{"id":"vidhyamitra:city-day:asansol:2025-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/asansol/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":"asansol","name":"Asansol, West Bengal","lat":23.6739,"lon":86.9524,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"asansol","name":"Asansol, West Bengal","lat":23.6739,"lon":86.9524,"tz_offset_hours":5.5,"state":"West Bengal","country":"IN","tier":"tier-1"},"sunriseLocal":"06:19","sunsetLocal":"17:00","solarNoonLocal":"11:39","dayLengthHours":10.677082570925968,"dayLengthDisplay":"10 Hours 40 Mins 37 Secs","nightLengthDisplay":"13 Hours 19 Mins 23 Secs","moonriseLocal":"04:47","moonsetLocal":"15:35","rahuKala":{"name":"Rāhu Kāla","start":"12:59","end":"14:20","startHours":12.99134653223006,"endHours":14.325981853595806,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:19","end":"07:39","startHours":6.318169925401329,"endHours":7.652805246767075,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:59","end":"10:19","startHours":8.987440568132822,"endHours":10.322075889498567,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:49","end":"09:10","startHours":8.809489191950721,"endHours":9.165391944314921,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:46","end":"07:03","startHours":6.763048365856577,"endHours":7.0477705677479365,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:18","end":"12:01","startHours":11.300808458500113,"endHours":12.012613963228512,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:54","end":"05:36","startHours":4.8945589159445335,"endHours":5.606364420672931,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:26","end":"06:19","startHours":5.428413044490831,"endHours":6.318169925401329,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:26","end":"14:09","startHours":13.436224972685308,"endHours":14.148030477413705,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"16:48","end":"17:12","startHours":16.795252496327297,"endHours":17.195252496327296,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:00","end":"17:26","startHours":16.995252496327296,"endHours":17.440130936782545,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:45","end":"18:30","startHours":16.745252496327296,"endHours":18.495252496327296,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:18","end":"00:01","startHours":23.300808458500114,"endHours":24.01261396322851,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:19","end":"07:39","startHours":6.318169925401329,"endHours":7.652805246767075,"quality":"auspicious"},{"name":"Roga","start":"07:39","end":"08:59","startHours":7.652805246767075,"endHours":8.987440568132822,"quality":"inauspicious"},{"name":"Udveg","start":"08:59","end":"10:19","startHours":8.987440568132822,"endHours":10.322075889498567,"quality":"inauspicious"},{"name":"Chala","start":"10:19","end":"11:39","startHours":10.322075889498567,"endHours":11.656711210864312,"quality":"neutral"},{"name":"Labha","start":"11:39","end":"12:59","startHours":11.656711210864312,"endHours":12.99134653223006,"quality":"auspicious"},{"name":"Amṛta","start":"12:59","end":"14:20","startHours":12.99134653223006,"endHours":14.325981853595806,"quality":"auspicious"},{"name":"Kāla","start":"14:20","end":"15:40","startHours":14.325981853595806,"endHours":15.660617174961551,"quality":"inauspicious"},{"name":"Śubha","start":"15:40","end":"17:00","startHours":15.660617174961551,"endHours":16.995252496327296,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:00","end":"18:40","startHours":16.995252496327296,"endHours":18.66061717496155,"quality":"auspicious"},{"name":"Kāla","start":"18:40","end":"20:20","startHours":18.66061717496155,"endHours":20.325981853595806,"quality":"inauspicious"},{"name":"Śubha","start":"20:20","end":"21:59","startHours":20.325981853595806,"endHours":21.991346532230057,"quality":"auspicious"},{"name":"Roga","start":"21:59","end":"23:39","startHours":21.991346532230057,"endHours":23.656711210864312,"quality":"inauspicious"},{"name":"Udveg","start":"23:39","end":"01:19","startHours":23.656711210864312,"endHours":25.322075889498567,"quality":"inauspicious"},{"name":"Chala","start":"01:19","end":"02:59","startHours":25.322075889498567,"endHours":26.98744056813282,"quality":"neutral"},{"name":"Labha","start":"02:59","end":"04:39","startHours":26.98744056813282,"endHours":28.652805246767073,"quality":"auspicious"},{"name":"Amṛta","start":"04:39","end":"06:19","startHours":28.652805246767073,"endHours":30.318169925401328,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:19","end":"07:19","startHours":6.318169925401329,"endHours":7.318169925401329,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:19","end":"08:19","startHours":7.318169925401329,"endHours":8.318169925401328,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:19","end":"09:19","startHours":8.318169925401328,"endHours":9.318169925401328,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:19","end":"10:19","startHours":9.318169925401328,"endHours":10.318169925401328,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:19","end":"11:19","startHours":10.318169925401328,"endHours":11.318169925401328,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:19","end":"12:19","startHours":11.318169925401328,"endHours":12.318169925401328,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:19","end":"13:19","startHours":12.318169925401328,"endHours":13.318169925401328,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:19","end":"14:19","startHours":13.318169925401328,"endHours":14.318169925401328,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:19","end":"15:19","startHours":14.318169925401328,"endHours":15.318169925401328,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:19","end":"16:19","startHours":15.318169925401328,"endHours":16.318169925401328,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:19","end":"17:19","startHours":16.318169925401328,"endHours":17.318169925401328,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:19","end":"18:19","startHours":17.318169925401328,"endHours":18.318169925401328,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:19","end":"19:19","startHours":18.318169925401328,"endHours":19.318169925401328,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:19","end":"20:19","startHours":19.318169925401328,"endHours":20.318169925401328,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:19","end":"21:19","startHours":20.318169925401328,"endHours":21.318169925401328,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:19","end":"22:19","startHours":21.318169925401328,"endHours":22.318169925401328,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:19","end":"23:19","startHours":22.318169925401328,"endHours":23.318169925401328,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:19","end":"00:19","startHours":23.318169925401328,"endHours":24.318169925401328,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:19","end":"01:19","startHours":24.318169925401328,"endHours":25.318169925401328,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:19","end":"02:19","startHours":25.318169925401328,"endHours":26.318169925401328,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:19","end":"03:19","startHours":26.318169925401328,"endHours":27.318169925401328,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:19","end":"04:19","startHours":27.318169925401328,"endHours":28.318169925401328,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:19","end":"05:19","startHours":28.318169925401328,"endHours":29.318169925401328,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:19","end":"06:19","startHours":29.318169925401328,"endHours":30.318169925401328,"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"},"tropicalRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","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","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Mārgaśīrṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Caturdaśī · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"festivals":[{"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":"Dedicated festival walk for Māsika Śivarātri is not live yet; Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"asansol"},"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 · Asansol, West Bengal · Vidhyamitra","description":"December 18, 2025 CE for Asansol, West Bengal: Kṛṣṇa Caturdaśī, sūryodaya 06:19, sūryāsta 17:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/asansol/2025-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/asansol/2025-12-18","sa":"https://sa.vidhyamitra.com/city/asansol/2025-12-18","hi":"https://hi.vidhyamitra.com/city/asansol/2025-12-18","x-default":"https://vidhyamitra.com/city/asansol/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":"2026-07-27T17:19:38.910Z","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":"2026-07-27T17:19:38.910Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-07-27T17:19:38.910Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no founder-city is the universal center.","purna_chain":["Goloka/Vraja Rādhā-Krishna","Vaikuṇṭha Lakṣmī-Nārāyaṇa","Mahāviṣṇu/Kāraṇodakaśāyī Viṣṇu","Garbhodakaśāyī Viṣṇu","Brahmā","Kṣīrodaka Paramātmā/Antaryāmī (Kṣīrodakaśāyī Viṣṇu)","Bhūmi","reader's own kṣetra anywhere on Bhūmi","exact reading kṣetra","Divyāṁśa-bhakta","chitta/vāṇī/aṅgulī","keyboard-silicon-pathways","Vidhyāmitra substrate","reader/seer","Krishna"],"antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}