{"id":"vidhyamitra:city-day:mathura:1983-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/mathura/1983-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1983-10-18","date_display":"October 18, 1983 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":1983,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445625.770833,"kali_year":5085,"ahargana":1857160.2708,"sun":{"sidereal_longitude":179.7817,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":314.6456,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":134.864,"elapsed_within_tithi_degrees":2.864},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.6456,"elapsed_within_degrees":7.9789},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":134.4273},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":1983,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2445625.770833,"ahargana":1857160.2708,"kali_year":5085,"ayanamsa_lahiri":23.6266,"grahas":{"sun":{"sidereal_longitude":180.47156800000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":316.47886800000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false,"latitude":-4.3648},"mars":{"sidereal_longitude":137.74746800000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":171.87196800000004,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":226.91086799999994,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":135.47846800000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":191.661968,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":58.7116,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":238.7116,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","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":1983,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2445625.770833,"kali_year":5085,"ahargana":1857160.2708,"sun":{"sidereal_longitude":179.7817,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":314.6456,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":134.864,"elapsed_within_tithi_degrees":2.864},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3,"moon_longitude":314.6456,"elapsed_within_degrees":7.9789},"yoga":{"number":11,"name":"Vṛddhi","sum_longitude":134.4273},"karana":{"half_tithi_index":22,"name":"Bava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.365,"elongation":134.864},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.365,"opposition_distance":45.136}},"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":"06:20","sunsetLocal":"17:48","solarNoonLocal":"12:04","dayLengthHours":11.472172403024626,"dayLengthDisplay":"11 Hours 28 Mins 20 Secs","nightLengthDisplay":"12 Hours 31 Mins 40 Secs","moonriseLocal":"15:22","moonsetLocal":"02:54","rahuKala":{"name":"Rāhu Kāla","start":"14:56","end":"16:22","startHours":14.933202130702515,"endHours":16.367223681080592,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:12","end":"10:38","startHours":9.197115929190202,"endHours":10.631137479568281,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:04","end":"13:30","startHours":12.065159029946358,"endHours":13.499180580324438,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:00","end":"09:23","startHours":9.00591305580646,"endHours":9.388318802573945,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:48","end":"07:07","startHours":6.807080011893405,"endHours":7.113004609307396,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:41","end":"12:27","startHours":11.682753283178872,"endHours":12.447564776713847,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:48","end":"05:34","startHours":4.799449841364096,"endHours":5.56426133489907,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:22","end":"06:20","startHours":5.373058461515327,"endHours":6.329072828434046,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:59","end":"14:45","startHours":13.977187763783796,"endHours":14.74199925731877,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:36","end":"18:00","startHours":17.601245231458673,"endHours":18.00124523145867,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:48","end":"18:17","startHours":17.801245231458672,"endHours":18.27925241491803,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:33","end":"19:18","startHours":17.551245231458672,"endHours":19.301245231458672,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:41","end":"00:27","startHours":23.68275328317887,"endHours":24.447564776713847,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:20","end":"07:46","startHours":6.329072828434046,"endHours":7.763094378812124,"quality":"inauspicious"},{"name":"Udveg","start":"07:46","end":"09:12","startHours":7.763094378812124,"endHours":9.197115929190202,"quality":"inauspicious"},{"name":"Chala","start":"09:12","end":"10:38","startHours":9.197115929190202,"endHours":10.631137479568281,"quality":"neutral"},{"name":"Labha","start":"10:38","end":"12:04","startHours":10.631137479568281,"endHours":12.065159029946358,"quality":"auspicious"},{"name":"Amṛta","start":"12:04","end":"13:30","startHours":12.065159029946358,"endHours":13.499180580324438,"quality":"auspicious"},{"name":"Kāla","start":"13:30","end":"14:56","startHours":13.499180580324438,"endHours":14.933202130702515,"quality":"inauspicious"},{"name":"Śubha","start":"14:56","end":"16:22","startHours":14.933202130702515,"endHours":16.367223681080592,"quality":"auspicious"},{"name":"Roga","start":"16:22","end":"17:48","startHours":16.367223681080592,"endHours":17.801245231458672,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:48","end":"19:22","startHours":17.801245231458672,"endHours":19.367223681080596,"quality":"inauspicious"},{"name":"Śubha","start":"19:22","end":"20:56","startHours":19.367223681080596,"endHours":20.933202130702515,"quality":"auspicious"},{"name":"Roga","start":"20:56","end":"22:30","startHours":20.933202130702515,"endHours":22.49918058032444,"quality":"inauspicious"},{"name":"Udveg","start":"22:30","end":"00:04","startHours":22.49918058032444,"endHours":24.065159029946358,"quality":"inauspicious"},{"name":"Chala","start":"00:04","end":"01:38","startHours":24.065159029946358,"endHours":25.63113747956828,"quality":"neutral"},{"name":"Labha","start":"01:38","end":"03:12","startHours":25.63113747956828,"endHours":27.197115929190204,"quality":"auspicious"},{"name":"Amṛta","start":"03:12","end":"04:46","startHours":27.197115929190204,"endHours":28.763094378812127,"quality":"auspicious"},{"name":"Kāla","start":"04:46","end":"06:20","startHours":28.763094378812127,"endHours":30.329072828434047,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:20","end":"07:20","startHours":6.329072828434046,"endHours":7.329072828434046,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:20","end":"08:20","startHours":7.329072828434046,"endHours":8.329072828434047,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:20","end":"09:20","startHours":8.329072828434047,"endHours":9.329072828434047,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:20","end":"10:20","startHours":9.329072828434047,"endHours":10.329072828434047,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:20","end":"11:20","startHours":10.329072828434047,"endHours":11.329072828434047,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:20","end":"12:20","startHours":11.329072828434047,"endHours":12.329072828434047,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:20","end":"13:20","startHours":12.329072828434047,"endHours":13.329072828434047,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:20","end":"14:20","startHours":13.329072828434047,"endHours":14.329072828434047,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:20","end":"15:20","startHours":14.329072828434047,"endHours":15.329072828434047,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:20","end":"16:20","startHours":15.329072828434047,"endHours":16.329072828434047,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:20","end":"17:20","startHours":16.329072828434047,"endHours":17.329072828434047,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:20","end":"18:20","startHours":17.329072828434047,"endHours":18.329072828434047,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:20","end":"19:20","startHours":18.329072828434047,"endHours":19.329072828434047,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:20","end":"20:20","startHours":19.329072828434047,"endHours":20.329072828434047,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:20","end":"21:20","startHours":20.329072828434047,"endHours":21.329072828434047,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:20","end":"22:20","startHours":21.329072828434047,"endHours":22.329072828434047,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:20","end":"23:20","startHours":22.329072828434047,"endHours":23.329072828434047,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:20","end":"00:20","startHours":23.329072828434047,"endHours":24.329072828434047,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:20","end":"01:20","startHours":24.329072828434047,"endHours":25.329072828434047,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:20","end":"02:20","startHours":25.329072828434047,"endHours":26.329072828434047,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:20","end":"03:20","startHours":26.329072828434047,"endHours":27.329072828434047,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:20","end":"04:20","startHours":27.329072828434047,"endHours":28.329072828434047,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:20","end":"05:20","startHours":28.329072828434047,"endHours":29.329072828434047,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:20","end":"06:20","startHours":29.329072828434047,"endHours":30.329072828434047,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"drikRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-9.345918860744709,"eotMinutes":15.395658203218455,"ayanamsa":23.6266}},"calendars":{"vikram_samvat":2040,"vikram_samvatsara":"Dhātṛ","saka_samvat":1905,"saka_samvatsara":"Rudhirodgāri","bengali_samvat":1390,"malayalam_era":1159,"nanakshahi_year":514,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Śukla Pakṣa","solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Śukla Dvādaśī · Vikram 2040 Dhātṛ · Śaka 1905 Rudhirodgāri"},"festivals":[{"id":"tulasi-vivaha","name":"Tulasī Vivāha","name_sanskrit":"तुलसी विवाह","tradition":"Vaishnava","associated_deity":"Tulasī Devī + Bhagavān Viṣṇu","significance":"Marriage of Tulasī (Vṛndā) with Śālagrāma. Marks end of Cāturmāsya.","vrata":true,"detection":{"tithi_number":12,"tithi_paksha":"Śukla","lunar_month":"Kārtika"},"precedence":2,"sources":["Padma Purāṇa Uttara-khaṇḍa"]},{"id":"tula-sankranti","name":"Tulā Saṅkrānti","name_sanskrit":"तुला सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Libra.","vrata":false,"detection":{"sun_rashi":"Tulā"},"precedence":5}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 October 18, 1983 CE · Mathurā · Vidhyamitra","description":"October 18, 1983 CE for Mathurā: Śukla Dvādaśī, sūryodaya 06:20, sūryāsta 17:48.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/mathura/1983-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/mathura/1983-10-18","sa":"https://sa.vidhyamitra.com/city/mathura/1983-10-18","hi":"https://hi.vidhyamitra.com/city/mathura/1983-10-18","x-default":"https://vidhyamitra.com/city/mathura/1983-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T17:12:30.553Z","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":"2026-05-14T17:12:30.553Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T17:12:30.553Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}