{"id":"vidhyamitra:city-day:ranchi:2015-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ranchi/2015-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2015-12-18","date_display":"December 18, 2015 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":2015,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457374.770833,"kali_year":5117,"ahargana":1868909.2708,"sun":{"sidereal_longitude":241.2971,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":324.4666,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":83.1695,"elapsed_within_tithi_degrees":11.1695},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":324.4666,"elapsed_within_degrees":4.4666},"yoga":{"number":16,"name":"Siddhi","sum_longitude":205.7637},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"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":2015,"month":12,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2457374.770833,"ahargana":1868909.2708,"kali_year":5117,"ayanamsa_lahiri":24.076,"grahas":{"sun":{"sidereal_longitude":241.69957,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":323.97917000000007,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false,"latitude":0.9137},"mars":{"sidereal_longitude":176.37667,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":257.8612700000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":147.72487,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"venus":{"sidereal_longitude":200.94066999999995,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":225.27187000000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":156.193,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":336.193,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","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":2015,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2457374.770833,"kali_year":5117,"ahargana":1868909.2708,"sun":{"sidereal_longitude":241.2971,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":324.4666,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":7,"name":"Saptamī","paksha":"Śukla","full_name":"Śukla Saptamī","elongation_degrees":83.1695,"elapsed_within_tithi_degrees":11.1695},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":324.4666,"elapsed_within_degrees":4.4666},"yoga":{"number":16,"name":"Siddhi","sum_longitude":205.7637},"karana":{"half_tithi_index":13,"name":"Vaṇija"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.914,"elongation":83.169},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.914,"opposition_distance":96.831}},"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":10.700882599912035,"dayLengthDisplay":"10 Hours 42 Mins 03 Secs","nightLengthDisplay":"13 Hours 17 Mins 57 Secs","moonriseLocal":"11:21","moonsetLocal":"23:09","rahuKala":{"name":"Rāhu Kāla","start":"10:26","end":"11:46","startHours":10.428620885875308,"endHours":11.766231210864312,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:26","end":"15:47","startHours":14.44145186084232,"endHours":15.779062185831325,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:45","end":"09:05","startHours":7.7534002358973,"endHours":9.091010560886303,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:55","end":"09:16","startHours":8.912662517554438,"endHours":9.269358604218171,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:52","end":"07:09","startHours":6.861660019237964,"endHours":7.147016888568952,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:25","end":"12:07","startHours":11.409535124200577,"endHours":12.122927297528047,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:59","end":"05:42","startHours":4.9890055642533575,"endHours":5.702397737580827,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:31","end":"06:25","startHours":5.524049694248959,"endHours":6.415789910908296,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:33","end":"14:16","startHours":13.549711644182985,"endHours":14.263103817510453,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:55","end":"17:19","startHours":16.91667251082033,"endHours":17.31667251082033,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:07","end":"17:34","startHours":17.11667251082033,"endHours":17.562542619149998,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:52","end":"18:37","startHours":16.86667251082033,"endHours":18.61667251082033,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:25","end":"00:07","startHours":23.409535124200577,"endHours":24.122927297528047,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:25","end":"07:45","startHours":6.415789910908296,"endHours":7.7534002358973,"quality":"neutral"},{"name":"Labha","start":"07:45","end":"09:05","startHours":7.7534002358973,"endHours":9.091010560886303,"quality":"auspicious"},{"name":"Amṛta","start":"09:05","end":"10:26","startHours":9.091010560886303,"endHours":10.428620885875308,"quality":"auspicious"},{"name":"Kāla","start":"10:26","end":"11:46","startHours":10.428620885875308,"endHours":11.766231210864312,"quality":"inauspicious"},{"name":"Śubha","start":"11:46","end":"13:06","startHours":11.766231210864312,"endHours":13.103841535853316,"quality":"auspicious"},{"name":"Roga","start":"13:06","end":"14:26","startHours":13.103841535853316,"endHours":14.44145186084232,"quality":"inauspicious"},{"name":"Udveg","start":"14:26","end":"15:47","startHours":14.44145186084232,"endHours":15.779062185831325,"quality":"inauspicious"},{"name":"Chala","start":"15:47","end":"17:07","startHours":15.779062185831325,"endHours":17.11667251082033,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:07","end":"18:47","startHours":17.11667251082033,"endHours":18.779062185831325,"quality":"inauspicious"},{"name":"Udveg","start":"18:47","end":"20:26","startHours":18.779062185831325,"endHours":20.44145186084232,"quality":"inauspicious"},{"name":"Chala","start":"20:26","end":"22:06","startHours":20.44145186084232,"endHours":22.103841535853316,"quality":"neutral"},{"name":"Labha","start":"22:06","end":"23:46","startHours":22.103841535853316,"endHours":23.766231210864312,"quality":"auspicious"},{"name":"Amṛta","start":"23:46","end":"01:26","startHours":23.766231210864312,"endHours":25.428620885875308,"quality":"auspicious"},{"name":"Kāla","start":"01:26","end":"03:05","startHours":25.428620885875308,"endHours":27.091010560886303,"quality":"inauspicious"},{"name":"Śubha","start":"03:05","end":"04:45","startHours":27.091010560886303,"endHours":28.7534002358973,"quality":"auspicious"},{"name":"Roga","start":"04:45","end":"06:25","startHours":28.7534002358973,"endHours":30.415789910908295,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:25","end":"07:25","startHours":6.415789910908296,"endHours":7.415789910908296,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:25","end":"08:25","startHours":7.415789910908296,"endHours":8.415789910908295,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:25","end":"09:25","startHours":8.415789910908295,"endHours":9.415789910908295,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:25","end":"10:25","startHours":9.415789910908295,"endHours":10.415789910908295,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:25","end":"11:25","startHours":10.415789910908295,"endHours":11.415789910908295,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:25","end":"12:25","startHours":11.415789910908295,"endHours":12.415789910908295,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:25","end":"13:25","startHours":12.415789910908295,"endHours":13.415789910908295,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:25","end":"14:25","startHours":13.415789910908295,"endHours":14.415789910908295,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:25","end":"15:25","startHours":14.415789910908295,"endHours":15.415789910908295,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:25","end":"16:25","startHours":15.415789910908295,"endHours":16.415789910908295,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:25","end":"17:25","startHours":16.415789910908295,"endHours":17.415789910908295,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:25","end":"18:25","startHours":17.415789910908295,"endHours":18.415789910908295,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:25","end":"19:25","startHours":18.415789910908295,"endHours":19.415789910908295,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:25","end":"20:25","startHours":19.415789910908295,"endHours":20.415789910908295,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:25","end":"21:25","startHours":20.415789910908295,"endHours":21.415789910908295,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:25","end":"22:25","startHours":21.415789910908295,"endHours":22.415789910908295,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:25","end":"23:25","startHours":22.415789910908295,"endHours":23.415789910908295,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:25","end":"00:25","startHours":23.415789910908295,"endHours":24.415789910908295,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:25","end":"01:25","startHours":24.415789910908295,"endHours":25.415789910908295,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:25","end":"02:25","startHours":25.415789910908295,"endHours":26.415789910908295,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:25","end":"03:25","startHours":26.415789910908295,"endHours":27.415789910908295,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:25","end":"04:25","startHours":27.415789910908295,"endHours":28.415789910908295,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:25","end":"05:25","startHours":28.415789910908295,"endHours":29.415789910908295,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:25","end":"06:25","startHours":29.415789910908295,"endHours":30.415789910908295,"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","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"West (Paścim)","chandraVasa":"South","rahuVasa":"South-East","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"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":-23.369037812063986,"eotMinutes":2.787727348141232,"ayanamsa":24.076}},"calendars":{"vikram_samvat":2072,"vikram_samvatsara":"Kīlaka","saka_samvat":1937,"saka_samvatsara":"Manmatha","bengali_samvat":1422,"malayalam_era":1191,"nanakshahi_year":546,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Saptamī · Vikram 2072 Kīlaka · Śaka 1937 Manmatha"},"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}],"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":[]},"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, 2015 CE · Ranchi, Jharkhand · Vidhyamitra","description":"December 18, 2015 CE for Ranchi, Jharkhand: Śukla Saptamī, sūryodaya 06:25, sūryāsta 17:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ranchi/2015-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ranchi/2015-12-18","sa":"https://sa.vidhyamitra.com/city/ranchi/2015-12-18","hi":"https://hi.vidhyamitra.com/city/ranchi/2015-12-18","x-default":"https://vidhyamitra.com/city/ranchi/2015-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T17:01:47.658Z","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":"2026-05-15T17:01:47.658Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T17:01:47.658Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}