{"id":"vidhyamitra:city-day:mathura:1966-08-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1966-08-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1966-08-18","date_display":"August 18, 1966 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":1966,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439355.770833,"kali_year":5068,"ahargana":1850890.2708,"sun":{"sidereal_longitude":120.7261,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":140.8204,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":20.0942,"elapsed_within_tithi_degrees":8.0942},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.8204,"elapsed_within_degrees":7.487},"yoga":{"number":20,"name":"Śiva","sum_longitude":261.5465},"karana":{"half_tithi_index":3,"name":"Kaulava"},"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":1966,"month":8,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2439355.770833,"ahargana":1850890.2708,"kali_year":5068,"ayanamsa_lahiri":23.3868,"grahas":{"sun":{"sidereal_longitude":121.27342900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":143.33772900000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":4.231},"mars":{"sidereal_longitude":92.202429,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":103.19702899999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":89.81172900000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"venus":{"sidereal_longitude":100.174329,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":335.848929,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":30.9263,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":210.9263,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"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":1966,"month":8,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2439355.770833,"kali_year":5068,"ahargana":1850890.2708,"sun":{"sidereal_longitude":120.7261,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":140.8204,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":2,"name":"Dvitīyā","paksha":"Śukla","full_name":"Śukla Dvitīyā","elongation_degrees":20.0942,"elapsed_within_tithi_degrees":8.0942},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.8204,"elapsed_within_degrees":7.487},"yoga":{"number":20,"name":"Śiva","sum_longitude":261.5465},"karana":{"half_tithi_index":3,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.231,"elongation":20.094},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.231,"opposition_distance":159.906}},"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":"05:51","sunsetLocal":"18:55","solarNoonLocal":"12:23","dayLengthHours":13.071983023945265,"dayLengthDisplay":"13 Hours 04 Mins 19 Secs","nightLengthDisplay":"10 Hours 55 Mins 41 Secs","moonriseLocal":"07:38","moonsetLocal":"20:05","rahuKala":{"name":"Rāhu Kāla","start":"14:01","end":"15:39","startHours":14.014552173341666,"endHours":15.648550051334823,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:51","end":"07:29","startHours":5.844562783375875,"endHours":7.478560661369033,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:07","end":"10:45","startHours":9.11255853936219,"endHours":10.74655641735535,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:20","startHours":8.89469215562977,"endHours":9.330424923094613,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:23","end":"06:44","startHours":6.389228742706928,"endHours":6.737814956678802,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:57","end":"12:49","startHours":11.944821527883665,"endHours":12.816287062813348,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:06","end":"04:58","startHours":4.101631713516507,"endHours":4.973097248446191,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:45","end":"05:51","startHours":4.75523086471377,"endHours":5.844562783375875,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:34","end":"15:26","startHours":14.559218132672719,"endHours":15.430683667602404,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:43","end":"19:07","startHours":18.71654580732114,"endHours":19.11654580732114,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:55","end":"19:28","startHours":18.91654580732114,"endHours":19.46121176665219,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:40","end":"20:25","startHours":18.66654580732114,"endHours":20.41654580732114,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:57","end":"00:49","startHours":23.944821527883665,"endHours":24.81628706281335,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:51","end":"07:29","startHours":5.844562783375875,"endHours":7.478560661369033,"quality":"auspicious"},{"name":"Roga","start":"07:29","end":"09:07","startHours":7.478560661369033,"endHours":9.11255853936219,"quality":"inauspicious"},{"name":"Udveg","start":"09:07","end":"10:45","startHours":9.11255853936219,"endHours":10.74655641735535,"quality":"inauspicious"},{"name":"Chala","start":"10:45","end":"12:23","startHours":10.74655641735535,"endHours":12.380554295348507,"quality":"neutral"},{"name":"Labha","start":"12:23","end":"14:01","startHours":12.380554295348507,"endHours":14.014552173341666,"quality":"auspicious"},{"name":"Amṛta","start":"14:01","end":"15:39","startHours":14.014552173341666,"endHours":15.648550051334823,"quality":"auspicious"},{"name":"Kāla","start":"15:39","end":"17:17","startHours":15.648550051334823,"endHours":17.282547929327983,"quality":"inauspicious"},{"name":"Śubha","start":"17:17","end":"18:55","startHours":17.282547929327983,"endHours":18.91654580732114,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:55","end":"20:17","startHours":18.91654580732114,"endHours":20.282547929327983,"quality":"auspicious"},{"name":"Kāla","start":"20:17","end":"21:39","startHours":20.282547929327983,"endHours":21.648550051334823,"quality":"inauspicious"},{"name":"Śubha","start":"21:39","end":"23:01","startHours":21.648550051334823,"endHours":23.014552173341663,"quality":"auspicious"},{"name":"Roga","start":"23:01","end":"00:23","startHours":23.014552173341663,"endHours":24.380554295348507,"quality":"inauspicious"},{"name":"Udveg","start":"00:23","end":"01:45","startHours":24.380554295348507,"endHours":25.74655641735535,"quality":"inauspicious"},{"name":"Chala","start":"01:45","end":"03:07","startHours":25.74655641735535,"endHours":27.11255853936219,"quality":"neutral"},{"name":"Labha","start":"03:07","end":"04:29","startHours":27.11255853936219,"endHours":28.47856066136903,"quality":"auspicious"},{"name":"Amṛta","start":"04:29","end":"05:51","startHours":28.47856066136903,"endHours":29.844562783375874,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:51","end":"06:51","startHours":5.844562783375875,"endHours":6.844562783375875,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:51","end":"07:51","startHours":6.844562783375875,"endHours":7.844562783375875,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:51","end":"08:51","startHours":7.844562783375875,"endHours":8.844562783375874,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:51","end":"09:51","startHours":8.844562783375874,"endHours":9.844562783375874,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:51","end":"10:51","startHours":9.844562783375874,"endHours":10.844562783375874,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:51","end":"11:51","startHours":10.844562783375874,"endHours":11.844562783375874,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:51","end":"12:51","startHours":11.844562783375874,"endHours":12.844562783375874,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:51","end":"13:51","startHours":12.844562783375874,"endHours":13.844562783375874,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:51","end":"14:51","startHours":13.844562783375874,"endHours":14.844562783375874,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:51","end":"15:51","startHours":14.844562783375874,"endHours":15.844562783375874,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:51","end":"16:51","startHours":15.844562783375874,"endHours":16.844562783375874,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:51","end":"17:51","startHours":16.844562783375874,"endHours":17.844562783375874,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:51","end":"18:51","startHours":17.844562783375874,"endHours":18.844562783375874,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:51","end":"19:51","startHours":18.844562783375874,"endHours":19.844562783375874,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:51","end":"20:51","startHours":19.844562783375874,"endHours":20.844562783375874,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:51","end":"21:51","startHours":20.844562783375874,"endHours":21.844562783375874,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:51","end":"22:51","startHours":21.844562783375874,"endHours":22.844562783375874,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:51","end":"23:51","startHours":22.844562783375874,"endHours":23.844562783375874,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:51","end":"00:51","startHours":23.844562783375874,"endHours":24.844562783375874,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:51","end":"01:51","startHours":24.844562783375874,"endHours":25.844562783375874,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:51","end":"02:51","startHours":25.844562783375874,"endHours":26.844562783375874,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:51","end":"03:51","startHours":26.844562783375874,"endHours":27.844562783375874,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:51","end":"04:51","startHours":27.844562783375874,"endHours":28.844562783375874,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:51","end":"05:51","startHours":28.844562783375874,"endHours":29.844562783375874,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","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":"Sushira","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":13.300486414338472,"eotMinutes":-3.5280577209103767,"ayanamsa":23.3868}},"calendars":{"vikram_samvat":2023,"vikram_samvatsara":"Siddhārthī","saka_samvat":1888,"saka_samvatsara":"Parābhava","bengali_samvat":1373,"malayalam_era":1142,"nanakshahi_year":497,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Dvitīyā · Vikram 2023 Siddhārthī · Śaka 1888 Parābhava"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"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 August 18, 1966 CE · Mathurā · Vidhyamitra","description":"August 18, 1966 CE for Mathurā: Śukla Dvitīyā, sūryodaya 05:51, sūryāsta 18:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1966-08-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1966-08-18","sa":"https://sa.vidhyamitra.com/city/mathura/1966-08-18","hi":"https://hi.vidhyamitra.com/city/mathura/1966-08-18","x-default":"https://vidhyamitra.com/city/mathura/1966-08-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T14:40:43.031Z","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":"2026-05-14T14:40:43.031Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T14:40:43.031Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}