{"id":"vidhyamitra:city-day:seattle:1981-12-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/seattle/1981-12-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-12-01","date_display":"December 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":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444939.770833,"kali_year":5083,"ahargana":1856474.2708,"sun":{"sidereal_longitude":224.7032,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":276.5975,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":51.8943,"elapsed_within_tithi_degrees":3.8943},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":276.5975,"elapsed_within_degrees":9.9308},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.3007},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":12,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444939.770833,"ahargana":1856474.2708,"kali_year":5083,"ayanamsa_lahiri":23.6004,"grahas":{"sun":{"sidereal_longitude":225.160079,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":273.3644790000001,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false,"latitude":-0.1207},"mars":{"sidereal_longitude":149.26097900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":220.010179,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":187.56957899999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":270.78167899999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":175.25177899999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":95.0592,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":275.0592,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":1981,"month":12,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444939.770833,"kali_year":5083,"ahargana":1856474.2708,"sun":{"sidereal_longitude":224.7032,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":276.5975,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":51.8943,"elapsed_within_tithi_degrees":3.8943},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3,"moon_longitude":276.5975,"elapsed_within_degrees":9.9308},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":141.3007},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.121,"elongation":51.894},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.121,"opposition_distance":128.106}},"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":"07:37","sunsetLocal":"16:21","solarNoonLocal":"11:59","dayLengthHours":8.73905703436845,"dayLengthDisplay":"8 Hours 44 Mins 21 Secs","nightLengthDisplay":"15 Hours 15 Mins 39 Secs","moonriseLocal":"10:46","moonsetLocal":"19:38","rahuKala":{"name":"Rāhu Kāla","start":"14:10","end":"15:16","startHours":14.17138674858544,"endHours":15.263768877881496,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:48","end":"10:54","startHours":9.801858231401216,"endHours":10.894240360697271,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:59","end":"13:05","startHours":11.986622489993326,"endHours":13.079004619289384,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:39","end":"09:57","startHours":9.656207280828408,"endHours":9.947509181974022,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:59","end":"08:13","startHours":7.981221349241121,"endHours":8.214262870157613,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:42","end":"12:17","startHours":11.69532058884771,"endHours":12.277924391138942,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:27","end":"07:02","startHours":6.451886368226642,"endHours":7.034490170517873,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:53","end":"07:37","startHours":6.888839219945065,"endHours":7.617093972809102,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:27","end":"14:02","startHours":13.443131995721401,"endHours":14.025735798012631,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:09","end":"16:33","startHours":16.156151007177552,"endHours":16.55615100717755,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"16:21","end":"16:43","startHours":16.35615100717755,"endHours":16.72027838360957,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:06","end":"17:51","startHours":16.10615100717755,"endHours":17.85615100717755,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:42","end":"00:17","startHours":23.69532058884771,"endHours":24.277924391138942,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:37","end":"08:43","startHours":7.617093972809102,"endHours":8.709476102105159,"quality":"inauspicious"},{"name":"Udveg","start":"08:43","end":"09:48","startHours":8.709476102105159,"endHours":9.801858231401216,"quality":"inauspicious"},{"name":"Chala","start":"09:48","end":"10:54","startHours":9.801858231401216,"endHours":10.894240360697271,"quality":"neutral"},{"name":"Labha","start":"10:54","end":"11:59","startHours":10.894240360697271,"endHours":11.986622489993326,"quality":"auspicious"},{"name":"Amṛta","start":"11:59","end":"13:05","startHours":11.986622489993326,"endHours":13.079004619289384,"quality":"auspicious"},{"name":"Kāla","start":"13:05","end":"14:10","startHours":13.079004619289384,"endHours":14.17138674858544,"quality":"inauspicious"},{"name":"Śubha","start":"14:10","end":"15:16","startHours":14.17138674858544,"endHours":15.263768877881496,"quality":"auspicious"},{"name":"Roga","start":"15:16","end":"16:21","startHours":15.263768877881496,"endHours":16.35615100717755,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"16:21","end":"18:16","startHours":16.35615100717755,"endHours":18.263768877881496,"quality":"inauspicious"},{"name":"Śubha","start":"18:16","end":"20:10","startHours":18.263768877881496,"endHours":20.17138674858544,"quality":"auspicious"},{"name":"Roga","start":"20:10","end":"22:05","startHours":20.17138674858544,"endHours":22.079004619289382,"quality":"inauspicious"},{"name":"Udveg","start":"22:05","end":"23:59","startHours":22.079004619289382,"endHours":23.986622489993326,"quality":"inauspicious"},{"name":"Chala","start":"23:59","end":"01:54","startHours":23.986622489993326,"endHours":25.89424036069727,"quality":"neutral"},{"name":"Labha","start":"01:54","end":"03:48","startHours":25.89424036069727,"endHours":27.801858231401212,"quality":"auspicious"},{"name":"Amṛta","start":"03:48","end":"05:43","startHours":27.801858231401212,"endHours":29.709476102105157,"quality":"auspicious"},{"name":"Kāla","start":"05:43","end":"07:37","startHours":29.709476102105157,"endHours":31.6170939728091,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:37","end":"08:37","startHours":7.617093972809102,"endHours":8.617093972809101,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:37","end":"09:37","startHours":8.617093972809101,"endHours":9.617093972809101,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:37","end":"10:37","startHours":9.617093972809101,"endHours":10.617093972809101,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:37","end":"11:37","startHours":10.617093972809101,"endHours":11.617093972809101,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:37","end":"12:37","startHours":11.617093972809101,"endHours":12.617093972809101,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:37","end":"13:37","startHours":12.617093972809101,"endHours":13.617093972809101,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:37","end":"14:37","startHours":13.617093972809101,"endHours":14.617093972809101,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:37","end":"15:37","startHours":14.617093972809101,"endHours":15.617093972809101,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:37","end":"16:37","startHours":15.617093972809101,"endHours":16.6170939728091,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:37","end":"17:37","startHours":16.6170939728091,"endHours":17.6170939728091,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:37","end":"18:37","startHours":17.6170939728091,"endHours":18.6170939728091,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:37","end":"19:37","startHours":18.6170939728091,"endHours":19.6170939728091,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:37","end":"20:37","startHours":19.6170939728091,"endHours":20.6170939728091,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:37","end":"21:37","startHours":20.6170939728091,"endHours":21.6170939728091,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:37","end":"22:37","startHours":21.6170939728091,"endHours":22.6170939728091,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:37","end":"23:37","startHours":22.6170939728091,"endHours":23.6170939728091,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:37","end":"00:37","startHours":23.6170939728091,"endHours":24.6170939728091,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:37","end":"01:37","startHours":24.6170939728091,"endHours":25.6170939728091,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:37","end":"02:37","startHours":25.6170939728091,"endHours":26.6170939728091,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:37","end":"03:37","startHours":26.6170939728091,"endHours":27.6170939728091,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:37","end":"04:37","startHours":27.6170939728091,"endHours":28.6170939728091,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:37","end":"05:37","startHours":28.6170939728091,"endHours":29.6170939728091,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:37","end":"06:37","startHours":29.6170939728091,"endHours":30.6170939728091,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:37","end":"07:37","startHours":30.6170939728091,"endHours":31.6170939728091,"planetary_lord":"Saturn"}],"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","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-21.759790397531212,"eotMinutes":10.131050600400467,"ayanamsa":23.6004}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Śukla Pañcamī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 December 1, 1981 CE · Seattle, USA · Vidhyamitra","description":"December 1, 1981 CE for Seattle, USA: Śukla Pañcamī, sūryodaya 07:37, sūryāsta 16:21.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/seattle/1981-12-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/seattle/1981-12-01","sa":"https://sa.vidhyamitra.com/city/seattle/1981-12-01","hi":"https://hi.vidhyamitra.com/city/seattle/1981-12-01","x-default":"https://vidhyamitra.com/city/seattle/1981-12-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T13:50:10.133Z","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":"2026-06-01T13:50:10.133Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T13:50:10.133Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}