{"id":"vidhyamitra:city-day:beijing:1980-01-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/beijing/1980-01-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1980-01-01","date_display":"January 1, 1980 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":1980,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444239.770833,"kali_year":5081,"ahargana":1855774.2708,"sun":{"sidereal_longitude":256.0066,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":61.1473,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.1408,"elapsed_within_tithi_degrees":9.1408},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":61.1473,"elapsed_within_degrees":7.814},"yoga":{"number":24,"name":"Śukla","sum_longitude":317.1539},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"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":1980,"month":1,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444239.770833,"ahargana":1855774.2708,"kali_year":5081,"ayanamsa_lahiri":23.5736,"grahas":{"sun":{"sidereal_longitude":256.196824,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":60.11202400000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false,"latitude":-4.2544},"mars":{"sidereal_longitude":140.69712400000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":244.71302400000002,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":136.39142400000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":true},"venus":{"sidereal_longitude":288.160624,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":153.22912399999996,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":132.1485,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":312.1485,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"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":1980,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444239.770833,"kali_year":5081,"ahargana":1855774.2708,"sun":{"sidereal_longitude":256.0066,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":61.1473,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":165.1408,"elapsed_within_tithi_degrees":9.1408},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3,"moon_longitude":61.1473,"elapsed_within_degrees":7.814},"yoga":{"number":24,"name":"Śukla","sum_longitude":317.1539},"karana":{"half_tithi_index":27,"name":"Vaṇija"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.254,"elongation":165.141},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.254,"opposition_distance":14.859}},"eclipse_window_40days":[]},"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":"07:37","sunsetLocal":"17:00","solarNoonLocal":"12:18","dayLengthHours":9.384390745677841,"dayLengthDisplay":"9 Hours 23 Mins 04 Secs","nightLengthDisplay":"14 Hours 36 Mins 56 Secs","moonriseLocal":"15:46","moonsetLocal":"06:42","rahuKala":{"name":"Rāhu Kāla","start":"14:39","end":"15:49","startHours":14.648037325142727,"endHours":15.821086168352458,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:57","end":"11:08","startHours":9.955841952303807,"endHours":11.128890795513538,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:18","end":"13:28","startHours":12.301939638723269,"endHours":13.474988481932998,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:48","end":"10:07","startHours":9.799435439875843,"endHours":10.112248464731772,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"08:00","end":"08:15","startHours":8.000760546954258,"endHours":8.251010966839,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:37","startHours":11.989126613867342,"endHours":12.614752663579196,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"06:22","end":"06:59","startHours":6.3584921664606355,"endHours":6.984118216172491,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:50","end":"07:37","startHours":6.827711703744527,"endHours":7.6097442658843475,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:52","end":"14:29","startHours":13.866004763002909,"endHours":14.491630812714765,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:48","end":"17:12","startHours":16.79413501156219,"endHours":17.19413501156219,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:00","end":"17:23","startHours":16.99413501156219,"endHours":17.3851512926321,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:45","end":"18:30","startHours":16.74413501156219,"endHours":18.49413501156219,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:37","startHours":23.98912661386734,"endHours":24.614752663579196,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"07:37","end":"08:47","startHours":7.6097442658843475,"endHours":8.782793109094078,"quality":"inauspicious"},{"name":"Udveg","start":"08:47","end":"09:57","startHours":8.782793109094078,"endHours":9.955841952303807,"quality":"inauspicious"},{"name":"Chala","start":"09:57","end":"11:08","startHours":9.955841952303807,"endHours":11.128890795513538,"quality":"neutral"},{"name":"Labha","start":"11:08","end":"12:18","startHours":11.128890795513538,"endHours":12.301939638723269,"quality":"auspicious"},{"name":"Amṛta","start":"12:18","end":"13:28","startHours":12.301939638723269,"endHours":13.474988481932998,"quality":"auspicious"},{"name":"Kāla","start":"13:28","end":"14:39","startHours":13.474988481932998,"endHours":14.648037325142727,"quality":"inauspicious"},{"name":"Śubha","start":"14:39","end":"15:49","startHours":14.648037325142727,"endHours":15.821086168352458,"quality":"auspicious"},{"name":"Roga","start":"15:49","end":"17:00","startHours":15.821086168352458,"endHours":16.99413501156219,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:00","end":"18:49","startHours":16.99413501156219,"endHours":18.82108616835246,"quality":"inauspicious"},{"name":"Śubha","start":"18:49","end":"20:39","startHours":18.82108616835246,"endHours":20.64803732514273,"quality":"auspicious"},{"name":"Roga","start":"20:39","end":"22:28","startHours":20.64803732514273,"endHours":22.474988481933,"quality":"inauspicious"},{"name":"Udveg","start":"22:28","end":"00:18","startHours":22.474988481933,"endHours":24.30193963872327,"quality":"inauspicious"},{"name":"Chala","start":"00:18","end":"02:08","startHours":24.30193963872327,"endHours":26.128890795513538,"quality":"neutral"},{"name":"Labha","start":"02:08","end":"03:57","startHours":26.128890795513538,"endHours":27.955841952303807,"quality":"auspicious"},{"name":"Amṛta","start":"03:57","end":"05:47","startHours":27.955841952303807,"endHours":29.78279310909408,"quality":"auspicious"},{"name":"Kāla","start":"05:47","end":"07:37","startHours":29.78279310909408,"endHours":31.60974426588435,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"07:37","end":"08:37","startHours":7.6097442658843475,"endHours":8.609744265884348,"planetary_lord":"Mars"},{"name":"Hora 2","start":"08:37","end":"09:37","startHours":8.609744265884348,"endHours":9.609744265884348,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"09:37","end":"10:37","startHours":9.609744265884348,"endHours":10.609744265884348,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"10:37","end":"11:37","startHours":10.609744265884348,"endHours":11.609744265884348,"planetary_lord":"Moon"},{"name":"Hora 5","start":"11:37","end":"12:37","startHours":11.609744265884348,"endHours":12.609744265884348,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"12:37","end":"13:37","startHours":12.609744265884348,"endHours":13.609744265884348,"planetary_lord":"Venus"},{"name":"Hora 7","start":"13:37","end":"14:37","startHours":13.609744265884348,"endHours":14.609744265884348,"planetary_lord":"Sun"},{"name":"Hora 8","start":"14:37","end":"15:37","startHours":14.609744265884348,"endHours":15.609744265884348,"planetary_lord":"Mars"},{"name":"Hora 9","start":"15:37","end":"16:37","startHours":15.609744265884348,"endHours":16.60974426588435,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"16:37","end":"17:37","startHours":16.60974426588435,"endHours":17.60974426588435,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"17:37","end":"18:37","startHours":17.60974426588435,"endHours":18.60974426588435,"planetary_lord":"Moon"},{"name":"Hora 12","start":"18:37","end":"19:37","startHours":18.60974426588435,"endHours":19.60974426588435,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"19:37","end":"20:37","startHours":19.60974426588435,"endHours":20.60974426588435,"planetary_lord":"Venus"},{"name":"Hora 14","start":"20:37","end":"21:37","startHours":20.60974426588435,"endHours":21.60974426588435,"planetary_lord":"Sun"},{"name":"Hora 15","start":"21:37","end":"22:37","startHours":21.60974426588435,"endHours":22.60974426588435,"planetary_lord":"Mars"},{"name":"Hora 16","start":"22:37","end":"23:37","startHours":22.60974426588435,"endHours":23.60974426588435,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"23:37","end":"00:37","startHours":23.60974426588435,"endHours":24.60974426588435,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"00:37","end":"01:37","startHours":24.60974426588435,"endHours":25.60974426588435,"planetary_lord":"Moon"},{"name":"Hora 19","start":"01:37","end":"02:37","startHours":25.60974426588435,"endHours":26.60974426588435,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"02:37","end":"03:37","startHours":26.60974426588435,"endHours":27.60974426588435,"planetary_lord":"Venus"},{"name":"Hora 21","start":"03:37","end":"04:37","startHours":27.60974426588435,"endHours":28.60974426588435,"planetary_lord":"Sun"},{"name":"Hora 22","start":"04:37","end":"05:37","startHours":28.60974426588435,"endHours":29.60974426588435,"planetary_lord":"Mars"},{"name":"Hora 23","start":"05:37","end":"06:37","startHours":29.60974426588435,"endHours":30.60974426588435,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"06:37","end":"07:37","startHours":30.60974426588435,"endHours":31.60974426588435,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Mānasa","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":-23.07673575109095,"eotMinutes":-3.705178323396069,"ayanamsa":23.5736}},"calendars":{"vikram_samvat":2037,"vikram_samvatsara":"Śrīmukha","saka_samvat":1902,"saka_samvatsara":"Raudra","bengali_samvat":1387,"malayalam_era":1156,"nanakshahi_year":511,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","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 Śukla Caturdaśī · Vikram 2037 Śrīmukha · Śaka 1902 Raudra"},"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":"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 1, 1980 CE · Beijing, Beijing · Vidhyamitra","description":"January 1, 1980 CE for Beijing, Beijing: Śukla Caturdaśī, sūryodaya 07:37, sūryāsta 17:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/beijing/1980-01-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/beijing/1980-01-01","sa":"https://sa.vidhyamitra.com/city/beijing/1980-01-01","hi":"https://hi.vidhyamitra.com/city/beijing/1980-01-01","x-default":"https://vidhyamitra.com/city/beijing/1980-01-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T05:22:25.937Z","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":"2026-06-02T05:22:25.937Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T05:22:25.937Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}