{"id":"vidhyamitra:city-day:ayodhya:2131-04-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2131-04-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2131-04-21","date_display":"April 21, 2131 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":2131,"month":4,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499501.770833,"kali_year":5233,"ahargana":1911036.2708,"sun":{"sidereal_longitude":4.6796,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":282.7054,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":278.0258,"elapsed_within_tithi_degrees":2.0258},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1,"moon_longitude":282.7054,"elapsed_within_degrees":2.7054},"yoga":{"number":22,"name":"Sādhya","sum_longitude":287.3851},"karana":{"half_tithi_index":46,"name":"Taitila"},"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":2131,"month":4,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2499501.770833,"ahargana":1911036.2708,"kali_year":5233,"ayanamsa_lahiri":25.6872,"grahas":{"sun":{"sidereal_longitude":4.869409000000019,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":279.260409,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false,"latitude":-1.4343},"mars":{"sidereal_longitude":292.696509,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":338.01610900000003,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":31.889809000000014,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":340.554309,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":196.39250900000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":84.1018,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":264.1018,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2131,"month":4,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2499501.770833,"kali_year":5233,"ahargana":1911036.2708,"sun":{"sidereal_longitude":4.6796,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":282.7054,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":278.0258,"elapsed_within_tithi_degrees":2.0258},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1,"moon_longitude":282.7054,"elapsed_within_degrees":2.7054},"yoga":{"number":22,"name":"Sādhya","sum_longitude":287.3851},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.434,"elongation":81.974},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.434,"opposition_distance":98.026}},"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":"05:32","sunsetLocal":"18:28","solarNoonLocal":"12:00","dayLengthHours":12.92603365096356,"dayLengthDisplay":"12 Hours 55 Mins 34 Secs","nightLengthDisplay":"11 Hours 04 Mins 26 Secs","moonriseLocal":"00:55","moonsetLocal":"11:40","rahuKala":{"name":"Rāhu Kāla","start":"08:46","end":"10:23","startHours":8.768436106573073,"endHours":10.38419031294352,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:37","end":"15:14","startHours":13.61569872568441,"endHours":15.231452932054854,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"05:32","end":"07:09","startHours":5.536927693832184,"endHours":7.152681900202629,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:33","end":"08:59","startHours":8.553002212390348,"endHours":8.9838700007558,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:05","end":"06:25","startHours":6.075512429288999,"endHours":6.4202066599813605,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:34","end":"12:26","startHours":11.569076730948511,"endHours":12.430812307679416,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:49","end":"04:41","startHours":3.813456540370376,"endHours":4.67519211710128,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:28","end":"05:32","startHours":4.459758222918554,"endHours":5.536927693832184,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"15:01","startHours":14.154283461141226,"endHours":15.01601903787213,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:16","end":"18:40","startHours":18.262961344795745,"endHours":18.662961344795743,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:28","end":"19:00","startHours":18.462961344795744,"endHours":19.00154608025256,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:13","end":"19:58","startHours":18.212961344795744,"endHours":19.962961344795744,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:34","end":"00:26","startHours":23.569076730948513,"endHours":24.430812307679414,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"05:32","end":"07:09","startHours":5.536927693832184,"endHours":7.152681900202629,"quality":"inauspicious"},{"name":"Śubha","start":"07:09","end":"08:46","startHours":7.152681900202629,"endHours":8.768436106573073,"quality":"auspicious"},{"name":"Roga","start":"08:46","end":"10:23","startHours":8.768436106573073,"endHours":10.38419031294352,"quality":"inauspicious"},{"name":"Udveg","start":"10:23","end":"12:00","startHours":10.38419031294352,"endHours":11.999944519313964,"quality":"inauspicious"},{"name":"Chala","start":"12:00","end":"13:37","startHours":11.999944519313964,"endHours":13.61569872568441,"quality":"neutral"},{"name":"Labha","start":"13:37","end":"15:14","startHours":13.61569872568441,"endHours":15.231452932054854,"quality":"auspicious"},{"name":"Amṛta","start":"15:14","end":"16:51","startHours":15.231452932054854,"endHours":16.8472071384253,"quality":"auspicious"},{"name":"Kāla","start":"16:51","end":"18:28","startHours":16.8472071384253,"endHours":18.462961344795744,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"18:28","end":"19:51","startHours":18.462961344795744,"endHours":19.847207138425297,"quality":"auspicious"},{"name":"Amṛta","start":"19:51","end":"21:14","startHours":19.847207138425297,"endHours":21.231452932054854,"quality":"auspicious"},{"name":"Kāla","start":"21:14","end":"22:37","startHours":21.231452932054854,"endHours":22.61569872568441,"quality":"inauspicious"},{"name":"Śubha","start":"22:37","end":"00:00","startHours":22.61569872568441,"endHours":23.999944519313964,"quality":"auspicious"},{"name":"Roga","start":"00:00","end":"01:23","startHours":23.999944519313964,"endHours":25.384190312943517,"quality":"inauspicious"},{"name":"Udveg","start":"01:23","end":"02:46","startHours":25.384190312943517,"endHours":26.768436106573073,"quality":"inauspicious"},{"name":"Chala","start":"02:46","end":"04:09","startHours":26.768436106573073,"endHours":28.15268190020263,"quality":"neutral"},{"name":"Labha","start":"04:09","end":"05:32","startHours":28.15268190020263,"endHours":29.536927693832183,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:32","end":"06:32","startHours":5.536927693832184,"endHours":6.536927693832184,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"06:32","end":"07:32","startHours":6.536927693832184,"endHours":7.536927693832184,"planetary_lord":"Moon"},{"name":"Hora 3","start":"07:32","end":"08:32","startHours":7.536927693832184,"endHours":8.536927693832183,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"08:32","end":"09:32","startHours":8.536927693832183,"endHours":9.536927693832183,"planetary_lord":"Venus"},{"name":"Hora 5","start":"09:32","end":"10:32","startHours":9.536927693832183,"endHours":10.536927693832183,"planetary_lord":"Sun"},{"name":"Hora 6","start":"10:32","end":"11:32","startHours":10.536927693832183,"endHours":11.536927693832183,"planetary_lord":"Mars"},{"name":"Hora 7","start":"11:32","end":"12:32","startHours":11.536927693832183,"endHours":12.536927693832183,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"12:32","end":"13:32","startHours":12.536927693832183,"endHours":13.536927693832183,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"13:32","end":"14:32","startHours":13.536927693832183,"endHours":14.536927693832183,"planetary_lord":"Moon"},{"name":"Hora 10","start":"14:32","end":"15:32","startHours":14.536927693832183,"endHours":15.536927693832183,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"15:32","end":"16:32","startHours":15.536927693832183,"endHours":16.536927693832183,"planetary_lord":"Venus"},{"name":"Hora 12","start":"16:32","end":"17:32","startHours":16.536927693832183,"endHours":17.536927693832183,"planetary_lord":"Sun"},{"name":"Hora 13","start":"17:32","end":"18:32","startHours":17.536927693832183,"endHours":18.536927693832183,"planetary_lord":"Mars"},{"name":"Hora 14","start":"18:32","end":"19:32","startHours":18.536927693832183,"endHours":19.536927693832183,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"19:32","end":"20:32","startHours":19.536927693832183,"endHours":20.536927693832183,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"20:32","end":"21:32","startHours":20.536927693832183,"endHours":21.536927693832183,"planetary_lord":"Moon"},{"name":"Hora 17","start":"21:32","end":"22:32","startHours":21.536927693832183,"endHours":22.536927693832183,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"22:32","end":"23:32","startHours":22.536927693832183,"endHours":23.536927693832183,"planetary_lord":"Venus"},{"name":"Hora 19","start":"23:32","end":"00:32","startHours":23.536927693832183,"endHours":24.536927693832183,"planetary_lord":"Sun"},{"name":"Hora 20","start":"00:32","end":"01:32","startHours":24.536927693832183,"endHours":25.536927693832183,"planetary_lord":"Mars"},{"name":"Hora 21","start":"01:32","end":"02:32","startHours":25.536927693832183,"endHours":26.536927693832183,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"02:32","end":"03:32","startHours":26.536927693832183,"endHours":27.536927693832183,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"03:32","end":"04:32","startHours":27.536927693832183,"endHours":28.536927693832183,"planetary_lord":"Moon"},{"name":"Hora 24","start":"04:32","end":"05:32","startHours":28.536927693832183,"endHours":29.536927693832183,"planetary_lord":"Mercury"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South-East","rahuVasa":"East","anandadiYoga":{"name":"Kāṇa","quality":"Inauspicious"},"tropicalRitu":"Vasanta (Spring) (tropical)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":11.665812587281977,"eotMinutes":1.1873288411622274,"ayanamsa":25.6872}},"calendars":{"vikram_samvat":2188,"vikram_samvatsara":"Krodhi","saka_samvat":2053,"saka_samvatsara":"Khara","bengali_samvat":1538,"malayalam_era":1307,"nanakshahi_year":662,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Vaiśākha","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":"Vaiśākha Kṛṣṇa Navamī · Vikram 2188 Krodhi · Śaka 2053 Khara"},"festivals":[],"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":[]},"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 21, 2131 CE · Ayodhyā · Vidhyamitra","description":"April 21, 2131 CE for Ayodhyā: Kṛṣṇa Navamī, sūryodaya 05:32, sūryāsta 18:28.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2131-04-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2131-04-21","sa":"https://sa.vidhyamitra.com/city/ayodhya/2131-04-21","hi":"https://hi.vidhyamitra.com/city/ayodhya/2131-04-21","x-default":"https://vidhyamitra.com/city/ayodhya/2131-04-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T23:06:58.219Z","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":"2026-05-31T23:06:58.219Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T23:06:58.219Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}