{"id":"vidhyamitra:city-day:ayodhya:1809-05-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1809-05-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1809-05-18","date_display":"May 18, 1809 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":1809,"month":5,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2381920.770833,"kali_year":4911,"ahargana":1793455.2708,"sun":{"sidereal_longitude":35.8358,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":77.8198,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.984,"elapsed_within_tithi_degrees":5.984},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":77.8198,"elapsed_within_degrees":11.1532},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.6556},"karana":{"half_tithi_index":6,"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":1809,"month":5,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2381920.770833,"ahargana":1793455.2708,"kali_year":4911,"ayanamsa_lahiri":21.1901,"grahas":{"sun":{"sidereal_longitude":35.43926799999997,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":73.90386799999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false,"latitude":-4.0337},"mars":{"sidereal_longitude":170.28896800000007,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":44.97756800000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":355.761568,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"venus":{"sidereal_longitude":47.997468000000026,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":true},"saturn":{"sidereal_longitude":221.589468,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":194.109,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":14.109,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"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":1809,"month":5,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2381920.770833,"kali_year":4911,"ahargana":1793455.2708,"sun":{"sidereal_longitude":35.8358,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":77.8198,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":41.984,"elapsed_within_tithi_degrees":5.984},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":77.8198,"elapsed_within_degrees":11.1532},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.6556},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.034,"elongation":41.984},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.034,"opposition_distance":138.016}},"eclipse_window_40days":[{"offset_days":-18,"type":"lunar","occurs":true,"moon_latitude":0.225,"opposition_distance":0.622}]},"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":13.500426027491745,"dayLengthDisplay":"13 Hours 30 Mins 02 Secs","nightLengthDisplay":"10 Hours 29 Mins 58 Secs","moonriseLocal":"07:38","moonsetLocal":"21:25","rahuKala":{"name":"Rāhu Kāla","start":"13:39","end":"15:20","startHours":13.645800216928642,"endHours":15.333353470365111,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:12","end":"06:54","startHours":5.208033949746301,"endHours":6.895587203182769,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:35","end":"10:16","startHours":8.583140456619237,"endHours":10.270693710055706,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:21","end":"08:48","startHours":8.35813335616104,"endHours":8.808147557077433,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:46","end":"06:08","startHours":5.77055170089179,"endHours":6.130563061624903,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:30","end":"12:24","startHours":11.508232762575782,"endHours":12.408261164408566,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:24","end":"04:18","startHours":3.407977146080735,"endHours":4.308005547913518,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:05","end":"05:12","startHours":4.082998447455322,"endHours":5.208033949746301,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"15:07","startHours":14.20831796807413,"endHours":15.108346369906913,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:31","end":"18:55","startHours":18.508459977238047,"endHours":18.908459977238046,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:43","end":"19:16","startHours":18.708459977238046,"endHours":19.270977728383535,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:28","end":"20:13","startHours":18.458459977238046,"endHours":20.208459977238046,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:30","end":"00:24","startHours":23.50823276257578,"endHours":24.408261164408565,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:12","end":"06:54","startHours":5.208033949746301,"endHours":6.895587203182769,"quality":"auspicious"},{"name":"Roga","start":"06:54","end":"08:35","startHours":6.895587203182769,"endHours":8.583140456619237,"quality":"inauspicious"},{"name":"Udveg","start":"08:35","end":"10:16","startHours":8.583140456619237,"endHours":10.270693710055706,"quality":"inauspicious"},{"name":"Chala","start":"10:16","end":"11:57","startHours":10.270693710055706,"endHours":11.958246963492172,"quality":"neutral"},{"name":"Labha","start":"11:57","end":"13:39","startHours":11.958246963492172,"endHours":13.645800216928642,"quality":"auspicious"},{"name":"Amṛta","start":"13:39","end":"15:20","startHours":13.645800216928642,"endHours":15.333353470365111,"quality":"auspicious"},{"name":"Kāla","start":"15:20","end":"17:01","startHours":15.333353470365111,"endHours":17.020906723801577,"quality":"inauspicious"},{"name":"Śubha","start":"17:01","end":"18:43","startHours":17.020906723801577,"endHours":18.708459977238046,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:43","end":"20:01","startHours":18.708459977238046,"endHours":20.020906723801577,"quality":"auspicious"},{"name":"Kāla","start":"20:01","end":"21:20","startHours":20.020906723801577,"endHours":21.33335347036511,"quality":"inauspicious"},{"name":"Śubha","start":"21:20","end":"22:39","startHours":21.33335347036511,"endHours":22.64580021692864,"quality":"auspicious"},{"name":"Roga","start":"22:39","end":"23:57","startHours":22.64580021692864,"endHours":23.958246963492172,"quality":"inauspicious"},{"name":"Udveg","start":"23:57","end":"01:16","startHours":23.958246963492172,"endHours":25.270693710055706,"quality":"inauspicious"},{"name":"Chala","start":"01:16","end":"02:35","startHours":25.270693710055706,"endHours":26.583140456619237,"quality":"neutral"},{"name":"Labha","start":"02:35","end":"03:54","startHours":26.583140456619237,"endHours":27.89558720318277,"quality":"auspicious"},{"name":"Amṛta","start":"03:54","end":"05:12","startHours":27.89558720318277,"endHours":29.2080339497463,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:12","end":"06:12","startHours":5.208033949746301,"endHours":6.208033949746301,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:12","end":"07:12","startHours":6.208033949746301,"endHours":7.208033949746301,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:12","end":"08:12","startHours":7.208033949746301,"endHours":8.208033949746302,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:12","end":"09:12","startHours":8.208033949746302,"endHours":9.208033949746302,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:12","end":"10:12","startHours":9.208033949746302,"endHours":10.208033949746302,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:12","end":"11:12","startHours":10.208033949746302,"endHours":11.208033949746302,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:12","end":"12:12","startHours":11.208033949746302,"endHours":12.208033949746302,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:12","end":"13:12","startHours":12.208033949746302,"endHours":13.208033949746302,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:12","end":"14:12","startHours":13.208033949746302,"endHours":14.208033949746302,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:12","end":"15:12","startHours":14.208033949746302,"endHours":15.208033949746302,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:12","end":"16:12","startHours":15.208033949746302,"endHours":16.2080339497463,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:12","end":"17:12","startHours":16.2080339497463,"endHours":17.2080339497463,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:12","end":"18:12","startHours":17.2080339497463,"endHours":18.2080339497463,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:12","end":"19:12","startHours":18.2080339497463,"endHours":19.2080339497463,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:12","end":"20:12","startHours":19.2080339497463,"endHours":20.2080339497463,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:12","end":"21:12","startHours":20.2080339497463,"endHours":21.2080339497463,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:12","end":"22:12","startHours":21.2080339497463,"endHours":22.2080339497463,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:12","end":"23:12","startHours":22.2080339497463,"endHours":23.2080339497463,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:12","end":"00:12","startHours":23.2080339497463,"endHours":24.2080339497463,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:12","end":"01:12","startHours":24.2080339497463,"endHours":25.2080339497463,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:12","end":"02:12","startHours":25.2080339497463,"endHours":26.2080339497463,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:12","end":"03:12","startHours":26.2080339497463,"endHours":27.2080339497463,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:12","end":"04:12","startHours":27.2080339497463,"endHours":28.2080339497463,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:12","end":"05:12","startHours":28.2080339497463,"endHours":29.2080339497463,"planetary_lord":"Moon"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":19.39982649083601,"eotMinutes":3.6891821904695723,"ayanamsa":21.1901}},"calendars":{"vikram_samvat":1866,"vikram_samvatsara":"Citrabhānu","saka_samvat":1731,"saka_samvatsara":"Śukla","bengali_samvat":1216,"malayalam_era":985,"nanakshahi_year":340,"lunar_month":"Jyeṣṭha","lunar_month_paksha_full":"Jyeṣṭha Śukla Pakṣa","solar_month":"Vṛṣabha (Vaikāsi)","ritu":"Grīṣma (Summer)","display_summary":"Jyeṣṭha Śukla Caturthī · Vikram 1866 Citrabhānu · Śaka 1731 Śukla"},"festivals":[{"id":"vrishabha-sankranti","name":"Vṛṣabha Saṅkrānti","name_sanskrit":"वृषभ सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Taurus.","vrata":false,"detection":{"sun_rashi":"Vṛṣabha"},"precedence":5},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"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":"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, 1809 CE · Ayodhyā · Vidhyamitra","description":"May 18, 1809 CE for Ayodhyā: Śukla Caturthī, sūryodaya 05:12, sūryāsta 18:43.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1809-05-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1809-05-18","sa":"https://sa.vidhyamitra.com/city/ayodhya/1809-05-18","hi":"https://hi.vidhyamitra.com/city/ayodhya/1809-05-18","x-default":"https://vidhyamitra.com/city/ayodhya/1809-05-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T17:36:09.774Z","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":"2026-05-22T17:36:09.774Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T17:36:09.774Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}