{"id":"vidhyamitra:city-day:ayodhya:1998-12-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1998-12-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-12-18","date_display":"December 18, 1998 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":1998,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451165.770833,"kali_year":5100,"ahargana":1862700.2708,"sun":{"sidereal_longitude":241.7065,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":231.0012,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":349.2947,"elapsed_within_tithi_degrees":1.2947},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":231.0012,"elapsed_within_degrees":4.3345},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.7077},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":1998,"month":12,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451165.770833,"ahargana":1862700.2708,"kali_year":5100,"ayanamsa_lahiri":23.8385,"grahas":{"sun":{"sidereal_longitude":242.06500000000005,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false},"moon":{"sidereal_longitude":232.00199999999995,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":4.3291},"mars":{"sidereal_longitude":167.40329999999994,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":220.586,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":326.28819999999996,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":254.0711,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":2.988999999999976,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":125.1757,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":305.1757,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","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":1998,"month":12,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451165.770833,"kali_year":5100,"ahargana":1862700.2708,"sun":{"sidereal_longitude":241.7065,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":231.0012,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":349.2947,"elapsed_within_tithi_degrees":1.2947},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":231.0012,"elapsed_within_degrees":4.3345},"yoga":{"number":9,"name":"Śūla","sum_longitude":112.7077},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.329,"elongation":10.705},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.329,"opposition_distance":169.295}},"eclipse_window_40days":[]},"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"tier2":{"city":{"slug":"ayodhya","name":"Ayodhyā","lat":26.799,"lon":82.204,"tz_offset_hours":5.5,"state":"Uttar Pradesh","country":"IN","tier":"tirtha"},"sunriseLocal":"06:45","sunsetLocal":"17:12","solarNoonLocal":"11:58","dayLengthHours":10.457394469276277,"dayLengthDisplay":"10 Hours 27 Mins 27 Secs","nightLengthDisplay":"13 Hours 32 Mins 33 Secs","moonriseLocal":"06:04","moonsetLocal":"16:32","rahuKala":{"name":"Rāhu Kāla","start":"10:40","end":"11:58","startHours":10.66609690220478,"endHours":11.973271210864315,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"14:35","end":"15:54","startHours":14.587619828183383,"endHours":15.894794136842918,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:03","end":"09:22","startHours":8.05174828488571,"endHours":9.358922593545245,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:11","end":"09:32","startHours":9.184632685723972,"endHours":9.533212501366517,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:11","end":"07:28","startHours":7.1802987457793535,"endHours":7.459162598293387,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:19","startHours":11.62469139522177,"endHours":12.321851026506856,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:21","end":"06:03","startHours":5.350254713656005,"endHours":6.047414344941091,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:52","end":"06:45","startHours":5.873124437119819,"endHours":6.744573976226175,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:43","end":"14:25","startHours":13.716170289077027,"endHours":14.413329920362113,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:00","end":"17:24","startHours":17.001968445502452,"endHours":17.40196844550245,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:12","end":"17:38","startHours":17.20196844550245,"endHours":17.63769321505563,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"16:57","end":"18:42","startHours":16.95196844550245,"endHours":18.70196844550245,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:19","startHours":23.62469139522177,"endHours":24.321851026506852,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:45","end":"08:03","startHours":6.744573976226175,"endHours":8.05174828488571,"quality":"neutral"},{"name":"Labha","start":"08:03","end":"09:22","startHours":8.05174828488571,"endHours":9.358922593545245,"quality":"auspicious"},{"name":"Amṛta","start":"09:22","end":"10:40","startHours":9.358922593545245,"endHours":10.66609690220478,"quality":"auspicious"},{"name":"Kāla","start":"10:40","end":"11:58","startHours":10.66609690220478,"endHours":11.973271210864315,"quality":"inauspicious"},{"name":"Śubha","start":"11:58","end":"13:17","startHours":11.973271210864315,"endHours":13.280445519523848,"quality":"auspicious"},{"name":"Roga","start":"13:17","end":"14:35","startHours":13.280445519523848,"endHours":14.587619828183383,"quality":"inauspicious"},{"name":"Udveg","start":"14:35","end":"15:54","startHours":14.587619828183383,"endHours":15.894794136842918,"quality":"inauspicious"},{"name":"Chala","start":"15:54","end":"17:12","startHours":15.894794136842918,"endHours":17.20196844550245,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"17:12","end":"18:54","startHours":17.20196844550245,"endHours":18.89479413684292,"quality":"inauspicious"},{"name":"Udveg","start":"18:54","end":"20:35","startHours":18.89479413684292,"endHours":20.58761982818338,"quality":"inauspicious"},{"name":"Chala","start":"20:35","end":"22:17","startHours":20.58761982818338,"endHours":22.280445519523848,"quality":"neutral"},{"name":"Labha","start":"22:17","end":"23:58","startHours":22.280445519523848,"endHours":23.97327121086431,"quality":"auspicious"},{"name":"Amṛta","start":"23:58","end":"01:40","startHours":23.97327121086431,"endHours":25.666096902204778,"quality":"auspicious"},{"name":"Kāla","start":"01:40","end":"03:22","startHours":25.666096902204778,"endHours":27.358922593545245,"quality":"inauspicious"},{"name":"Śubha","start":"03:22","end":"05:03","startHours":27.358922593545245,"endHours":29.05174828488571,"quality":"auspicious"},{"name":"Roga","start":"05:03","end":"06:45","startHours":29.05174828488571,"endHours":30.744573976226174,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:45","end":"07:45","startHours":6.744573976226175,"endHours":7.744573976226175,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:45","end":"08:45","startHours":7.744573976226175,"endHours":8.744573976226174,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:45","end":"09:45","startHours":8.744573976226174,"endHours":9.744573976226174,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:45","end":"10:45","startHours":9.744573976226174,"endHours":10.744573976226174,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:45","end":"11:45","startHours":10.744573976226174,"endHours":11.744573976226174,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:45","end":"12:45","startHours":11.744573976226174,"endHours":12.744573976226174,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:45","end":"13:45","startHours":12.744573976226174,"endHours":13.744573976226174,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:45","end":"14:45","startHours":13.744573976226174,"endHours":14.744573976226174,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:45","end":"15:45","startHours":14.744573976226174,"endHours":15.744573976226174,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:45","end":"16:45","startHours":15.744573976226174,"endHours":16.744573976226174,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:45","end":"17:45","startHours":16.744573976226174,"endHours":17.744573976226174,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:45","end":"18:45","startHours":17.744573976226174,"endHours":18.744573976226174,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:45","end":"19:45","startHours":18.744573976226174,"endHours":19.744573976226174,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:45","end":"20:45","startHours":19.744573976226174,"endHours":20.744573976226174,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:45","end":"21:45","startHours":20.744573976226174,"endHours":21.744573976226174,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:45","end":"22:45","startHours":21.744573976226174,"endHours":22.744573976226174,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:45","end":"23:45","startHours":22.744573976226174,"endHours":23.744573976226174,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:45","end":"00:45","startHours":23.744573976226174,"endHours":24.744573976226174,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:45","end":"01:45","startHours":24.744573976226174,"endHours":25.744573976226174,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:45","end":"02:45","startHours":25.744573976226174,"endHours":26.744573976226174,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:45","end":"03:45","startHours":26.744573976226174,"endHours":27.744573976226174,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:45","end":"04:45","startHours":27.744573976226174,"endHours":28.744573976226174,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:45","end":"05:45","startHours":28.744573976226174,"endHours":29.744573976226174,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:45","end":"06:45","startHours":29.744573976226174,"endHours":30.744573976226174,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"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":"West (Paścim)","chandraVasa":"North-East","rahuVasa":"South-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-23.3730592316159,"eotMinutes":2.787727348141232,"ayanamsa":23.8385}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Kṛṣṇa Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Kṛṣṇa Amāvasyā · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":5}],"todays_walk":{"walk":{"id":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā + Jyeṣṭhā","url":"/day/-3137-10-20","relevance":1}]},"validity":{"eternal":false,"location_specific":"ayodhya"},"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, 1998 CE · Ayodhyā · Vidhyamitra","description":"December 18, 1998 CE for Ayodhyā: Kṛṣṇa Amāvasyā, sūryodaya 06:45, sūryāsta 17:12.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1998-12-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1998-12-18","sa":"https://sa.vidhyamitra.com/city/ayodhya/1998-12-18","hi":"https://hi.vidhyamitra.com/city/ayodhya/1998-12-18","x-default":"https://vidhyamitra.com/city/ayodhya/1998-12-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T19:38:24.643Z","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":"2026-05-16T19:38:24.643Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T19:38:24.643Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}