{"id":"vidhyamitra:city-day:ayodhya:2171-05-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2171-05-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2171-05-18","date_display":"May 18, 2171 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":2171,"month":5,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514138.770833,"kali_year":5273,"ahargana":1925673.2708,"sun":{"sidereal_longitude":30.4093,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":188.7192,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":158.3099,"elapsed_within_tithi_degrees":2.3099},"nakshatra":{"number":15,"name":"Svātī","pada":1,"moon_longitude":188.7192,"elapsed_within_degrees":2.0525},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":219.1285},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2171,"month":5,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514138.770833,"ahargana":1925673.2708,"kali_year":5273,"ayanamsa_lahiri":26.247,"grahas":{"sun":{"sidereal_longitude":30.83176800000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":187.86326800000006,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":1.5262},"mars":{"sidereal_longitude":23.45016800000002,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":36.53846800000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":161.18346799999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"venus":{"sidereal_longitude":15.844468000000006,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":319.210968,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":28.5631,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":208.5631,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","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":"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":2171,"month":5,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514138.770833,"kali_year":5273,"ahargana":1925673.2708,"sun":{"sidereal_longitude":30.4093,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":188.7192,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":14,"name":"Caturdaśī","paksha":"Śukla","full_name":"Śukla Caturdaśī","elongation_degrees":158.3099,"elapsed_within_tithi_degrees":2.3099},"nakshatra":{"number":15,"name":"Svātī","pada":1,"moon_longitude":188.7192,"elapsed_within_degrees":2.0525},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":219.1285},"karana":{"half_tithi_index":26,"name":"Gara"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.526,"elongation":158.31},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.526,"opposition_distance":21.69}},"eclipse_window_40days":[{"offset_days":-13,"type":"solar","occurs":true,"moon_latitude":-0.884,"elongation":0.003}]},"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":"05:12","sunsetLocal":"18:43","solarNoonLocal":"11:57","dayLengthHours":13.508517841958426,"dayLengthDisplay":"13 Hours 30 Mins 31 Secs","nightLengthDisplay":"10 Hours 29 Mins 29 Secs","moonriseLocal":"16:49","moonsetLocal":"04:02","rahuKala":{"name":"Rāhu Kāla","start":"08:35","end":"10:16","startHours":8.581117503002567,"endHours":10.269682233247371,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:39","end":"15:20","startHours":13.646811693736977,"endHours":15.335376423981781,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:12","end":"06:54","startHours":5.203988042512961,"endHours":6.892552772757764,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:21","end":"08:48","startHours":8.355975538969927,"endHours":8.806259467035208,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:46","end":"06:08","startHours":5.766842952594562,"endHours":6.127070095046786,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:30","end":"12:25","startHours":11.507963035426894,"endHours":12.408530891557454,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:24","end":"04:18","startHours":3.4028523302518376,"endHours":4.303420186382399,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:05","end":"05:12","startHours":4.078278222349759,"endHours":5.203988042512961,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:07","startHours":14.20966660381858,"endHours":15.110234459949142,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:31","end":"18:55","startHours":18.512505884471388,"endHours":18.912505884471386,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:43","end":"19:17","startHours":18.712505884471387,"endHours":19.275360794552988,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:28","end":"20:13","startHours":18.462505884471387,"endHours":20.212505884471387,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:30","end":"00:25","startHours":23.50796303542689,"endHours":24.408530891557454,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:12","end":"06:54","startHours":5.203988042512961,"endHours":6.892552772757764,"quality":"inauspicious"},{"name":"Śubha","start":"06:54","end":"08:35","startHours":6.892552772757764,"endHours":8.581117503002567,"quality":"auspicious"},{"name":"Roga","start":"08:35","end":"10:16","startHours":8.581117503002567,"endHours":10.269682233247371,"quality":"inauspicious"},{"name":"Udveg","start":"10:16","end":"11:57","startHours":10.269682233247371,"endHours":11.958246963492174,"quality":"inauspicious"},{"name":"Chala","start":"11:57","end":"13:39","startHours":11.958246963492174,"endHours":13.646811693736977,"quality":"neutral"},{"name":"Labha","start":"13:39","end":"15:20","startHours":13.646811693736977,"endHours":15.335376423981781,"quality":"auspicious"},{"name":"Amṛta","start":"15:20","end":"17:01","startHours":15.335376423981781,"endHours":17.023941154226584,"quality":"auspicious"},{"name":"Kāla","start":"17:01","end":"18:43","startHours":17.023941154226584,"endHours":18.712505884471387,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:43","end":"20:01","startHours":18.712505884471387,"endHours":20.023941154226584,"quality":"auspicious"},{"name":"Amṛta","start":"20:01","end":"21:20","startHours":20.023941154226584,"endHours":21.33537642398178,"quality":"auspicious"},{"name":"Kāla","start":"21:20","end":"22:39","startHours":21.33537642398178,"endHours":22.64681169373698,"quality":"inauspicious"},{"name":"Śubha","start":"22:39","end":"23:57","startHours":22.64681169373698,"endHours":23.958246963492172,"quality":"auspicious"},{"name":"Roga","start":"23:57","end":"01:16","startHours":23.958246963492172,"endHours":25.269682233247373,"quality":"inauspicious"},{"name":"Udveg","start":"01:16","end":"02:35","startHours":25.269682233247373,"endHours":26.581117503002567,"quality":"inauspicious"},{"name":"Chala","start":"02:35","end":"03:54","startHours":26.581117503002567,"endHours":27.892552772757764,"quality":"neutral"},{"name":"Labha","start":"03:54","end":"05:12","startHours":27.892552772757764,"endHours":29.20398804251296,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:12","end":"06:12","startHours":5.203988042512961,"endHours":6.203988042512961,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:12","end":"07:12","startHours":6.203988042512961,"endHours":7.203988042512961,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:12","end":"08:12","startHours":7.203988042512961,"endHours":8.203988042512961,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:12","end":"09:12","startHours":8.203988042512961,"endHours":9.203988042512961,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:12","end":"10:12","startHours":9.203988042512961,"endHours":10.203988042512961,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:12","end":"11:12","startHours":10.203988042512961,"endHours":11.203988042512961,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:12","end":"12:12","startHours":11.203988042512961,"endHours":12.203988042512961,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:12","end":"13:12","startHours":12.203988042512961,"endHours":13.203988042512961,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:12","end":"14:12","startHours":13.203988042512961,"endHours":14.203988042512961,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:12","end":"15:12","startHours":14.203988042512961,"endHours":15.203988042512961,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:12","end":"16:12","startHours":15.203988042512961,"endHours":16.20398804251296,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:12","end":"17:12","startHours":16.20398804251296,"endHours":17.20398804251296,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:12","end":"18:12","startHours":17.20398804251296,"endHours":18.20398804251296,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:12","end":"19:12","startHours":18.20398804251296,"endHours":19.20398804251296,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:12","end":"20:12","startHours":19.20398804251296,"endHours":20.20398804251296,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:12","end":"21:12","startHours":20.20398804251296,"endHours":21.20398804251296,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:12","end":"22:12","startHours":21.20398804251296,"endHours":22.20398804251296,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:12","end":"23:12","startHours":22.20398804251296,"endHours":23.20398804251296,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:12","end":"00:12","startHours":23.20398804251296,"endHours":24.20398804251296,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:12","end":"01:12","startHours":24.20398804251296,"endHours":25.20398804251296,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:12","end":"02:12","startHours":25.20398804251296,"endHours":26.20398804251296,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:12","end":"03:12","startHours":26.20398804251296,"endHours":27.20398804251296,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:12","end":"04:12","startHours":27.20398804251296,"endHours":28.20398804251296,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:12","end":"05:12","startHours":28.20398804251296,"endHours":29.20398804251296,"planetary_lord":"Mercury"}],"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"North","rahuVasa":"East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":19.503472894160147,"eotMinutes":3.6891821904695723,"ayanamsa":26.247}},"calendars":{"vikram_samvat":2228,"vikram_samvatsara":"Tāraṇa","saka_samvat":2093,"saka_samvatsara":"Prajāpati","bengali_samvat":1578,"malayalam_era":1347,"nanakshahi_year":702,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","lunar_month_amanta":"Vaiśākha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Caturdaśī · Vikram 2228 Tāraṇa · Śaka 2093 Prajāpati"},"festivals":[{"id":"narasimha-jayanti","name":"Narasiṁha Jayantī","name_sanskrit":"नरसिंह जयन्ती","tradition":"Vaishnava","associated_deity":"Narasiṁha (avatar of Krishna)","deity_avatara_index":14,"significance":"Bhagavān Narasiṁha manifested to protect the bhakta Prahlāda. Krishna's fierce protective form.","vrata":true,"primary_observance":"Sandhyā (twilight) abhiṣekam; recitation of Narasiṁha-Stotra","detection":{"tithi_number":14,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":1,"related_chart":"narasimha","sources":["Bhāgavata Purāṇa 7.8"]},{"id":"chhinnamasta-jayanti","name":"Chhinnamastā Jayantī","name_sanskrit":"छिन्नमस्ता जयन्ती","tradition":"Shakta","associated_deity":"Devī Chhinnamastā (6th of 10 Mahāvidyās)","significance":"The 6th of the Daśa Mahāvidyās. Devī's self-decapitation form representing transcendence of ego.","vrata":false,"detection":{"tithi_number":14,"tithi_paksha":"Śukla","lunar_month":"Vaiśākha"},"precedence":5}],"todays_walk":{"walk":{"id":"narasimha-jayanti-walk","name":"Narasiṁha Jayantī Walk","name_sanskrit":"नरसिंह जयन्ती यात्रा","type":"festival","description":"Bhāgavata 7.8 (Prahlāda-Narasiṁha) + protective verses.","step_count":9,"url":"/walk/narasimha-jayanti-walk"},"reason":"Today is Narasiṁha Jayantī — its dedicated walk."},"cosmic_resonances":[]},"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 May 18, 2171 CE · Ayodhyā · Vidhyamitra","description":"May 18, 2171 CE for Ayodhyā: Śukla Caturdaśī, sūryodaya 05:12, sūryāsta 18:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2171-05-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2171-05-18","sa":"https://sa.vidhyamitra.com/city/ayodhya/2171-05-18","hi":"https://hi.vidhyamitra.com/city/ayodhya/2171-05-18","x-default":"https://vidhyamitra.com/city/ayodhya/2171-05-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:34:21.584Z","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":"2026-05-31T06:34:21.584Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:34:21.584Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}