{"id":"vidhyamitra:city-day:ranchi:1981-05-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ranchi/1981-05-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-05-04","date_display":"May 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":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444728.770833,"kali_year":5083,"ahargana":1856263.2708,"sun":{"sidereal_longitude":19.9951,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":17.7649,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":357.7698,"elapsed_within_tithi_degrees":9.7698},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.7649,"elapsed_within_degrees":4.4316},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":37.76},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":5,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444728.770833,"ahargana":1856263.2708,"kali_year":5083,"ayanamsa_lahiri":23.5923,"grahas":{"sun":{"sidereal_longitude":19.907339999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":17.951540000000023,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false,"latitude":-4.4984},"mars":{"sidereal_longitude":13.182439999999986,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":27.562940000000026,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":157.83794,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":27.106240000000014,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":160.01764000000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":106.2389,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":286.2389,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":5,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444728.770833,"kali_year":5083,"ahargana":1856263.2708,"sun":{"sidereal_longitude":19.9951,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":17.7649,"rashi":1,"rashi_name":"Meṣa"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":357.7698,"elapsed_within_tithi_degrees":9.7698},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2,"moon_longitude":17.7649,"elapsed_within_degrees":4.4316},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":37.76},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.498,"elongation":2.23},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.498,"opposition_distance":177.77}},"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":"05:13","sunsetLocal":"18:18","solarNoonLocal":"11:46","dayLengthHours":13.067760815106183,"dayLengthDisplay":"13 Hours 04 Mins 04 Secs","nightLengthDisplay":"10 Hours 55 Mins 56 Secs","moonriseLocal":"05:08","moonsetLocal":"18:07","rahuKala":{"name":"Rāhu Kāla","start":"06:51","end":"08:29","startHours":6.857975400700517,"endHours":8.491445502588789,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:07","end":"11:46","startHours":10.124915604477064,"endHours":11.758385706365335,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:24","end":"15:02","startHours":13.39185580825361,"endHours":15.02532591014188,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:16","end":"08:43","startHours":8.273649489003686,"endHours":8.709241516173893,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:46","end":"06:07","startHours":5.768995332775002,"endHours":6.117468954511167,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:19","end":"12:12","startHours":11.32279367919513,"endHours":12.19397773353554,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:29","end":"04:21","startHours":3.4821371901314198,"endHours":4.353321244471831,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:08","end":"05:13","startHours":4.135525230886729,"endHours":5.224505298812244,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:56","end":"14:48","startHours":13.936345842216365,"endHours":14.807529896556778,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:06","end":"18:30","startHours":18.092266113918427,"endHours":18.492266113918426,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:18","end":"18:50","startHours":18.292266113918426,"endHours":18.836756147881182,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:03","end":"19:48","startHours":18.042266113918426,"endHours":19.792266113918426,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:19","end":"00:12","startHours":23.32279367919513,"endHours":24.19397773353554,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:13","end":"06:51","startHours":5.224505298812244,"endHours":6.857975400700517,"quality":"auspicious"},{"name":"Kāla","start":"06:51","end":"08:29","startHours":6.857975400700517,"endHours":8.491445502588789,"quality":"inauspicious"},{"name":"Śubha","start":"08:29","end":"10:07","startHours":8.491445502588789,"endHours":10.124915604477064,"quality":"auspicious"},{"name":"Roga","start":"10:07","end":"11:46","startHours":10.124915604477064,"endHours":11.758385706365335,"quality":"inauspicious"},{"name":"Udveg","start":"11:46","end":"13:24","startHours":11.758385706365335,"endHours":13.39185580825361,"quality":"inauspicious"},{"name":"Chala","start":"13:24","end":"15:02","startHours":13.39185580825361,"endHours":15.02532591014188,"quality":"neutral"},{"name":"Labha","start":"15:02","end":"16:40","startHours":15.02532591014188,"endHours":16.658796012030155,"quality":"auspicious"},{"name":"Amṛta","start":"16:40","end":"18:18","startHours":16.658796012030155,"endHours":18.292266113918426,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:18","end":"19:40","startHours":18.292266113918426,"endHours":19.65879601203015,"quality":"neutral"},{"name":"Labha","start":"19:40","end":"21:02","startHours":19.65879601203015,"endHours":21.02532591014188,"quality":"auspicious"},{"name":"Amṛta","start":"21:02","end":"22:24","startHours":21.02532591014188,"endHours":22.39185580825361,"quality":"auspicious"},{"name":"Kāla","start":"22:24","end":"23:46","startHours":22.39185580825361,"endHours":23.758385706365335,"quality":"inauspicious"},{"name":"Śubha","start":"23:46","end":"01:07","startHours":23.758385706365335,"endHours":25.12491560447706,"quality":"auspicious"},{"name":"Roga","start":"01:07","end":"02:29","startHours":25.12491560447706,"endHours":26.49144550258879,"quality":"inauspicious"},{"name":"Udveg","start":"02:29","end":"03:51","startHours":26.49144550258879,"endHours":27.857975400700518,"quality":"inauspicious"},{"name":"Chala","start":"03:51","end":"05:13","startHours":27.857975400700518,"endHours":29.224505298812243,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:13","end":"06:13","startHours":5.224505298812244,"endHours":6.224505298812244,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:13","end":"07:13","startHours":6.224505298812244,"endHours":7.224505298812244,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:13","end":"08:13","startHours":7.224505298812244,"endHours":8.224505298812243,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:13","end":"09:13","startHours":8.224505298812243,"endHours":9.224505298812243,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:13","end":"10:13","startHours":9.224505298812243,"endHours":10.224505298812243,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:13","end":"11:13","startHours":10.224505298812243,"endHours":11.224505298812243,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:13","end":"12:13","startHours":11.224505298812243,"endHours":12.224505298812243,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:13","end":"13:13","startHours":12.224505298812243,"endHours":13.224505298812243,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:13","end":"14:13","startHours":13.224505298812243,"endHours":14.224505298812243,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:13","end":"15:13","startHours":14.224505298812243,"endHours":15.224505298812243,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:13","end":"16:13","startHours":15.224505298812243,"endHours":16.224505298812243,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:13","end":"17:13","startHours":16.224505298812243,"endHours":17.224505298812243,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:13","end":"18:13","startHours":17.224505298812243,"endHours":18.224505298812243,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:13","end":"19:13","startHours":18.224505298812243,"endHours":19.224505298812243,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:13","end":"20:13","startHours":19.224505298812243,"endHours":20.224505298812243,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:13","end":"21:13","startHours":20.224505298812243,"endHours":21.224505298812243,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:13","end":"22:13","startHours":21.224505298812243,"endHours":22.224505298812243,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:13","end":"23:13","startHours":22.224505298812243,"endHours":23.224505298812243,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:13","end":"00:13","startHours":23.224505298812243,"endHours":24.224505298812243,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:13","end":"01:13","startHours":24.224505298812243,"endHours":25.224505298812243,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:13","end":"02:13","startHours":25.224505298812243,"endHours":26.224505298812243,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:13","end":"03:13","startHours":26.224505298812243,"endHours":27.224505298812243,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:13","end":"04:13","startHours":27.224505298812243,"endHours":28.224505298812243,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:13","end":"05:13","startHours":28.224505298812243,"endHours":29.224505298812243,"planetary_lord":"Venus"}],"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":["Meṣa","Mithuna","Kanyā","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Karka","Siṃha","Vṛścika","Dhanu","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":15.889272495971255,"eotMinutes":3.258457618079846,"ayanamsa":23.5923}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Kṛṣṇa Amāvasyā · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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":"ranchi"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga May 4, 1981 CE · Ranchi, Jharkhand · Vidhyamitra","description":"May 4, 1981 CE for Ranchi, Jharkhand: Kṛṣṇa Amāvasyā, sūryodaya 05:13, sūryāsta 18:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ranchi/1981-05-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ranchi/1981-05-04","sa":"https://sa.vidhyamitra.com/city/ranchi/1981-05-04","hi":"https://hi.vidhyamitra.com/city/ranchi/1981-05-04","x-default":"https://vidhyamitra.com/city/ranchi/1981-05-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T10:13:17.243Z","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":"2026-05-18T10:13:17.243Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T10:13:17.243Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}