{"id":"vidhyamitra:city-day:vrindavan:2025-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/vrindavan/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":"Not independently benchmarked across the declared range","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":"Not independently benchmarked across the declared range","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":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"vrindavan","name":"Vṛndāvana","lat":27.565,"lon":77.6593,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:05","sunsetLocal":"17:29","solarNoonLocal":"12:17","dayLengthHours":10.400257009207516,"dayLengthDisplay":"10 Hours 24 Mins 01 Secs","nightLengthDisplay":"13 Hours 35 Mins 59 Secs","moonriseLocal":"05:31","moonsetLocal":"16:05","rahuKala":{"name":"Rāhu Kāla","start":"13:35","end":"14:53","startHours":13.576283337015251,"endHours":14.876315463166192,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:05","end":"08:23","startHours":7.076122706260554,"endHours":8.376154832411494,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:41","end":"10:59","startHours":9.676186958562432,"endHours":10.976219084713373,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:30","end":"09:51","startHours":9.502849341742309,"endHours":9.849524575382558,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:31","end":"07:47","startHours":7.509466748310867,"endHours":7.786806935223067,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:37","startHours":11.929575977224061,"endHours":12.622926444504564,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:41","end":"06:23","startHours":5.689421771699552,"endHours":6.382772238980053,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:13","end":"07:05","startHours":6.209434622159927,"endHours":7.076122706260554,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:42","startHours":14.009627379065565,"endHours":14.702977846346066,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:17","end":"17:41","startHours":17.27637971546807,"endHours":17.67637971546807,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:29","end":"17:55","startHours":17.47637971546807,"endHours":17.909723757518382,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:14","end":"18:59","startHours":17.22637971546807,"endHours":18.97637971546807,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:37","startHours":23.92957597722406,"endHours":24.622926444504564,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:05","end":"08:23","startHours":7.076122706260554,"endHours":8.376154832411494,"quality":"auspicious"},{"name":"Roga","start":"08:23","end":"09:41","startHours":8.376154832411494,"endHours":9.676186958562432,"quality":"inauspicious"},{"name":"Udveg","start":"09:41","end":"10:59","startHours":9.676186958562432,"endHours":10.976219084713373,"quality":"inauspicious"},{"name":"Chala","start":"10:59","end":"12:17","startHours":10.976219084713373,"endHours":12.276251210864313,"quality":"neutral"},{"name":"Labha","start":"12:17","end":"13:35","startHours":12.276251210864313,"endHours":13.576283337015251,"quality":"auspicious"},{"name":"Amṛta","start":"13:35","end":"14:53","startHours":13.576283337015251,"endHours":14.876315463166192,"quality":"auspicious"},{"name":"Kāla","start":"14:53","end":"16:11","startHours":14.876315463166192,"endHours":16.176347589317132,"quality":"inauspicious"},{"name":"Śubha","start":"16:11","end":"17:29","startHours":16.176347589317132,"endHours":17.47637971546807,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:29","end":"19:11","startHours":17.47637971546807,"endHours":19.176347589317132,"quality":"auspicious"},{"name":"Kāla","start":"19:11","end":"20:53","startHours":19.176347589317132,"endHours":20.87631546316619,"quality":"inauspicious"},{"name":"Śubha","start":"20:53","end":"22:35","startHours":20.87631546316619,"endHours":22.57628333701525,"quality":"auspicious"},{"name":"Roga","start":"22:35","end":"00:17","startHours":22.57628333701525,"endHours":24.276251210864313,"quality":"inauspicious"},{"name":"Udveg","start":"00:17","end":"01:59","startHours":24.276251210864313,"endHours":25.97621908471337,"quality":"inauspicious"},{"name":"Chala","start":"01:59","end":"03:41","startHours":25.97621908471337,"endHours":27.676186958562432,"quality":"neutral"},{"name":"Labha","start":"03:41","end":"05:23","startHours":27.676186958562432,"endHours":29.376154832411494,"quality":"auspicious"},{"name":"Amṛta","start":"05:23","end":"07:05","startHours":29.376154832411494,"endHours":31.076122706260556,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:05","end":"08:05","startHours":7.076122706260554,"endHours":8.076122706260554,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:05","end":"09:05","startHours":8.076122706260554,"endHours":9.076122706260554,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:05","end":"10:05","startHours":9.076122706260554,"endHours":10.076122706260554,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:05","end":"11:05","startHours":10.076122706260554,"endHours":11.076122706260554,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:05","end":"12:05","startHours":11.076122706260554,"endHours":12.076122706260554,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:05","end":"13:05","startHours":12.076122706260554,"endHours":13.076122706260554,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:05","end":"14:05","startHours":13.076122706260554,"endHours":14.076122706260554,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:05","end":"15:05","startHours":14.076122706260554,"endHours":15.076122706260554,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:05","end":"16:05","startHours":15.076122706260554,"endHours":16.076122706260556,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:05","end":"17:05","startHours":16.076122706260556,"endHours":17.076122706260556,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:05","end":"18:05","startHours":17.076122706260556,"endHours":18.076122706260556,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:05","end":"19:05","startHours":18.076122706260556,"endHours":19.076122706260556,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:05","end":"20:05","startHours":19.076122706260556,"endHours":20.076122706260556,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:05","end":"21:05","startHours":20.076122706260556,"endHours":21.076122706260556,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:05","end":"22:05","startHours":21.076122706260556,"endHours":22.076122706260556,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:05","end":"23:05","startHours":22.076122706260556,"endHours":23.076122706260556,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:05","end":"00:05","startHours":23.076122706260556,"endHours":24.076122706260556,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:05","end":"01:05","startHours":24.076122706260556,"endHours":25.076122706260556,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:05","end":"02:05","startHours":25.076122706260556,"endHours":26.076122706260556,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:05","end":"03:05","startHours":26.076122706260556,"endHours":27.076122706260556,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:05","end":"04:05","startHours":27.076122706260556,"endHours":28.076122706260556,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:05","end":"05:05","startHours":28.076122706260556,"endHours":29.076122706260556,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:05","end":"06:05","startHours":29.076122706260556,"endHours":30.076122706260556,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:05","end":"07:05","startHours":30.076122706260556,"endHours":31.076122706260556,"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":"vrindavan"},"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 · Vṛndāvana · Vidhyamitra","description":"December 18, 2025 CE for Vṛndāvana: Kṛṣṇa Caturdaśī, sūryodaya 07:05, sūryāsta 17:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/vrindavan/2025-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/vrindavan/2025-12-18","sa":"https://sa.vidhyamitra.com/city/vrindavan/2025-12-18","hi":"https://hi.vidhyamitra.com/city/vrindavan/2025-12-18","x-default":"https://vidhyamitra.com/city/vrindavan/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":"2026-09-22T15:47:54.183Z","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":"2026-09-22T15:47:54.183Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-22T15:47:54.183Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","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"}}}