{"id":"vidhyamitra:city-day:beijing:1981-01-06:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/beijing/1981-01-06","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-01-06","date_display":"January 6, 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":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444610.770833,"kali_year":5082,"ahargana":1856145.2708,"sun":{"sidereal_longitude":261.909,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":257.8155,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.9064,"elapsed_within_tithi_degrees":7.9064},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":257.8155,"elapsed_within_degrees":4.4822},"yoga":{"number":12,"name":"Dhruva","sum_longitude":159.7245},"karana":{"half_tithi_index":59,"name":"Nāga"},"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":1,"day":6,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444610.770833,"ahargana":1856145.2708,"kali_year":5082,"ayanamsa_lahiri":23.5878,"grahas":{"sun":{"sidereal_longitude":262.05094899999995,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":258.91564900000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false,"latitude":2.5584},"mars":{"sidereal_longitude":281.527649,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":265.754449,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":166.293049,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"venus":{"sidereal_longitude":240.12624900000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.81234900000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":112.4912,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":292.4912,"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":6,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444610.770833,"kali_year":5082,"ahargana":1856145.2708,"sun":{"sidereal_longitude":261.909,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":257.8155,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.9064,"elapsed_within_tithi_degrees":7.9064},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":257.8155,"elapsed_within_degrees":4.4822},"yoga":{"number":12,"name":"Dhruva","sum_longitude":159.7245},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.558,"elongation":4.094},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.558,"opposition_distance":175.906}},"eclipse_window_40days":[{"offset_days":14,"type":"lunar","occurs":true,"moon_latitude":-1.332,"opposition_distance":1.776}]},"city":{"slug":"beijing","name":"Beijing, Beijing","lat":39.9075,"lon":116.3972,"tz_offset_hours":8,"state":"Beijing","country":"CN","tier":"mega"},"tier2":{"city":{"slug":"beijing","name":"Beijing, Beijing","lat":39.9075,"lon":116.3972,"tz_offset_hours":8,"state":"Beijing","country":"CN","tier":"mega"},"sunriseLocal":"07:36","sunsetLocal":"17:04","solarNoonLocal":"12:20","dayLengthHours":9.461105410468633,"dayLengthDisplay":"9 Hours 27 Mins 40 Secs","nightLengthDisplay":"14 Hours 32 Mins 20 Secs","moonriseLocal":"07:27","moonsetLocal":"16:49","rahuKala":{"name":"Rāhu Kāla","start":"14:42","end":"15:53","startHours":14.703390037733389,"endHours":15.886028214041968,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:58","end":"11:09","startHours":9.972837332499072,"endHours":11.155475508807651,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:20","end":"13:31","startHours":12.33811368511623,"endHours":13.52075186142481,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:49","end":"10:08","startHours":9.815152242324594,"endHours":10.130522422673549,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"08:00","end":"08:15","startHours":8.001773705318106,"endHours":8.25406984959727,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:01","end":"12:39","startHours":12.022743504767275,"endHours":12.653483865465185,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:21","end":"06:59","startHours":6.346080258486095,"endHours":6.976820619184004,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:49","end":"07:36","startHours":6.819135529009527,"endHours":7.607560979881913,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:55","end":"14:33","startHours":13.914964586861,"endHours":14.545704947558908,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:52","end":"17:16","startHours":16.868666390350548,"endHours":17.268666390350546,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:04","end":"17:28","startHours":17.068666390350547,"endHours":17.46287911578674,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:49","end":"18:34","startHours":16.818666390350547,"endHours":18.568666390350547,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:01","end":"00:39","startHours":24.022743504767277,"endHours":24.653483865465184,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:36","end":"08:47","startHours":7.607560979881913,"endHours":8.790199156190493,"quality":"inauspicious"},{"name":"Udveg","start":"08:47","end":"09:58","startHours":8.790199156190493,"endHours":9.972837332499072,"quality":"inauspicious"},{"name":"Chala","start":"09:58","end":"11:09","startHours":9.972837332499072,"endHours":11.155475508807651,"quality":"neutral"},{"name":"Labha","start":"11:09","end":"12:20","startHours":11.155475508807651,"endHours":12.33811368511623,"quality":"auspicious"},{"name":"Amṛta","start":"12:20","end":"13:31","startHours":12.33811368511623,"endHours":13.52075186142481,"quality":"auspicious"},{"name":"Kāla","start":"13:31","end":"14:42","startHours":13.52075186142481,"endHours":14.703390037733389,"quality":"inauspicious"},{"name":"Śubha","start":"14:42","end":"15:53","startHours":14.703390037733389,"endHours":15.886028214041968,"quality":"auspicious"},{"name":"Roga","start":"15:53","end":"17:04","startHours":15.886028214041968,"endHours":17.068666390350547,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:04","end":"18:53","startHours":17.068666390350547,"endHours":18.886028214041968,"quality":"inauspicious"},{"name":"Śubha","start":"18:53","end":"20:42","startHours":18.886028214041968,"endHours":20.70339003773339,"quality":"auspicious"},{"name":"Roga","start":"20:42","end":"22:31","startHours":20.70339003773339,"endHours":22.52075186142481,"quality":"inauspicious"},{"name":"Udveg","start":"22:31","end":"00:20","startHours":22.52075186142481,"endHours":24.33811368511623,"quality":"inauspicious"},{"name":"Chala","start":"00:20","end":"02:09","startHours":24.33811368511623,"endHours":26.15547550880765,"quality":"neutral"},{"name":"Labha","start":"02:09","end":"03:58","startHours":26.15547550880765,"endHours":27.972837332499072,"quality":"auspicious"},{"name":"Amṛta","start":"03:58","end":"05:47","startHours":27.972837332499072,"endHours":29.790199156190493,"quality":"auspicious"},{"name":"Kāla","start":"05:47","end":"07:36","startHours":29.790199156190493,"endHours":31.607560979881914,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:36","end":"08:36","startHours":7.607560979881913,"endHours":8.607560979881914,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:36","end":"09:36","startHours":8.607560979881914,"endHours":9.607560979881914,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:36","end":"10:36","startHours":9.607560979881914,"endHours":10.607560979881914,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:36","end":"11:36","startHours":10.607560979881914,"endHours":11.607560979881914,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:36","end":"12:36","startHours":11.607560979881914,"endHours":12.607560979881914,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:36","end":"13:36","startHours":12.607560979881914,"endHours":13.607560979881914,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:36","end":"14:36","startHours":13.607560979881914,"endHours":14.607560979881914,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:36","end":"15:36","startHours":14.607560979881914,"endHours":15.607560979881914,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:36","end":"16:36","startHours":15.607560979881914,"endHours":16.607560979881914,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:36","end":"17:36","startHours":16.607560979881914,"endHours":17.607560979881914,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:36","end":"18:36","startHours":17.607560979881914,"endHours":18.607560979881914,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:36","end":"19:36","startHours":18.607560979881914,"endHours":19.607560979881914,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:36","end":"20:36","startHours":19.607560979881914,"endHours":20.607560979881914,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:36","end":"21:36","startHours":20.607560979881914,"endHours":21.607560979881914,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:36","end":"22:36","startHours":21.607560979881914,"endHours":22.607560979881914,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:36","end":"23:36","startHours":22.607560979881914,"endHours":23.607560979881914,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:36","end":"00:36","startHours":23.607560979881914,"endHours":24.607560979881914,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:36","end":"01:36","startHours":24.607560979881914,"endHours":25.607560979881914,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:36","end":"02:36","startHours":25.607560979881914,"endHours":26.607560979881914,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:36","end":"03:36","startHours":26.607560979881914,"endHours":27.607560979881914,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:36","end":"04:36","startHours":27.607560979881914,"endHours":28.607560979881914,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:36","end":"05:36","startHours":28.607560979881914,"endHours":29.607560979881914,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:36","end":"06:36","startHours":29.607560979881914,"endHours":30.607560979881914,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:36","end":"07:36","startHours":30.607560979881914,"endHours":31.607560979881914,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"North","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"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":-22.520166924177204,"eotMinutes":-5.875621106973772,"ayanamsa":23.5878}},"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 Amāvasyā · 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":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"beijing"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 6, 1981 CE · Beijing, Beijing · Vidhyamitra","description":"January 6, 1981 CE for Beijing, Beijing: Kṛṣṇa Amāvasyā, sūryodaya 07:36, sūryāsta 17:04.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/beijing/1981-01-06","hreflang_alternates":{"en":"https://vidhyamitra.com/city/beijing/1981-01-06","sa":"https://sa.vidhyamitra.com/city/beijing/1981-01-06","hi":"https://hi.vidhyamitra.com/city/beijing/1981-01-06","x-default":"https://vidhyamitra.com/city/beijing/1981-01-06"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T07:51:01.335Z","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":"2026-06-02T07:51:01.335Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T07:51:01.335Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}