{"id":"vidhyamitra:city-day:ranchi:1981-09-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ranchi/1981-09-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-09-04","date_display":"September 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":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444851.770833,"kali_year":5083,"ahargana":1856386.2708,"sun":{"sidereal_longitude":137.1803,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":202.132,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.9517,"elapsed_within_tithi_degrees":4.9517},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":202.132,"elapsed_within_degrees":2.132},"yoga":{"number":26,"name":"Indra","sum_longitude":339.3123},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":9,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444851.770833,"ahargana":1856386.2708,"kali_year":5083,"ayanamsa_lahiri":23.597,"grahas":{"sun":{"sidereal_longitude":137.83374100000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":200.35144100000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false,"latitude":4.3946},"mars":{"sidereal_longitude":97.903141,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":158.26404100000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":168.995541,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"venus":{"sidereal_longitude":176.19724100000008,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":165.08684100000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":99.7218,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":279.7218,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","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":9,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444851.770833,"kali_year":5083,"ahargana":1856386.2708,"sun":{"sidereal_longitude":137.1803,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":202.132,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":64.9517,"elapsed_within_tithi_degrees":4.9517},"nakshatra":{"number":16,"name":"Viśākhā","pada":1,"moon_longitude":202.132,"elapsed_within_degrees":2.132},"yoga":{"number":26,"name":"Indra","sum_longitude":339.3123},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.395,"elongation":64.952},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.395,"opposition_distance":115.048}},"eclipse_window_40days":[]},"city":{"slug":"ranchi","name":"Ranchi, Jharkhand","lat":23.3441,"lon":85.3096,"tz_offset_hours":5.5,"state":"Jharkhand","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"ranchi","name":"Ranchi, Jharkhand","lat":23.3441,"lon":85.3096,"tz_offset_hours":5.5,"state":"Jharkhand","country":"IN","tier":"tier-1"},"sunriseLocal":"05:31","sunsetLocal":"18:04","solarNoonLocal":"11:47","dayLengthHours":12.54339182958702,"dayLengthDisplay":"12 Hours 32 Mins 36 Secs","nightLengthDisplay":"11 Hours 27 Mins 24 Secs","moonriseLocal":"10:23","moonsetLocal":"21:32","rahuKala":{"name":"Rāhu Kāla","start":"10:13","end":"11:47","startHours":10.21980541968069,"endHours":11.787729398379067,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:55","end":"16:29","startHours":14.92357735577582,"endHours":16.491501334474197,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:05","end":"08:39","startHours":7.083957462283934,"endHours":8.651881440982311,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:27","end":"08:52","startHours":8.442824910489195,"endHours":8.860937971475428,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:02","end":"06:22","startHours":6.03867480981835,"endHours":6.373165258607337,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:22","end":"12:12","startHours":11.36961633739283,"endHours":12.2058424593653,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:51","end":"04:41","startHours":3.8435812396406206,"endHours":4.679807361613089,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:28","end":"05:31","startHours":4.470750831119972,"endHours":5.516033483585557,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:53","end":"14:43","startHours":13.878294703310235,"endHours":14.714520825282703,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:52","end":"18:16","startHours":17.859425313172576,"endHours":18.259425313172574,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:04","end":"18:35","startHours":18.059425313172575,"endHours":18.58206663940537,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:49","end":"19:34","startHours":17.809425313172575,"endHours":19.559425313172575,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:22","end":"00:12","startHours":23.36961633739283,"endHours":24.205842459365297,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:31","end":"07:05","startHours":5.516033483585557,"endHours":7.083957462283934,"quality":"neutral"},{"name":"Labha","start":"07:05","end":"08:39","startHours":7.083957462283934,"endHours":8.651881440982311,"quality":"auspicious"},{"name":"Amṛta","start":"08:39","end":"10:13","startHours":8.651881440982311,"endHours":10.21980541968069,"quality":"auspicious"},{"name":"Kāla","start":"10:13","end":"11:47","startHours":10.21980541968069,"endHours":11.787729398379067,"quality":"inauspicious"},{"name":"Śubha","start":"11:47","end":"13:21","startHours":11.787729398379067,"endHours":13.355653377077445,"quality":"auspicious"},{"name":"Roga","start":"13:21","end":"14:55","startHours":13.355653377077445,"endHours":14.92357735577582,"quality":"inauspicious"},{"name":"Udveg","start":"14:55","end":"16:29","startHours":14.92357735577582,"endHours":16.491501334474197,"quality":"inauspicious"},{"name":"Chala","start":"16:29","end":"18:04","startHours":16.491501334474197,"endHours":18.059425313172575,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:04","end":"19:29","startHours":18.059425313172575,"endHours":19.491501334474197,"quality":"inauspicious"},{"name":"Udveg","start":"19:29","end":"20:55","startHours":19.491501334474197,"endHours":20.92357735577582,"quality":"inauspicious"},{"name":"Chala","start":"20:55","end":"22:21","startHours":20.92357735577582,"endHours":22.355653377077445,"quality":"neutral"},{"name":"Labha","start":"22:21","end":"23:47","startHours":22.355653377077445,"endHours":23.787729398379064,"quality":"auspicious"},{"name":"Amṛta","start":"23:47","end":"01:13","startHours":23.787729398379064,"endHours":25.21980541968069,"quality":"auspicious"},{"name":"Kāla","start":"01:13","end":"02:39","startHours":25.21980541968069,"endHours":26.65188144098231,"quality":"inauspicious"},{"name":"Śubha","start":"02:39","end":"04:05","startHours":26.65188144098231,"endHours":28.083957462283934,"quality":"auspicious"},{"name":"Roga","start":"04:05","end":"05:31","startHours":28.083957462283934,"endHours":29.516033483585556,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:31","end":"06:31","startHours":5.516033483585557,"endHours":6.516033483585557,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:31","end":"07:31","startHours":6.516033483585557,"endHours":7.516033483585557,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:31","end":"08:31","startHours":7.516033483585557,"endHours":8.516033483585556,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:31","end":"09:31","startHours":8.516033483585556,"endHours":9.516033483585556,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:31","end":"10:31","startHours":9.516033483585556,"endHours":10.516033483585556,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:31","end":"11:31","startHours":10.516033483585556,"endHours":11.516033483585556,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:31","end":"12:31","startHours":11.516033483585556,"endHours":12.516033483585556,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:31","end":"13:31","startHours":12.516033483585556,"endHours":13.516033483585556,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:31","end":"14:31","startHours":13.516033483585556,"endHours":14.516033483585556,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:31","end":"15:31","startHours":14.516033483585556,"endHours":15.516033483585556,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:31","end":"16:31","startHours":15.516033483585556,"endHours":16.516033483585556,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:31","end":"17:31","startHours":16.516033483585556,"endHours":17.516033483585556,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:31","end":"18:31","startHours":17.516033483585556,"endHours":18.516033483585556,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:31","end":"19:31","startHours":18.516033483585556,"endHours":19.516033483585556,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:31","end":"20:31","startHours":19.516033483585556,"endHours":20.516033483585556,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:31","end":"21:31","startHours":20.516033483585556,"endHours":21.516033483585556,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:31","end":"22:31","startHours":21.516033483585556,"endHours":22.516033483585556,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:31","end":"23:31","startHours":22.516033483585556,"endHours":23.516033483585556,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:31","end":"00:31","startHours":23.516033483585556,"endHours":24.516033483585556,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:31","end":"01:31","startHours":24.516033483585556,"endHours":25.516033483585556,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:31","end":"02:31","startHours":25.516033483585556,"endHours":26.516033483585556,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:31","end":"03:31","startHours":26.516033483585556,"endHours":27.516033483585556,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:31","end":"04:31","startHours":27.516033483585556,"endHours":28.516033483585556,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:31","end":"05:31","startHours":28.516033483585556,"endHours":29.516033483585556,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"West (Paścim)","chandraVasa":"North","rahuVasa":"South-East","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":7.2765249955190106,"eotMinutes":1.4978360972560227,"ayanamsa":23.597}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Ṣaṣṭhī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"subrahmanya-shashthi","name":"Subrahmaṇya Ṣaṣṭhī","name_sanskrit":"सुब्रह्मण्य षष्ठी","tradition":"Shaiva","associated_deity":"Kārttikeya","significance":"Worship of Kārttikeya as Subrahmaṇya.","vrata":true,"detection":{"tithi_number":6,"tithi_paksha":"Śukla","lunar_month":"Bhādrapada"},"precedence":4}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"ranchi"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga September 4, 1981 CE · Ranchi, Jharkhand · Vidhyamitra","description":"September 4, 1981 CE for Ranchi, Jharkhand: Śukla Ṣaṣṭhī, sūryodaya 05:31, sūryāsta 18:04.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ranchi/1981-09-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ranchi/1981-09-04","sa":"https://sa.vidhyamitra.com/city/ranchi/1981-09-04","hi":"https://hi.vidhyamitra.com/city/ranchi/1981-09-04","x-default":"https://vidhyamitra.com/city/ranchi/1981-09-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T02:18:51.973Z","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":"2026-05-31T02:18:51.973Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T02:18:51.973Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}