{"id":"vidhyamitra:city-day:ayodhya:1680-04-11:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1680-04-11","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1680-04-11","date_display":"April 11, 1680 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":1680,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2334768.770833,"kali_year":4782,"ahargana":1746303.2708,"sun":{"sidereal_longitude":3.4129,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":149.9222,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.5094,"elapsed_within_tithi_degrees":2.5094},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":149.9222,"elapsed_within_degrees":3.2556},"yoga":{"number":12,"name":"Dhruva","sum_longitude":153.3351},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":1680,"month":4,"day":11,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2334768.770833,"ahargana":1746303.2708,"kali_year":4782,"ayanamsa_lahiri":19.3867,"grahas":{"sun":{"sidereal_longitude":2.547920999999974,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":150.42312099999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":-1.7225},"mars":{"sidereal_longitude":355.146821,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":19.96942100000001,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":30.205020999999988,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":329.295121,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":77.32412099999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":172.4489,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":352.4489,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"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":1680,"month":4,"day":11,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2334768.770833,"kali_year":4782,"ahargana":1746303.2708,"sun":{"sidereal_longitude":3.4129,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":149.9222,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":146.5094,"elapsed_within_tithi_degrees":2.5094},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1,"moon_longitude":149.9222,"elapsed_within_degrees":3.2556},"yoga":{"number":12,"name":"Dhruva","sum_longitude":153.3351},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.722,"elongation":146.509},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.722,"opposition_distance":33.491}},"eclipse_window_40days":[{"offset_days":3,"type":"lunar","occurs":true,"moon_latitude":1.218,"opposition_distance":1.673}]},"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":"05:41","sunsetLocal":"18:24","solarNoonLocal":"12:03","dayLengthHours":12.706574016327451,"dayLengthDisplay":"12 Hours 42 Mins 24 Secs","nightLengthDisplay":"11 Hours 17 Mins 36 Secs","moonriseLocal":"15:43","moonsetLocal":"04:05","rahuKala":{"name":"Rāhu Kāla","start":"13:38","end":"15:13","startHours":13.630099867715543,"endHours":15.218421619756477,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:41","end":"07:17","startHours":5.688491107510887,"endHours":7.276812859551819,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:52","end":"10:27","startHours":8.865134611592751,"endHours":10.45345636363368,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:05","startHours":8.653358377987292,"endHours":9.076910845198208,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:13","end":"06:33","startHours":6.217931691524531,"endHours":6.556773665293263,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:37","end":"12:28","startHours":11.6182256484637,"endHours":12.465330582885528,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:00","end":"04:50","startHours":3.9942812386672273,"endHours":4.841386173089057,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:38","end":"05:41","startHours":4.6296099394836,"endHours":5.688491107510887,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"15:00","startHours":14.159540451729189,"endHours":15.00664538615102,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:12","end":"18:36","startHours":18.19506512383834,"endHours":18.59506512383834,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:24","end":"18:55","startHours":18.39506512383834,"endHours":18.924505707851985,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:09","end":"19:54","startHours":18.14506512383834,"endHours":19.89506512383834,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:37","end":"00:28","startHours":23.6182256484637,"endHours":24.465330582885528,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:41","end":"07:17","startHours":5.688491107510887,"endHours":7.276812859551819,"quality":"auspicious"},{"name":"Roga","start":"07:17","end":"08:52","startHours":7.276812859551819,"endHours":8.865134611592751,"quality":"inauspicious"},{"name":"Udveg","start":"08:52","end":"10:27","startHours":8.865134611592751,"endHours":10.45345636363368,"quality":"inauspicious"},{"name":"Chala","start":"10:27","end":"12:03","startHours":10.45345636363368,"endHours":12.041778115674614,"quality":"neutral"},{"name":"Labha","start":"12:03","end":"13:38","startHours":12.041778115674614,"endHours":13.630099867715543,"quality":"auspicious"},{"name":"Amṛta","start":"13:38","end":"15:13","startHours":13.630099867715543,"endHours":15.218421619756477,"quality":"auspicious"},{"name":"Kāla","start":"15:13","end":"16:48","startHours":15.218421619756477,"endHours":16.806743371797406,"quality":"inauspicious"},{"name":"Śubha","start":"16:48","end":"18:24","startHours":16.806743371797406,"endHours":18.39506512383834,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:24","end":"19:48","startHours":18.39506512383834,"endHours":19.80674337179741,"quality":"auspicious"},{"name":"Kāla","start":"19:48","end":"21:13","startHours":19.80674337179741,"endHours":21.218421619756477,"quality":"inauspicious"},{"name":"Śubha","start":"21:13","end":"22:38","startHours":21.218421619756477,"endHours":22.630099867715543,"quality":"auspicious"},{"name":"Roga","start":"22:38","end":"00:03","startHours":22.630099867715543,"endHours":24.041778115674614,"quality":"inauspicious"},{"name":"Udveg","start":"00:03","end":"01:27","startHours":24.041778115674614,"endHours":25.453456363633684,"quality":"inauspicious"},{"name":"Chala","start":"01:27","end":"02:52","startHours":25.453456363633684,"endHours":26.86513461159275,"quality":"neutral"},{"name":"Labha","start":"02:52","end":"04:17","startHours":26.86513461159275,"endHours":28.276812859551818,"quality":"auspicious"},{"name":"Amṛta","start":"04:17","end":"05:41","startHours":28.276812859551818,"endHours":29.688491107510888,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:41","end":"06:41","startHours":5.688491107510887,"endHours":6.688491107510887,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:41","end":"07:41","startHours":6.688491107510887,"endHours":7.688491107510887,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:41","end":"08:41","startHours":7.688491107510887,"endHours":8.688491107510888,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:41","end":"09:41","startHours":8.688491107510888,"endHours":9.688491107510888,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:41","end":"10:41","startHours":9.688491107510888,"endHours":10.688491107510888,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:41","end":"11:41","startHours":10.688491107510888,"endHours":11.688491107510888,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:41","end":"12:41","startHours":11.688491107510888,"endHours":12.688491107510888,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:41","end":"13:41","startHours":12.688491107510888,"endHours":13.688491107510888,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:41","end":"14:41","startHours":13.688491107510888,"endHours":14.688491107510888,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:41","end":"15:41","startHours":14.688491107510888,"endHours":15.688491107510888,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:41","end":"16:41","startHours":15.688491107510888,"endHours":16.688491107510888,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:41","end":"17:41","startHours":16.688491107510888,"endHours":17.688491107510888,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:41","end":"18:41","startHours":17.688491107510888,"endHours":18.688491107510888,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:41","end":"19:41","startHours":18.688491107510888,"endHours":19.688491107510888,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:41","end":"20:41","startHours":19.688491107510888,"endHours":20.688491107510888,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:41","end":"21:41","startHours":20.688491107510888,"endHours":21.688491107510888,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:41","end":"22:41","startHours":21.688491107510888,"endHours":22.688491107510888,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:41","end":"23:41","startHours":22.688491107510888,"endHours":23.688491107510888,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:41","end":"00:41","startHours":23.688491107510888,"endHours":24.688491107510888,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:41","end":"01:41","startHours":24.688491107510888,"endHours":25.688491107510888,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:41","end":"02:41","startHours":25.688491107510888,"endHours":26.688491107510888,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:41","end":"03:41","startHours":26.688491107510888,"endHours":27.688491107510888,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:41","end":"04:41","startHours":27.688491107510888,"endHours":28.688491107510888,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:41","end":"05:41","startHours":28.688491107510888,"endHours":29.688491107510888,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"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":"South (Dakṣiṇa)","chandraVasa":"North-West","rahuVasa":"North-West","anandadiYoga":{"name":"Dhātṛ","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":8.544198812545865,"eotMinutes":-1.322686940476858,"ayanamsa":19.3867}},"calendars":{"vikram_samvat":1737,"vikram_samvatsara":"Śrīmukha","saka_samvat":1602,"saka_samvatsara":"Raudra","bengali_samvat":1087,"malayalam_era":856,"nanakshahi_year":211,"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 Trayodaśī · Vikram 1737 Śrīmukha · Śaka 1602 Raudra"},"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":"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 April 11, 1680 CE · Ayodhyā · Vidhyamitra","description":"April 11, 1680 CE for Ayodhyā: Śukla Trayodaśī, sūryodaya 05:41, sūryāsta 18:24.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1680-04-11","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1680-04-11","sa":"https://sa.vidhyamitra.com/city/ayodhya/1680-04-11","hi":"https://hi.vidhyamitra.com/city/ayodhya/1680-04-11","x-default":"https://vidhyamitra.com/city/ayodhya/1680-04-11"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T19:12:01.830Z","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":"2026-06-03T19:12:01.830Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T19:12:01.830Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}