{"id":"vidhyamitra:city-day:ayodhya:1821-05-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1821-05-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1821-05-15","date_display":"May 15, 1821 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":1821,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2386300.770833,"kali_year":4923,"ahargana":1797835.2708,"sun":{"sidereal_longitude":32.8658,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":188.2604,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.3946,"elapsed_within_tithi_degrees":11.3946},"nakshatra":{"number":15,"name":"Svātī","pada":1,"moon_longitude":188.2604,"elapsed_within_degrees":1.5937},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":221.1262},"karana":{"half_tithi_index":25,"name":"Taitila"},"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":1821,"month":5,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2386300.770833,"ahargana":1797835.2708,"kali_year":4923,"ayanamsa_lahiri":21.3577,"grahas":{"sun":{"sidereal_longitude":32.47842000000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":188.82101999999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":1},"retrograde":false,"latitude":-3.2477},"mars":{"sidereal_longitude":8.461020000000019,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":17.84141999999997,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":358.46802,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":32.804719999999975,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":1.3695200000000227,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":322.0356,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":142.0356,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":1821,"month":5,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2386300.770833,"kali_year":4923,"ahargana":1797835.2708,"sun":{"sidereal_longitude":32.8658,"rashi":2,"rashi_name":"Vṛṣabha"},"moon":{"sidereal_longitude":188.2604,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":155.3946,"elapsed_within_tithi_degrees":11.3946},"nakshatra":{"number":15,"name":"Svātī","pada":1,"moon_longitude":188.2604,"elapsed_within_degrees":1.5937},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":221.1262},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.248,"elongation":155.395},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.248,"opposition_distance":24.605}},"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":"05:14","sunsetLocal":"18:41","solarNoonLocal":"11:57","dayLengthHours":13.448397209159264,"dayLengthDisplay":"13 Hours 26 Mins 54 Secs","nightLengthDisplay":"10 Hours 33 Mins 06 Secs","moonriseLocal":"16:44","moonsetLocal":"04:02","rahuKala":{"name":"Rāhu Kāla","start":"15:19","end":"17:00","startHours":15.319229286691048,"endHours":17.000278937835958,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:36","end":"10:17","startHours":8.595030682111418,"endHours":10.276080333256324,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"11:57","end":"13:38","startHours":11.957129984401234,"endHours":13.638179635546141,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:22","end":"08:49","startHours":8.37089072862543,"endHours":8.819170635597406,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:48","end":"06:09","startHours":5.793281263536571,"endHours":6.151905189114151,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:31","end":"12:24","startHours":11.508850077429257,"endHours":12.405409891373209,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:26","end":"04:20","startHours":3.4398117519337,"endHours":4.33637156587765,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:07","end":"05:14","startHours":4.112231612391663,"endHours":5.2329313798216015,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"15:06","startHours":14.198529519261111,"endHours":15.095089333205062,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:29","end":"18:53","startHours":18.481328588980865,"endHours":18.881328588980864,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:41","end":"19:15","startHours":18.681328588980865,"endHours":19.241678472695835,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:26","end":"20:11","startHours":18.431328588980865,"endHours":20.181328588980865,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:31","end":"00:24","startHours":23.50885007742926,"endHours":24.40540989137321,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"05:14","end":"06:55","startHours":5.2329313798216015,"endHours":6.913981030966509,"quality":"inauspicious"},{"name":"Udveg","start":"06:55","end":"08:36","startHours":6.913981030966509,"endHours":8.595030682111418,"quality":"inauspicious"},{"name":"Chala","start":"08:36","end":"10:17","startHours":8.595030682111418,"endHours":10.276080333256324,"quality":"neutral"},{"name":"Labha","start":"10:17","end":"11:57","startHours":10.276080333256324,"endHours":11.957129984401234,"quality":"auspicious"},{"name":"Amṛta","start":"11:57","end":"13:38","startHours":11.957129984401234,"endHours":13.638179635546141,"quality":"auspicious"},{"name":"Kāla","start":"13:38","end":"15:19","startHours":13.638179635546141,"endHours":15.319229286691048,"quality":"inauspicious"},{"name":"Śubha","start":"15:19","end":"17:00","startHours":15.319229286691048,"endHours":17.000278937835958,"quality":"auspicious"},{"name":"Roga","start":"17:00","end":"18:41","startHours":17.000278937835958,"endHours":18.681328588980865,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:41","end":"20:00","startHours":18.681328588980865,"endHours":20.000278937835958,"quality":"inauspicious"},{"name":"Śubha","start":"20:00","end":"21:19","startHours":20.000278937835958,"endHours":21.319229286691048,"quality":"auspicious"},{"name":"Roga","start":"21:19","end":"22:38","startHours":21.319229286691048,"endHours":22.63817963554614,"quality":"inauspicious"},{"name":"Udveg","start":"22:38","end":"23:57","startHours":22.63817963554614,"endHours":23.957129984401234,"quality":"inauspicious"},{"name":"Chala","start":"23:57","end":"01:17","startHours":23.957129984401234,"endHours":25.276080333256324,"quality":"neutral"},{"name":"Labha","start":"01:17","end":"02:36","startHours":25.276080333256324,"endHours":26.595030682111418,"quality":"auspicious"},{"name":"Amṛta","start":"02:36","end":"03:55","startHours":26.595030682111418,"endHours":27.91398103096651,"quality":"auspicious"},{"name":"Kāla","start":"03:55","end":"05:14","startHours":27.91398103096651,"endHours":29.2329313798216,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:14","end":"06:14","startHours":5.2329313798216015,"endHours":6.2329313798216015,"planetary_lord":"Mars"},{"name":"Hora 2","start":"06:14","end":"07:14","startHours":6.2329313798216015,"endHours":7.2329313798216015,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"07:14","end":"08:14","startHours":7.2329313798216015,"endHours":8.2329313798216,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"08:14","end":"09:14","startHours":8.2329313798216,"endHours":9.2329313798216,"planetary_lord":"Moon"},{"name":"Hora 5","start":"09:14","end":"10:14","startHours":9.2329313798216,"endHours":10.2329313798216,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"10:14","end":"11:14","startHours":10.2329313798216,"endHours":11.2329313798216,"planetary_lord":"Venus"},{"name":"Hora 7","start":"11:14","end":"12:14","startHours":11.2329313798216,"endHours":12.2329313798216,"planetary_lord":"Sun"},{"name":"Hora 8","start":"12:14","end":"13:14","startHours":12.2329313798216,"endHours":13.2329313798216,"planetary_lord":"Mars"},{"name":"Hora 9","start":"13:14","end":"14:14","startHours":13.2329313798216,"endHours":14.2329313798216,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"14:14","end":"15:14","startHours":14.2329313798216,"endHours":15.2329313798216,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"15:14","end":"16:14","startHours":15.2329313798216,"endHours":16.2329313798216,"planetary_lord":"Moon"},{"name":"Hora 12","start":"16:14","end":"17:14","startHours":16.2329313798216,"endHours":17.2329313798216,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"17:14","end":"18:14","startHours":17.2329313798216,"endHours":18.2329313798216,"planetary_lord":"Venus"},{"name":"Hora 14","start":"18:14","end":"19:14","startHours":18.2329313798216,"endHours":19.2329313798216,"planetary_lord":"Sun"},{"name":"Hora 15","start":"19:14","end":"20:14","startHours":19.2329313798216,"endHours":20.2329313798216,"planetary_lord":"Mars"},{"name":"Hora 16","start":"20:14","end":"21:14","startHours":20.2329313798216,"endHours":21.2329313798216,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"21:14","end":"22:14","startHours":21.2329313798216,"endHours":22.2329313798216,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"22:14","end":"23:14","startHours":22.2329313798216,"endHours":23.2329313798216,"planetary_lord":"Moon"},{"name":"Hora 19","start":"23:14","end":"00:14","startHours":23.2329313798216,"endHours":24.2329313798216,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"00:14","end":"01:14","startHours":24.2329313798216,"endHours":25.2329313798216,"planetary_lord":"Venus"},{"name":"Hora 21","start":"01:14","end":"02:14","startHours":25.2329313798216,"endHours":26.2329313798216,"planetary_lord":"Sun"},{"name":"Hora 22","start":"02:14","end":"03:14","startHours":26.2329313798216,"endHours":27.2329313798216,"planetary_lord":"Mars"},{"name":"Hora 23","start":"03:14","end":"04:14","startHours":27.2329313798216,"endHours":28.2329313798216,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"04:14","end":"05:14","startHours":28.2329313798216,"endHours":29.2329313798216,"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"North","rahuVasa":"North","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.72960241978899,"eotMinutes":3.7562009359260493,"ayanamsa":21.3577}},"calendars":{"vikram_samvat":1878,"vikram_samvatsara":"Jaya","saka_samvat":1743,"saka_samvatsara":"Vṛṣa","bengali_samvat":1228,"malayalam_era":997,"nanakshahi_year":352,"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 Trayodaśī · Vikram 1878 Jaya · Śaka 1743 Vṛṣa"},"festivals":[{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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":"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 15, 1821 CE · Ayodhyā · Vidhyamitra","description":"May 15, 1821 CE for Ayodhyā: Śukla Trayodaśī, sūryodaya 05:14, sūryāsta 18:41.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1821-05-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1821-05-15","sa":"https://sa.vidhyamitra.com/city/ayodhya/1821-05-15","hi":"https://hi.vidhyamitra.com/city/ayodhya/1821-05-15","x-default":"https://vidhyamitra.com/city/ayodhya/1821-05-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T11:41:17.360Z","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":"2026-06-02T11:41:17.360Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T11:41:17.360Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}