{"id":"vidhyamitra:city-day:mathura:2008-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/2008-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2008-12-18","date_display":"December 18, 2008 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":2008,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2454818.770833,"kali_year":5110,"ahargana":1866353.2708,"sun":{"sidereal_longitude":242.1299,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":131.8347,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.7047,"elapsed_within_tithi_degrees":9.7047},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":131.8347,"elapsed_within_degrees":11.8347},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.9646},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"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":2008,"month":12,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2454818.770833,"ahargana":1866353.2708,"kali_year":5110,"ayanamsa_lahiri":23.9782,"grahas":{"sun":{"sidereal_longitude":242.508328,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":135.43062799999996,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false,"latitude":-1.5534},"mars":{"sidereal_longitude":238.98712799999998,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":254.74912799999993,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":272.295128,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":287.49542799999995,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":147.405128,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":291.6222,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":111.6222,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","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":"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":2008,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2454818.770833,"kali_year":5110,"ahargana":1866353.2708,"sun":{"sidereal_longitude":242.1299,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":131.8347,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":21,"name":"Ṣaṣṭhī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Ṣaṣṭhī","elongation_degrees":249.7047,"elapsed_within_tithi_degrees":9.7047},"nakshatra":{"number":10,"name":"Maghā","pada":4,"moon_longitude":131.8347,"elapsed_within_degrees":11.8347},"yoga":{"number":2,"name":"Prīti","sum_longitude":13.9646},"karana":{"half_tithi_index":41,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.553,"elongation":110.295},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.553,"opposition_distance":69.705}},"eclipse_window_40days":[]},"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"mathura","name":"Mathurā","lat":27.4924,"lon":77.6737,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"07:04","sunsetLocal":"17:29","solarNoonLocal":"12:17","dayLengthHours":10.405318689331203,"dayLengthDisplay":"10 Hours 24 Mins 19 Secs","nightLengthDisplay":"13 Hours 35 Mins 41 Secs","moonriseLocal":"22:49","moonsetLocal":"11:28","rahuKala":{"name":"Rāhu Kāla","start":"13:35","end":"14:53","startHours":13.575956047030713,"endHours":14.876620883197113,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:04","end":"08:22","startHours":7.072631866198711,"endHours":8.373296702365112,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:40","end":"10:58","startHours":9.673961538531511,"endHours":10.974626374697912,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:30","end":"09:51","startHours":9.500539560375993,"endHours":9.847383516687032,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:30","end":"07:47","startHours":7.506186811587511,"endHours":7.783661976636344,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:56","end":"12:37","startHours":11.928447254553273,"endHours":12.622135167175355,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:41","end":"06:23","startHours":5.685256040954551,"endHours":6.3789439535766315,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"06:12","end":"07:04","startHours":6.205521975421111,"endHours":7.072631866198711,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:01","end":"14:42","startHours":14.009510992419514,"endHours":14.703198905041594,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:17","end":"17:41","startHours":17.277950555529916,"endHours":17.677950555529915,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:29","end":"17:55","startHours":17.477950555529915,"endHours":17.911505500918715,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:14","end":"18:59","startHours":17.227950555529915,"endHours":18.977950555529915,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:56","end":"00:37","startHours":23.928447254553273,"endHours":24.622135167175355,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"07:04","end":"08:22","startHours":7.072631866198711,"endHours":8.373296702365112,"quality":"auspicious"},{"name":"Roga","start":"08:22","end":"09:40","startHours":8.373296702365112,"endHours":9.673961538531511,"quality":"inauspicious"},{"name":"Udveg","start":"09:40","end":"10:58","startHours":9.673961538531511,"endHours":10.974626374697912,"quality":"inauspicious"},{"name":"Chala","start":"10:58","end":"12:17","startHours":10.974626374697912,"endHours":12.275291210864314,"quality":"neutral"},{"name":"Labha","start":"12:17","end":"13:35","startHours":12.275291210864314,"endHours":13.575956047030713,"quality":"auspicious"},{"name":"Amṛta","start":"13:35","end":"14:53","startHours":13.575956047030713,"endHours":14.876620883197113,"quality":"auspicious"},{"name":"Kāla","start":"14:53","end":"16:11","startHours":14.876620883197113,"endHours":16.177285719363514,"quality":"inauspicious"},{"name":"Śubha","start":"16:11","end":"17:29","startHours":16.177285719363514,"endHours":17.477950555529915,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:29","end":"19:11","startHours":17.477950555529915,"endHours":19.177285719363514,"quality":"auspicious"},{"name":"Kāla","start":"19:11","end":"20:53","startHours":19.177285719363514,"endHours":20.876620883197113,"quality":"inauspicious"},{"name":"Śubha","start":"20:53","end":"22:35","startHours":20.876620883197113,"endHours":22.575956047030715,"quality":"auspicious"},{"name":"Roga","start":"22:35","end":"00:17","startHours":22.575956047030715,"endHours":24.275291210864314,"quality":"inauspicious"},{"name":"Udveg","start":"00:17","end":"01:58","startHours":24.275291210864314,"endHours":25.974626374697912,"quality":"inauspicious"},{"name":"Chala","start":"01:58","end":"03:40","startHours":25.974626374697912,"endHours":27.673961538531515,"quality":"neutral"},{"name":"Labha","start":"03:40","end":"05:22","startHours":27.673961538531515,"endHours":29.373296702365113,"quality":"auspicious"},{"name":"Amṛta","start":"05:22","end":"07:04","startHours":29.373296702365113,"endHours":31.072631866198712,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"07:04","end":"08:04","startHours":7.072631866198711,"endHours":8.072631866198712,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"08:04","end":"09:04","startHours":8.072631866198712,"endHours":9.072631866198712,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"09:04","end":"10:04","startHours":9.072631866198712,"endHours":10.072631866198712,"planetary_lord":"Moon"},{"name":"Hora 4","start":"10:04","end":"11:04","startHours":10.072631866198712,"endHours":11.072631866198712,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"11:04","end":"12:04","startHours":11.072631866198712,"endHours":12.072631866198712,"planetary_lord":"Venus"},{"name":"Hora 6","start":"12:04","end":"13:04","startHours":12.072631866198712,"endHours":13.072631866198712,"planetary_lord":"Sun"},{"name":"Hora 7","start":"13:04","end":"14:04","startHours":13.072631866198712,"endHours":14.072631866198712,"planetary_lord":"Mars"},{"name":"Hora 8","start":"14:04","end":"15:04","startHours":14.072631866198712,"endHours":15.072631866198712,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"15:04","end":"16:04","startHours":15.072631866198712,"endHours":16.072631866198712,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"16:04","end":"17:04","startHours":16.072631866198712,"endHours":17.072631866198712,"planetary_lord":"Moon"},{"name":"Hora 11","start":"17:04","end":"18:04","startHours":17.072631866198712,"endHours":18.072631866198712,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"18:04","end":"19:04","startHours":18.072631866198712,"endHours":19.072631866198712,"planetary_lord":"Venus"},{"name":"Hora 13","start":"19:04","end":"20:04","startHours":19.072631866198712,"endHours":20.072631866198712,"planetary_lord":"Sun"},{"name":"Hora 14","start":"20:04","end":"21:04","startHours":20.072631866198712,"endHours":21.072631866198712,"planetary_lord":"Mars"},{"name":"Hora 15","start":"21:04","end":"22:04","startHours":21.072631866198712,"endHours":22.072631866198712,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"22:04","end":"23:04","startHours":22.072631866198712,"endHours":23.072631866198712,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"23:04","end":"00:04","startHours":23.072631866198712,"endHours":24.072631866198712,"planetary_lord":"Moon"},{"name":"Hora 18","start":"00:04","end":"01:04","startHours":24.072631866198712,"endHours":25.072631866198712,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"01:04","end":"02:04","startHours":25.072631866198712,"endHours":26.072631866198712,"planetary_lord":"Venus"},{"name":"Hora 20","start":"02:04","end":"03:04","startHours":26.072631866198712,"endHours":27.072631866198712,"planetary_lord":"Sun"},{"name":"Hora 21","start":"03:04","end":"04:04","startHours":27.072631866198712,"endHours":28.072631866198712,"planetary_lord":"Mars"},{"name":"Hora 22","start":"04:04","end":"05:04","startHours":28.072631866198712,"endHours":29.072631866198712,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"05:04","end":"06:04","startHours":29.072631866198712,"endHours":30.072631866198712,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"06:04","end":"07:04","startHours":30.072631866198712,"endHours":31.072631866198712,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"West","rahuVasa":"North-West","anandadiYoga":{"name":"Cara","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":-23.38982418347192,"eotMinutes":2.787727348141232,"ayanamsa":23.9782}},"calendars":{"vikram_samvat":2065,"vikram_samvatsara":"Plava","saka_samvat":1930,"saka_samvatsara":"Sarvadhāri","bengali_samvat":1415,"malayalam_era":1184,"nanakshahi_year":539,"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 Ṣaṣṭhī · Vikram 2065 Plava · Śaka 1930 Sarvadhāri"},"festivals":[],"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":"mathura"},"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, 2008 CE · Mathurā · Vidhyamitra","description":"December 18, 2008 CE for Mathurā: Kṛṣṇa Ṣaṣṭhī, sūryodaya 07:04, sūryāsta 17:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/2008-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/2008-12-18","sa":"https://sa.vidhyamitra.com/city/mathura/2008-12-18","hi":"https://hi.vidhyamitra.com/city/mathura/2008-12-18","x-default":"https://vidhyamitra.com/city/mathura/2008-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-12T12:57:23.967Z","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":"2026-09-12T12:57:23.967Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-12T12:57:23.967Z","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"}}}