{"id":"vidhyamitra:city-day:ranchi:2025-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ranchi/2025-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2025-12-18","date_display":"December 18, 2025 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":2025,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461027.770833,"kali_year":5127,"ahargana":1872562.2708,"sun":{"sidereal_longitude":241.7205,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":218.6398,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":336.9193,"elapsed_within_tithi_degrees":0.9193},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":218.6398,"elapsed_within_degrees":5.3064},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":100.3602},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2025,"month":12,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2461027.770833,"ahargana":1872562.2708,"kali_year":5127,"ayanamsa_lahiri":24.2157,"grahas":{"sun":{"sidereal_longitude":242.142699,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":219.95939899999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false,"latitude":-4.3661},"mars":{"sidereal_longitude":247.47199899999998,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":223.396699,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":88.69379900000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":true},"venus":{"sidereal_longitude":237.09219900000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":331.37979900000005,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":322.6395,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":142.6395,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"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":2025,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2461027.770833,"kali_year":5127,"ahargana":1872562.2708,"sun":{"sidereal_longitude":241.7205,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":218.6398,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":29,"name":"Caturdaśī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturdaśī","elongation_degrees":336.9193,"elapsed_within_tithi_degrees":0.9193},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":218.6398,"elapsed_within_degrees":5.3064},"yoga":{"number":8,"name":"Dhṛti","sum_longitude":100.3602},"karana":{"half_tithi_index":56,"name":"Viṣṭi"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.366,"elongation":23.081},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.366,"opposition_distance":156.919}},"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":"06:25","sunsetLocal":"17:07","solarNoonLocal":"11:46","dayLengthHours":10.6996997191753,"dayLengthDisplay":"10 Hours 41 Mins 59 Secs","nightLengthDisplay":"13 Hours 18 Mins 01 Secs","moonriseLocal":"04:53","moonsetLocal":"15:42","rahuKala":{"name":"Rāhu Kāla","start":"13:06","end":"14:26","startHours":13.103693675761225,"endHours":14.441156140658137,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:25","end":"07:45","startHours":6.416381351276661,"endHours":7.753843816173574,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:05","end":"10:26","startHours":9.091306281070487,"endHours":10.4287687459674,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:16","startHours":8.912977952417565,"endHours":9.269634609723408,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:52","end":"07:09","startHours":6.862202172908965,"endHours":7.14752749875364,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:25","end":"12:07","startHours":11.40957455355847,"endHours":12.122887868170155,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:59","end":"05:42","startHours":4.989754722053288,"endHours":5.703068036664975,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:31","end":"06:25","startHours":5.524739708012053,"endHours":6.416381351276661,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:33","end":"14:16","startHours":13.549514497393528,"endHours":14.262827812005215,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:55","end":"17:19","startHours":16.916081070451963,"endHours":17.31608107045196,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:07","end":"17:34","startHours":17.116081070451962,"endHours":17.561901892084265,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:52","end":"18:37","startHours":16.866081070451962,"endHours":18.616081070451962,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:25","end":"00:07","startHours":23.409574553558468,"endHours":24.122887868170157,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:25","end":"07:45","startHours":6.416381351276661,"endHours":7.753843816173574,"quality":"auspicious"},{"name":"Roga","start":"07:45","end":"09:05","startHours":7.753843816173574,"endHours":9.091306281070487,"quality":"inauspicious"},{"name":"Udveg","start":"09:05","end":"10:26","startHours":9.091306281070487,"endHours":10.4287687459674,"quality":"inauspicious"},{"name":"Chala","start":"10:26","end":"11:46","startHours":10.4287687459674,"endHours":11.766231210864312,"quality":"neutral"},{"name":"Labha","start":"11:46","end":"13:06","startHours":11.766231210864312,"endHours":13.103693675761225,"quality":"auspicious"},{"name":"Amṛta","start":"13:06","end":"14:26","startHours":13.103693675761225,"endHours":14.441156140658137,"quality":"auspicious"},{"name":"Kāla","start":"14:26","end":"15:47","startHours":14.441156140658137,"endHours":15.77861860555505,"quality":"inauspicious"},{"name":"Śubha","start":"15:47","end":"17:07","startHours":15.77861860555505,"endHours":17.116081070451962,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:07","end":"18:47","startHours":17.116081070451962,"endHours":18.77861860555505,"quality":"auspicious"},{"name":"Kāla","start":"18:47","end":"20:26","startHours":18.77861860555505,"endHours":20.441156140658137,"quality":"inauspicious"},{"name":"Śubha","start":"20:26","end":"22:06","startHours":20.441156140658137,"endHours":22.103693675761225,"quality":"auspicious"},{"name":"Roga","start":"22:06","end":"23:46","startHours":22.103693675761225,"endHours":23.766231210864312,"quality":"inauspicious"},{"name":"Udveg","start":"23:46","end":"01:26","startHours":23.766231210864312,"endHours":25.4287687459674,"quality":"inauspicious"},{"name":"Chala","start":"01:26","end":"03:05","startHours":25.4287687459674,"endHours":27.091306281070487,"quality":"neutral"},{"name":"Labha","start":"03:05","end":"04:45","startHours":27.091306281070487,"endHours":28.753843816173575,"quality":"auspicious"},{"name":"Amṛta","start":"04:45","end":"06:25","startHours":28.753843816173575,"endHours":30.416381351276662,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:25","end":"07:25","startHours":6.416381351276661,"endHours":7.416381351276661,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:25","end":"08:25","startHours":7.416381351276661,"endHours":8.416381351276662,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:25","end":"09:25","startHours":8.416381351276662,"endHours":9.416381351276662,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:25","end":"10:25","startHours":9.416381351276662,"endHours":10.416381351276662,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:25","end":"11:25","startHours":10.416381351276662,"endHours":11.416381351276662,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:25","end":"12:25","startHours":11.416381351276662,"endHours":12.416381351276662,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:25","end":"13:25","startHours":12.416381351276662,"endHours":13.416381351276662,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:25","end":"14:25","startHours":13.416381351276662,"endHours":14.416381351276662,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:25","end":"15:25","startHours":14.416381351276662,"endHours":15.416381351276662,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:25","end":"16:25","startHours":15.416381351276662,"endHours":16.416381351276662,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:25","end":"17:25","startHours":16.416381351276662,"endHours":17.416381351276662,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:25","end":"18:25","startHours":17.416381351276662,"endHours":18.416381351276662,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:25","end":"19:25","startHours":18.416381351276662,"endHours":19.416381351276662,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:25","end":"20:25","startHours":19.416381351276662,"endHours":20.416381351276662,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:25","end":"21:25","startHours":20.416381351276662,"endHours":21.416381351276662,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:25","end":"22:25","startHours":21.416381351276662,"endHours":22.416381351276662,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:25","end":"23:25","startHours":22.416381351276662,"endHours":23.416381351276662,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:25","end":"00:25","startHours":23.416381351276662,"endHours":24.416381351276662,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:25","end":"01:25","startHours":24.416381351276662,"endHours":25.416381351276662,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:25","end":"02:25","startHours":25.416381351276662,"endHours":26.416381351276662,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:25","end":"03:25","startHours":26.416381351276662,"endHours":27.416381351276662,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:25","end":"04:25","startHours":27.416381351276662,"endHours":28.416381351276662,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:25","end":"05:25","startHours":28.416381351276662,"endHours":29.416381351276662,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:25","end":"06:25","startHours":29.416381351276662,"endHours":30.416381351276662,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North-East","rahuVasa":"North-West","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.386359592590527,"eotMinutes":2.787727348141232,"ayanamsa":24.2157}},"calendars":{"vikram_samvat":2082,"vikram_samvatsara":"Kālayukta","saka_samvat":1947,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1432,"malayalam_era":1201,"nanakshahi_year":556,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Caturdaśī · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5},{"id":"masika-shivaratri","name":"Māsika Śivarātri","name_sanskrit":"मासिक शिवरात्रि","tradition":"Shaiva","associated_deity":"Śiva","significance":"Monthly Śiva observance.","vrata":true,"detection":{"tithi_number":29,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"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 December 18, 2025 CE · Ranchi, Jharkhand · Vidhyamitra","description":"December 18, 2025 CE for Ranchi, Jharkhand: Kṛṣṇa Caturdaśī, sūryodaya 06:25, sūryāsta 17:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ranchi/2025-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ranchi/2025-12-18","sa":"https://sa.vidhyamitra.com/city/ranchi/2025-12-18","hi":"https://hi.vidhyamitra.com/city/ranchi/2025-12-18","x-default":"https://vidhyamitra.com/city/ranchi/2025-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T22:10:48.331Z","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":"2026-05-14T22:10:48.331Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T22:10:48.331Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}