{"id":"vidhyamitra:city-day:ayodhya:2171-04-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2171-04-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2171-04-20","date_display":"April 20, 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":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514110.770833,"kali_year":5273,"ahargana":1925645.2708,"sun":{"sidereal_longitude":3.3647,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":178.721,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":175.3563,"elapsed_within_tithi_degrees":7.3563},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":178.721,"elapsed_within_degrees":5.3877},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.0858},"karana":{"half_tithi_index":29,"name":"Bava"},"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":4,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2514110.770833,"ahargana":1925645.2708,"kali_year":5273,"ayanamsa_lahiri":26.2459,"grahas":{"sun":{"sidereal_longitude":3.6434380000000033,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":179.505138,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false,"latitude":2.3378},"mars":{"sidereal_longitude":2.7566380000000095,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":340.791838,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":163.70003799999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":true},"venus":{"sidereal_longitude":341.476838,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":316.9087380000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":30.0467,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":210.0467,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","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":2171,"month":4,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2514110.770833,"kali_year":5273,"ahargana":1925645.2708,"sun":{"sidereal_longitude":3.3647,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":178.721,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":175.3563,"elapsed_within_tithi_degrees":7.3563},"nakshatra":{"number":14,"name":"Citrā","pada":2,"moon_longitude":178.721,"elapsed_within_degrees":5.3877},"yoga":{"number":14,"name":"Harṣaṇa","sum_longitude":182.0858},"karana":{"half_tithi_index":29,"name":"Bava"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.338,"elongation":175.356},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.338,"opposition_distance":4.644}},"eclipse_window_40days":[{"offset_days":15,"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":"05:33","sunsetLocal":"18:27","solarNoonLocal":"12:00","dayLengthHours":12.909385933430462,"dayLengthDisplay":"12 Hours 54 Mins 34 Secs","nightLengthDisplay":"11 Hours 05 Mins 26 Secs","moonriseLocal":"18:01","moonsetLocal":"05:26","rahuKala":{"name":"Rāhu Kāla","start":"08:47","end":"10:23","startHours":8.776257458881705,"endHours":10.389930700560512,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:37","end":"15:14","startHours":13.617277183918128,"endHours":15.230950425596935,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:33","end":"07:10","startHours":5.548910975524089,"endHours":7.162584217202897,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:34","end":"08:59","startHours":8.561101026657864,"endHours":8.991413891105546,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:05","end":"06:26","startHours":6.086802056083692,"endHours":6.431052347641837,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:34","end":"12:26","startHours":11.573291077791637,"endHours":12.433916806687002,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:50","end":"04:41","startHours":3.8276595177333608,"endHours":4.688285246628725,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:28","end":"05:33","startHours":4.473128814404884,"endHours":5.548910975524089,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"15:01","startHours":14.15516826447773,"endHours":15.015793993373094,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:15","end":"18:39","startHours":18.258296908954552,"endHours":18.65829690895455,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:27","end":"19:00","startHours":18.45829690895455,"endHours":18.996187989514155,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:12","end":"19:57","startHours":18.20829690895455,"endHours":19.95829690895455,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:34","end":"00:26","startHours":23.573291077791637,"endHours":24.433916806687,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:33","end":"07:10","startHours":5.548910975524089,"endHours":7.162584217202897,"quality":"inauspicious"},{"name":"Śubha","start":"07:10","end":"08:47","startHours":7.162584217202897,"endHours":8.776257458881705,"quality":"auspicious"},{"name":"Roga","start":"08:47","end":"10:23","startHours":8.776257458881705,"endHours":10.389930700560512,"quality":"inauspicious"},{"name":"Udveg","start":"10:23","end":"12:00","startHours":10.389930700560512,"endHours":12.00360394223932,"quality":"inauspicious"},{"name":"Chala","start":"12:00","end":"13:37","startHours":12.00360394223932,"endHours":13.617277183918128,"quality":"neutral"},{"name":"Labha","start":"13:37","end":"15:14","startHours":13.617277183918128,"endHours":15.230950425596935,"quality":"auspicious"},{"name":"Amṛta","start":"15:14","end":"16:51","startHours":15.230950425596935,"endHours":16.844623667275744,"quality":"auspicious"},{"name":"Kāla","start":"16:51","end":"18:27","startHours":16.844623667275744,"endHours":18.45829690895455,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:27","end":"19:51","startHours":18.45829690895455,"endHours":19.844623667275744,"quality":"auspicious"},{"name":"Amṛta","start":"19:51","end":"21:14","startHours":19.844623667275744,"endHours":21.230950425596937,"quality":"auspicious"},{"name":"Kāla","start":"21:14","end":"22:37","startHours":21.230950425596937,"endHours":22.617277183918127,"quality":"inauspicious"},{"name":"Śubha","start":"22:37","end":"00:00","startHours":22.617277183918127,"endHours":24.00360394223932,"quality":"auspicious"},{"name":"Roga","start":"00:00","end":"01:23","startHours":24.00360394223932,"endHours":25.389930700560512,"quality":"inauspicious"},{"name":"Udveg","start":"01:23","end":"02:47","startHours":25.389930700560512,"endHours":26.776257458881705,"quality":"inauspicious"},{"name":"Chala","start":"02:47","end":"04:10","startHours":26.776257458881705,"endHours":28.162584217202898,"quality":"neutral"},{"name":"Labha","start":"04:10","end":"05:33","startHours":28.162584217202898,"endHours":29.548910975524088,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:33","end":"06:33","startHours":5.548910975524089,"endHours":6.548910975524089,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:33","end":"07:33","startHours":6.548910975524089,"endHours":7.548910975524089,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:33","end":"08:33","startHours":7.548910975524089,"endHours":8.54891097552409,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:33","end":"09:33","startHours":8.54891097552409,"endHours":9.54891097552409,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:33","end":"10:33","startHours":9.54891097552409,"endHours":10.54891097552409,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:33","end":"11:33","startHours":10.54891097552409,"endHours":11.54891097552409,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:33","end":"12:33","startHours":11.54891097552409,"endHours":12.54891097552409,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:33","end":"13:33","startHours":12.54891097552409,"endHours":13.54891097552409,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:33","end":"14:33","startHours":13.54891097552409,"endHours":14.54891097552409,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:33","end":"15:33","startHours":14.54891097552409,"endHours":15.54891097552409,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:33","end":"16:33","startHours":15.54891097552409,"endHours":16.548910975524088,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:33","end":"17:33","startHours":16.548910975524088,"endHours":17.548910975524088,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:33","end":"18:33","startHours":17.548910975524088,"endHours":18.548910975524088,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:33","end":"19:33","startHours":18.548910975524088,"endHours":19.548910975524088,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:33","end":"20:33","startHours":19.548910975524088,"endHours":20.548910975524088,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:33","end":"21:33","startHours":20.548910975524088,"endHours":21.548910975524088,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:33","end":"22:33","startHours":21.548910975524088,"endHours":22.548910975524088,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:33","end":"23:33","startHours":22.548910975524088,"endHours":23.548910975524088,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:33","end":"00:33","startHours":23.548910975524088,"endHours":24.548910975524088,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:33","end":"01:33","startHours":24.548910975524088,"endHours":25.548910975524088,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:33","end":"02:33","startHours":25.548910975524088,"endHours":26.548910975524088,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:33","end":"03:33","startHours":26.548910975524088,"endHours":27.548910975524088,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:33","end":"04:33","startHours":27.548910975524088,"endHours":28.548910975524088,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:33","end":"05:33","startHours":28.548910975524088,"endHours":29.548910975524088,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Kanyā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Tulā","Dhanu","Makara"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-West","rahuVasa":"East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":11.43175416197395,"eotMinutes":0.9677634656409275,"ayanamsa":26.2459}},"calendars":{"vikram_samvat":2228,"vikram_samvatsara":"Tāraṇa","saka_samvat":2093,"saka_samvatsara":"Prajāpati","bengali_samvat":1578,"malayalam_era":1347,"nanakshahi_year":702,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Caitra","lunar_month_amanta":"Caitra","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Pūrṇimā · Vikram 2228 Tāraṇa · Śaka 2093 Prajāpati"},"festivals":[{"id":"hanuman-jayanti","name":"Hanumān Jayantī","name_sanskrit":"हनुमान जयन्ती","tradition":"Vaishnava","associated_deity":"Bhagavān Hanumān (Rudra-aṁśa, Rāma-bhakta)","significance":"Birth of Hanumān (Caitra Pūrṇimā tradition; some traditions Mārgaśīrṣa Kṛṣṇa 14).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Caitra"},"precedence":1,"sources":["Vālmīki Rāmāyaṇa, Sundara-Kāṇḍa"]}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","url":"/day/-0562-04-11","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 April 20, 2171 CE · Ayodhyā · Vidhyamitra","description":"April 20, 2171 CE for Ayodhyā: Śukla Pūrṇimā, sūryodaya 05:33, sūryāsta 18:27.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2171-04-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2171-04-20","sa":"https://sa.vidhyamitra.com/city/ayodhya/2171-04-20","hi":"https://hi.vidhyamitra.com/city/ayodhya/2171-04-20","x-default":"https://vidhyamitra.com/city/ayodhya/2171-04-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T06:00:15.206Z","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":"2026-06-01T06:00:15.206Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T06:00:15.206Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}