{"id":"vidhyamitra:city-day:beijing:1981-08-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/beijing/1981-08-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-08-04","date_display":"August 4, 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":8,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444820.770833,"kali_year":5083,"ahargana":1856355.2708,"sun":{"sidereal_longitude":107.4806,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":156.5459,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":49.0653,"elapsed_within_tithi_degrees":1.0653},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":156.5459,"elapsed_within_degrees":9.8792},"yoga":{"number":20,"name":"Śiva","sum_longitude":264.0265},"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":8,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444820.770833,"ahargana":1856355.2708,"kali_year":5083,"ayanamsa_lahiri":23.5958,"grahas":{"sun":{"sidereal_longitude":107.99112500000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":155.651025,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false,"latitude":3.6931},"mars":{"sidereal_longitude":77.804325,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":101.36172499999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":163.290125,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"venus":{"sidereal_longitude":139.27302499999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":161.93602499999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":101.3643,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.3643,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"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":8,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444820.770833,"kali_year":5083,"ahargana":1856355.2708,"sun":{"sidereal_longitude":107.4806,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":156.5459,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":5,"name":"Pañcamī","paksha":"Śukla","full_name":"Śukla Pañcamī","elongation_degrees":49.0653,"elapsed_within_tithi_degrees":1.0653},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3,"moon_longitude":156.5459,"elapsed_within_degrees":9.8792},"yoga":{"number":20,"name":"Śiva","sum_longitude":264.0265},"karana":{"half_tithi_index":8,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.693,"elongation":49.065},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.693,"opposition_distance":130.935}},"eclipse_window_40days":[{"offset_days":-18,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:15","sunsetLocal":"19:25","solarNoonLocal":"12:20","dayLengthHours":14.17161335228613,"dayLengthDisplay":"14 Hours 10 Mins 18 Secs","nightLengthDisplay":"9 Hours 49 Mins 42 Secs","moonriseLocal":"09:27","moonsetLocal":"21:35","rahuKala":{"name":"Rāhu Kāla","start":"15:53","end":"17:39","startHours":15.879654429138832,"endHours":17.651106098174598,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:48","end":"10:34","startHours":8.793847752995767,"endHours":10.565299422031533,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:20","end":"14:06","startHours":12.336751091067299,"endHours":14.108202760103065,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"09:02","startHours":8.557654197124332,"endHours":9.030041308867203,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:50","end":"06:13","startHours":5.8414283046028235,"endHours":6.2193379939971205,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:52","end":"12:49","startHours":11.864363979324429,"endHours":12.80913820281017,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:22","end":"04:18","startHours":3.3613959679527508,"endHours":4.306170191438493,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:04","end":"05:15","startHours":4.069976635567057,"endHours":5.250944414924235,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:42","end":"15:39","startHours":14.698686649781656,"endHours":15.643460873267399,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"19:13","end":"19:37","startHours":19.222557767210365,"endHours":19.622557767210363,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"19:25","end":"20:01","startHours":19.422557767210364,"endHours":20.01304165688895,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"19:10","end":"20:55","startHours":19.172557767210364,"endHours":20.922557767210364,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:52","end":"00:49","startHours":23.864363979324427,"endHours":24.80913820281017,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:15","end":"07:01","startHours":5.250944414924235,"endHours":7.022396083960001,"quality":"inauspicious"},{"name":"Udveg","start":"07:01","end":"08:48","startHours":7.022396083960001,"endHours":8.793847752995767,"quality":"inauspicious"},{"name":"Chala","start":"08:48","end":"10:34","startHours":8.793847752995767,"endHours":10.565299422031533,"quality":"neutral"},{"name":"Labha","start":"10:34","end":"12:20","startHours":10.565299422031533,"endHours":12.336751091067299,"quality":"auspicious"},{"name":"Amṛta","start":"12:20","end":"14:06","startHours":12.336751091067299,"endHours":14.108202760103065,"quality":"auspicious"},{"name":"Kāla","start":"14:06","end":"15:53","startHours":14.108202760103065,"endHours":15.879654429138832,"quality":"inauspicious"},{"name":"Śubha","start":"15:53","end":"17:39","startHours":15.879654429138832,"endHours":17.651106098174598,"quality":"auspicious"},{"name":"Roga","start":"17:39","end":"19:25","startHours":17.651106098174598,"endHours":19.422557767210364,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"19:25","end":"20:39","startHours":19.422557767210364,"endHours":20.651106098174598,"quality":"inauspicious"},{"name":"Śubha","start":"20:39","end":"21:53","startHours":20.651106098174598,"endHours":21.87965442913883,"quality":"auspicious"},{"name":"Roga","start":"21:53","end":"23:06","startHours":21.87965442913883,"endHours":23.108202760103065,"quality":"inauspicious"},{"name":"Udveg","start":"23:06","end":"00:20","startHours":23.108202760103065,"endHours":24.3367510910673,"quality":"inauspicious"},{"name":"Chala","start":"00:20","end":"01:34","startHours":24.3367510910673,"endHours":25.565299422031533,"quality":"neutral"},{"name":"Labha","start":"01:34","end":"02:48","startHours":25.565299422031533,"endHours":26.793847752995767,"quality":"auspicious"},{"name":"Amṛta","start":"02:48","end":"04:01","startHours":26.793847752995767,"endHours":28.02239608396,"quality":"auspicious"},{"name":"Kāla","start":"04:01","end":"05:15","startHours":28.02239608396,"endHours":29.250944414924234,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:15","end":"06:15","startHours":5.250944414924235,"endHours":6.250944414924235,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:15","end":"07:15","startHours":6.250944414924235,"endHours":7.250944414924235,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:15","end":"08:15","startHours":7.250944414924235,"endHours":8.250944414924234,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:15","end":"09:15","startHours":8.250944414924234,"endHours":9.250944414924234,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:15","end":"10:15","startHours":9.250944414924234,"endHours":10.250944414924234,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:15","end":"11:15","startHours":10.250944414924234,"endHours":11.250944414924234,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:15","end":"12:15","startHours":11.250944414924234,"endHours":12.250944414924234,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:15","end":"13:15","startHours":12.250944414924234,"endHours":13.250944414924234,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:15","end":"14:15","startHours":13.250944414924234,"endHours":14.250944414924234,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:15","end":"15:15","startHours":14.250944414924234,"endHours":15.250944414924234,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:15","end":"16:15","startHours":15.250944414924234,"endHours":16.250944414924234,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:15","end":"17:15","startHours":16.250944414924234,"endHours":17.250944414924234,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:15","end":"18:15","startHours":17.250944414924234,"endHours":18.250944414924234,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:15","end":"19:15","startHours":18.250944414924234,"endHours":19.250944414924234,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:15","end":"20:15","startHours":19.250944414924234,"endHours":20.250944414924234,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:15","end":"21:15","startHours":20.250944414924234,"endHours":21.250944414924234,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:15","end":"22:15","startHours":21.250944414924234,"endHours":22.250944414924234,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:15","end":"23:15","startHours":22.250944414924234,"endHours":23.250944414924234,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:15","end":"00:15","startHours":23.250944414924234,"endHours":24.250944414924234,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:15","end":"01:15","startHours":24.250944414924234,"endHours":25.250944414924234,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:15","end":"02:15","startHours":25.250944414924234,"endHours":26.250944414924234,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:15","end":"03:15","startHours":26.250944414924234,"endHours":27.250944414924234,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:15","end":"04:15","startHours":27.250944414924234,"endHours":28.250944414924234,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:15","end":"05:15","startHours":28.250944414924234,"endHours":29.250944414924234,"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","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"North (Uttara)","chandraVasa":"North-West","rahuVasa":"North","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":17.306538468990336,"eotMinutes":-5.793865464037833,"ayanamsa":23.5958}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Śrāvaṇa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa 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":"beijing"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga August 4, 1981 CE · Beijing, Beijing · Vidhyamitra","description":"August 4, 1981 CE for Beijing, Beijing: Śukla Pañcamī, sūryodaya 05:15, sūryāsta 19:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/beijing/1981-08-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/beijing/1981-08-04","sa":"https://sa.vidhyamitra.com/city/beijing/1981-08-04","hi":"https://hi.vidhyamitra.com/city/beijing/1981-08-04","x-default":"https://vidhyamitra.com/city/beijing/1981-08-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T14:57:34.821Z","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":"2026-06-01T14:57:34.821Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T14:57:34.821Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}