal":"16:28","solarNoonLocal":"12:13","dayLengthHours":8.502997300686943,"dayLengthDisplay":"8 Hours 30 Mins 11 Secs","nightLengthDisplay":"15 Hours 29 Mins 49 Secs","moonriseLocal":"03:18","moonsetLocal":"13:09","rahuKala":{"name":"Rāhu Kāla","start":"13:17","end":"14:21","startHours":13.280100967975805,"endHours":14.342975630561671,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:58","end":"09:02","startHours":7.965727655046465,"endHours":9.028602317632334,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:05","end":"11:09","startHours":10.0914769802182,"endHours":11.15435164280407,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:57","end":"10:14","startHours":9.949760358540086,"endHours":10.233193601896318,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"08:19","end":"08:33","startHours":8.320019209241755,"endHours":8.54676580392674,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:30","startHours":11.933793062033704,"endHours":12.500659548746167,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:50","end":"07:24","startHours":6.8319946816215396,"endHours":7.398861168334003,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"07:15","end":"07:58","startHours":7.257144546655887,"endHours":7.965727655046465,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:38","end":"14:12","startHours":13.634392522171094,"endHours":14.201259008883557,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:16","end":"16:40","startHours":16.268724955733408,"endHours":16.668724955733406,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:28","end":"16:49","startHours":16.468724955733407,"endHours":16.823016509928696,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:13","end":"17:58","startHours":16.218724955733407,"endHours":17.968724955733407,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:30","startHours":23.933793062033704,"endHours":24.500659548746167,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:58","end":"09:02","startHours":7.965727655046465,"endHours":9.028602317632334,"quality":"auspicious"},{"name":"Roga","start":"09:02","end":"10:05","startHours":9.028602317632334,"endHours":10.0914769802182,"quality":"inauspicious"},{"name":"Udveg","start":"10:05","end":"11:09","startHours":10.0914769802182,"endHours":11.15435164280407,"quality":"inauspicious"},{"name":"Chala","start":"11:09","end":"12:13","startHours":11.15435164280407,"endHours":12.217226305389936,"quality":"neutral"},{"name":"Labha","start":"12:13","end":"13:17","startHours":12.217226305389936,"endHours":13.280100967975805,"quality":"auspicious"},{"name":"Amṛta","start":"13:17","end":"14:21","startHours":13.280100967975805,"endHours":14.342975630561671,"quality":"auspicious"},{"name":"Kāla","start":"14:21","end":"15:24","startHours":14.342975630561671,"endHours":15.405850293147541,"quality":"inauspicious"},{"name":"Śubha","start":"15:24","end":"16:28","startHours":15.405850293147541,"endHours":16.468724955733407,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"16:28","end":"18:24","startHours":16.468724955733407,"endHours":18.405850293147537,"quality":"auspicious"},{"name":"Kāla","start":"18:24","end":"20:21","startHours":18.405850293147537,"endHours":20.34297563056167,"quality":"inauspicious"},{"name":"Śubha","start":"20:21","end":"22:17","startHours":20.34297563056167,"endHours":22.280100967975805,"quality":"auspicious"},{"name":"Roga","start":"22:17","end":"00:13","startHours":22.280100967975805,"endHours":24.217226305389936,"quality":"inauspicious"},{"name":"Udveg","start":"00:13","end":"02:09","startHours":24.217226305389936,"endHours":26.154351642804066,"quality":"inauspicious"},{"name":"Chala","start":"02:09","end":"04:05","startHours":26.154351642804066,"endHours":28.0914769802182,"quality":"neutral"},{"name":"Labha","start":"04:05","end":"06:02","startHours":28.0914769802182,"endHours":30.028602317632334,"quality":"auspicious"},{"name":"Amṛta","start":"06:02","end":"07:58","startHours":30.028602317632334,"endHours":31.965727655046464,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:58","end":"08:58","startHours":7.965727655046465,"endHours":8.965727655046464,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:58","end":"09:58","startHours":8.965727655046464,"endHours":9.965727655046464,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:58","end":"10:58","startHours":9.965727655046464,"endHours":10.965727655046464,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:58","end":"11:58","startHours":10.965727655046464,"endHours":11.965727655046464,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:58","end":"12:58","startHours":11.965727655046464,"endHours":12.965727655046464,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:58","end":"13:58","startHours":12.965727655046464,"endHours":13.965727655046464,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:58","end":"14:58","startHours":13.965727655046464,"endHours":14.965727655046464,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:58","end":"15:58","startHours":14.965727655046464,"endHours":15.965727655046464,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:58","end":"16:58","startHours":15.965727655046464,"endHours":16.965727655046464,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:58","end":"17:58","startHours":16.965727655046464,"endHours":17.965727655046464,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:58","end":"18:58","startHours":17.965727655046464,"endHours":18.965727655046464,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:58","end":"19:58","startHours":18.965727655046464,"endHours":19.965727655046464,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:58","end":"20:58","startHours":19.965727655046464,"endHours":20.965727655046464,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:58","end":"21:58","startHours":20.965727655046464,"endHours":21.965727655046464,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:58","end":"22:58","startHours":21.965727655046464,"endHours":22.965727655046464,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:58","end":"23:58","startHours":22.965727655046464,"endHours":23.965727655046464,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:58","end":"00:58","startHours":23.965727655046464,"endHours":24.965727655046464,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:58","end":"01:58","startHours":24.965727655046464,"endHours":25.965727655046464,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:58","end":"02:58","startHours":25.965727655046464,"endHours":26.965727655046464,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:58","end":"03:58","startHours":26.965727655046464,"endHours":27.965727655046464,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:58","end":"04:58","startHours":27.965727655046464,"endHours":28.965727655046464,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:58","end":"05:58","startHours":28.965727655046464,"endHours":29.965727655046464,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:58","end":"06:58","startHours":29.965727655046464,"endHours":30.965727655046464,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:58","end":"07:58","startHours":30.965727655046464,"endHours":31.965727655046464,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North","rahuVasa":"North-West","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.017926094547253,"eotMinutes":-3.705178323396069,"ayanamsa":23.5876}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Daśamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — 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 January 1, 1981 CE · Seattle, USA · Vidhyamitra","description":"January 1, 1981 CE for Seattle, USA: Kṛṣṇa Daśamī, sūryodaya 07:58, sūryāsta 16:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/seattle/1981-01-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/seattle/1981-01-01","sa":"https://sa.vidhyamitra.com/city/seattle/1981-01-01","hi":"https://hi.vidhyamitra.com/city/seattle/1981-01-01","x-default":"https://vidhyamitra.com/city/seattle/1981-01-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T12:29:54.092Z","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":"2026-06-01T12:29:54.092Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T12:29:54.092Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}