{"id":"vidhyamitra:city-day:ayodhya:1821-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1821-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1821-10-18","date_display":"October 18, 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":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2386456.770833,"kali_year":4923,"ahargana":1797991.2708,"sun":{"sidereal_longitude":182.6877,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":89.9781,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":267.2903,"elapsed_within_tithi_degrees":3.2903},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.9781,"elapsed_within_degrees":9.9781},"yoga":{"number":21,"name":"Siddha","sum_longitude":272.6658},"karana":{"half_tithi_index":44,"name":"Bālava"},"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":1821,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2386456.770833,"ahargana":1797991.2708,"kali_year":4923,"ayanamsa_lahiri":21.3636,"grahas":{"sun":{"sidereal_longitude":182.980859,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":93.50545899999997,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":1},"retrograde":false,"latitude":3.1125},"mars":{"sidereal_longitude":112.03945900000002,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":206.20855899999992,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":5.935359000000005,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":223.35265900000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":3.4505589999999984,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":313.7699,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":133.7699,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","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":1821,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2386456.770833,"kali_year":4923,"ahargana":1797991.2708,"sun":{"sidereal_longitude":182.6877,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":89.9781,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":23,"name":"Aṣṭamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Aṣṭamī","elongation_degrees":267.2903,"elapsed_within_tithi_degrees":3.2903},"nakshatra":{"number":7,"name":"Punarvasu","pada":3,"moon_longitude":89.9781,"elapsed_within_degrees":9.9781},"yoga":{"number":21,"name":"Siddha","sum_longitude":272.6658},"karana":{"half_tithi_index":44,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.113,"elongation":92.71},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.113,"opposition_distance":87.29}},"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":"06:01","sunsetLocal":"17:30","solarNoonLocal":"11:46","dayLengthHours":11.484400367753103,"dayLengthDisplay":"11 Hours 29 Mins 04 Secs","nightLengthDisplay":"12 Hours 30 Mins 56 Secs","moonriseLocal":"23:00","moonsetLocal":"12:36","rahuKala":{"name":"Rāhu Kāla","start":"13:12","end":"14:38","startHours":13.198689075915498,"endHours":14.634239121884637,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:01","end":"07:27","startHours":6.020938846069808,"endHours":7.456488892038946,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:54","end":"10:20","startHours":8.892038938008085,"endHours":10.327588983977222,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:42","end":"09:05","startHours":8.7006322652122,"endHours":9.083445610803969,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:30","end":"06:48","startHours":6.499455528059521,"endHours":6.805706204532937,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:23","end":"12:09","startHours":11.380325684354588,"endHours":12.14595237553813,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:29","end":"05:15","startHours":4.4896854637027275,"endHours":5.255312154886268,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:04","end":"06:01","startHours":5.063905482090383,"endHours":6.020938846069808,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:41","end":"14:27","startHours":13.67720575790521,"endHours":14.44283244908875,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:18","end":"17:42","startHours":17.30533921382291,"endHours":17.70533921382291,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:30","end":"17:59","startHours":17.50533921382291,"endHours":17.983855895812624,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:15","end":"19:00","startHours":17.25533921382291,"endHours":19.00533921382291,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:23","end":"00:09","startHours":23.380325684354588,"endHours":24.14595237553813,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:01","end":"07:27","startHours":6.020938846069808,"endHours":7.456488892038946,"quality":"auspicious"},{"name":"Roga","start":"07:27","end":"08:54","startHours":7.456488892038946,"endHours":8.892038938008085,"quality":"inauspicious"},{"name":"Udveg","start":"08:54","end":"10:20","startHours":8.892038938008085,"endHours":10.327588983977222,"quality":"inauspicious"},{"name":"Chala","start":"10:20","end":"11:46","startHours":10.327588983977222,"endHours":11.763139029946359,"quality":"neutral"},{"name":"Labha","start":"11:46","end":"13:12","startHours":11.763139029946359,"endHours":13.198689075915498,"quality":"auspicious"},{"name":"Amṛta","start":"13:12","end":"14:38","startHours":13.198689075915498,"endHours":14.634239121884637,"quality":"auspicious"},{"name":"Kāla","start":"14:38","end":"16:04","startHours":14.634239121884637,"endHours":16.069789167853774,"quality":"inauspicious"},{"name":"Śubha","start":"16:04","end":"17:30","startHours":16.069789167853774,"endHours":17.50533921382291,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"17:30","end":"19:04","startHours":17.50533921382291,"endHours":19.069789167853774,"quality":"auspicious"},{"name":"Kāla","start":"19:04","end":"20:38","startHours":19.069789167853774,"endHours":20.634239121884633,"quality":"inauspicious"},{"name":"Śubha","start":"20:38","end":"22:12","startHours":20.634239121884633,"endHours":22.198689075915496,"quality":"auspicious"},{"name":"Roga","start":"22:12","end":"23:46","startHours":22.198689075915496,"endHours":23.76313902994636,"quality":"inauspicious"},{"name":"Udveg","start":"23:46","end":"01:20","startHours":23.76313902994636,"endHours":25.327588983977222,"quality":"inauspicious"},{"name":"Chala","start":"01:20","end":"02:54","startHours":25.327588983977222,"endHours":26.892038938008085,"quality":"neutral"},{"name":"Labha","start":"02:54","end":"04:27","startHours":26.892038938008085,"endHours":28.456488892038944,"quality":"auspicious"},{"name":"Amṛta","start":"04:27","end":"06:01","startHours":28.456488892038944,"endHours":30.020938846069807,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:01","end":"07:01","startHours":6.020938846069808,"endHours":7.020938846069808,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:01","end":"08:01","startHours":7.020938846069808,"endHours":8.020938846069807,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:01","end":"09:01","startHours":8.020938846069807,"endHours":9.020938846069807,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:01","end":"10:01","startHours":9.020938846069807,"endHours":10.020938846069807,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:01","end":"11:01","startHours":10.020938846069807,"endHours":11.020938846069807,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:01","end":"12:01","startHours":11.020938846069807,"endHours":12.020938846069807,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:01","end":"13:01","startHours":12.020938846069807,"endHours":13.020938846069807,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:01","end":"14:01","startHours":13.020938846069807,"endHours":14.020938846069807,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:01","end":"15:01","startHours":14.020938846069807,"endHours":15.020938846069807,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:01","end":"16:01","startHours":15.020938846069807,"endHours":16.020938846069807,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:01","end":"17:01","startHours":16.020938846069807,"endHours":17.020938846069807,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:01","end":"18:01","startHours":17.020938846069807,"endHours":18.020938846069807,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:01","end":"19:01","startHours":18.020938846069807,"endHours":19.020938846069807,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:01","end":"20:01","startHours":19.020938846069807,"endHours":20.020938846069807,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:01","end":"21:01","startHours":20.020938846069807,"endHours":21.020938846069807,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:01","end":"22:01","startHours":21.020938846069807,"endHours":22.020938846069807,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:01","end":"23:01","startHours":22.020938846069807,"endHours":23.020938846069807,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:01","end":"00:01","startHours":23.020938846069807,"endHours":24.020938846069807,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:01","end":"01:01","startHours":24.020938846069807,"endHours":25.020938846069807,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:01","end":"02:01","startHours":25.020938846069807,"endHours":26.020938846069807,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:01","end":"03:01","startHours":26.020938846069807,"endHours":27.020938846069807,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:01","end":"04:01","startHours":27.020938846069807,"endHours":28.020938846069807,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:01","end":"05:01","startHours":28.020938846069807,"endHours":29.020938846069807,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:01","end":"06:01","startHours":29.020938846069807,"endHours":30.020938846069807,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Karka","Kanyā","Dhanu","Makara"],"unfavorable_rashis":["Mithuna","Siṃha","Tulā","Vṛścika","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-West","rahuVasa":"North-West","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.436466843675182,"eotMinutes":15.395658203218455,"ayanamsa":21.3636}},"calendars":{"vikram_samvat":1878,"vikram_samvatsara":"Jaya","saka_samvat":1743,"saka_samvatsara":"Vṛṣa","bengali_samvat":1228,"malayalam_era":997,"nanakshahi_year":352,"lunar_month":"Kārtika","lunar_month_paksha_full":"Kārtika Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Kārtika","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Kārtika Kṛṣṇa Aṣṭamī · Vikram 1878 Jaya · Śaka 1743 Vṛṣa"},"festivals":[],"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":[{"historical_date":"-3226-07-09","event":"Bhagavān Krishna's birth at Mathurā","chart_id":"krishna","shared_marker":"same Kṛṣṇa Aṣṭamī","url":"/day/-3226-07-09","relevance":0.5},{"historical_date":"-1626101-04-03","event":"Bhagavān Rāma's birth at Ayodhyā","chart_id":"rama","shared_marker":"same Punarvasu","url":"/day/-1626101-04-03","relevance":0.5}]},"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 October 18, 1821 CE · Ayodhyā · Vidhyamitra","description":"October 18, 1821 CE for Ayodhyā: Kṛṣṇa Aṣṭamī, sūryodaya 06:01, sūryāsta 17:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1821-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1821-10-18","sa":"https://sa.vidhyamitra.com/city/ayodhya/1821-10-18","hi":"https://hi.vidhyamitra.com/city/ayodhya/1821-10-18","x-default":"https://vidhyamitra.com/city/ayodhya/1821-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T19:00:42.926Z","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":"2026-06-01T19:00:42.926Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T19:00:42.926Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}