{"id":"vidhyamitra:city-day:ayodhya:2100-09-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2100-09-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2100-09-13","date_display":"September 13, 2100 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":2100,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488324.770833,"kali_year":5202,"ahargana":1899859.2708,"sun":{"sidereal_longitude":144.1566,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":258.2805,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":114.1239,"elapsed_within_tithi_degrees":6.1239},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":258.2805,"elapsed_within_degrees":4.9472},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":42.4371},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":2100,"month":9,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2488324.770833,"ahargana":1899859.2708,"kali_year":5202,"ayanamsa_lahiri":25.2597,"grahas":{"sun":{"sidereal_longitude":145.12035300000002,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":260.80055300000004,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false,"latitude":-3.8165},"mars":{"sidereal_longitude":152.97815300000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":170.51335300000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":178.017653,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":104.216453,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":178.36235299999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":316.3131,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":136.3131,"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":2100,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2488324.770833,"kali_year":5202,"ahargana":1899859.2708,"sun":{"sidereal_longitude":144.1566,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":258.2805,"rashi":9,"rashi_name":"Dhanu"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":114.1239,"elapsed_within_tithi_degrees":6.1239},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2,"moon_longitude":258.2805,"elapsed_within_degrees":4.9472},"yoga":{"number":4,"name":"Saubhāgya","sum_longitude":42.4371},"karana":{"half_tithi_index":19,"name":"Gara"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.816,"elongation":114.124},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.816,"opposition_distance":65.876}},"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":"05:45","sunsetLocal":"18:08","solarNoonLocal":"11:56","dayLengthHours":12.38190804854053,"dayLengthDisplay":"12 Hours 22 Mins 55 Secs","nightLengthDisplay":"11 Hours 37 Mins 05 Secs","moonriseLocal":"14:25","moonsetLocal":"00:54","rahuKala":{"name":"Rāhu Kāla","start":"07:18","end":"08:51","startHours":7.297286632966202,"endHours":8.845025139033769,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:24","end":"11:56","startHours":10.392763645101335,"endHours":11.9405021511689,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:29","end":"15:02","startHours":13.488240657236467,"endHours":15.035979163304035,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:38","end":"09:03","startHours":8.638660004891426,"endHours":9.05139027317611,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:16","end":"06:36","startHours":6.265460962254491,"endHours":6.595645176882239,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:32","end":"12:21","startHours":11.527771882884215,"endHours":12.353232419453585,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:06","end":"04:55","startHours":4.098627053759898,"endHours":4.9240875903292665,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:43","end":"05:45","startHours":4.717722456186925,"endHours":5.7495481268986355,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:00","end":"14:50","startHours":14.004153492592323,"endHours":14.829614029161691,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:56","end":"18:20","startHours":17.931456175439166,"endHours":18.331456175439165,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:08","end":"18:39","startHours":18.131456175439165,"endHours":18.64736901079502,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:53","end":"19:38","startHours":17.881456175439165,"endHours":19.631456175439165,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:32","end":"00:21","startHours":23.527771882884217,"endHours":24.353232419453583,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:45","end":"07:18","startHours":5.7495481268986355,"endHours":7.297286632966202,"quality":"auspicious"},{"name":"Kāla","start":"07:18","end":"08:51","startHours":7.297286632966202,"endHours":8.845025139033769,"quality":"inauspicious"},{"name":"Śubha","start":"08:51","end":"10:24","startHours":8.845025139033769,"endHours":10.392763645101335,"quality":"auspicious"},{"name":"Roga","start":"10:24","end":"11:56","startHours":10.392763645101335,"endHours":11.9405021511689,"quality":"inauspicious"},{"name":"Udveg","start":"11:56","end":"13:29","startHours":11.9405021511689,"endHours":13.488240657236467,"quality":"inauspicious"},{"name":"Chala","start":"13:29","end":"15:02","startHours":13.488240657236467,"endHours":15.035979163304035,"quality":"neutral"},{"name":"Labha","start":"15:02","end":"16:35","startHours":15.035979163304035,"endHours":16.583717669371598,"quality":"auspicious"},{"name":"Amṛta","start":"16:35","end":"18:08","startHours":16.583717669371598,"endHours":18.131456175439165,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:08","end":"19:35","startHours":18.131456175439165,"endHours":19.583717669371598,"quality":"neutral"},{"name":"Labha","start":"19:35","end":"21:02","startHours":19.583717669371598,"endHours":21.035979163304035,"quality":"auspicious"},{"name":"Amṛta","start":"21:02","end":"22:29","startHours":21.035979163304035,"endHours":22.488240657236467,"quality":"auspicious"},{"name":"Kāla","start":"22:29","end":"23:56","startHours":22.488240657236467,"endHours":23.9405021511689,"quality":"inauspicious"},{"name":"Śubha","start":"23:56","end":"01:24","startHours":23.9405021511689,"endHours":25.392763645101333,"quality":"auspicious"},{"name":"Roga","start":"01:24","end":"02:51","startHours":25.392763645101333,"endHours":26.845025139033766,"quality":"inauspicious"},{"name":"Udveg","start":"02:51","end":"04:18","startHours":26.845025139033766,"endHours":28.297286632966202,"quality":"inauspicious"},{"name":"Chala","start":"04:18","end":"05:45","startHours":28.297286632966202,"endHours":29.749548126898635,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.7495481268986355,"endHours":6.7495481268986355,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.7495481268986355,"endHours":7.7495481268986355,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.7495481268986355,"endHours":8.749548126898635,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.749548126898635,"endHours":9.749548126898635,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.749548126898635,"endHours":10.749548126898635,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.749548126898635,"endHours":11.749548126898635,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.749548126898635,"endHours":12.749548126898635,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.749548126898635,"endHours":13.749548126898635,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.749548126898635,"endHours":14.749548126898635,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.749548126898635,"endHours":15.749548126898635,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.749548126898635,"endHours":16.749548126898635,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.749548126898635,"endHours":17.749548126898635,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.749548126898635,"endHours":18.749548126898635,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.749548126898635,"endHours":19.749548126898635,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.749548126898635,"endHours":20.749548126898635,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.749548126898635,"endHours":21.749548126898635,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.749548126898635,"endHours":22.749548126898635,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.749548126898635,"endHours":23.749548126898635,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.749548126898635,"endHours":24.749548126898635,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.749548126898635,"endHours":25.749548126898635,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.749548126898635,"endHours":26.749548126898635,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.749548126898635,"endHours":27.749548126898635,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.749548126898635,"endHours":28.749548126898635,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.749548126898635,"endHours":29.749548126898635,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"East","rahuVasa":"North-East","anandadiYoga":{"name":"Mātaṇga","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":3.8110232314898598,"eotMinutes":4.753870929866006,"ayanamsa":25.2597}},"calendars":{"vikram_samvat":2157,"vikram_samvatsara":"Śrīmukha","saka_samvat":2022,"saka_samvatsara":"Raudra","bengali_samvat":1507,"malayalam_era":1276,"nanakshahi_year":631,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Bhādrapada","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Śukla Daśamī · Vikram 2157 Śrīmukha · Śaka 2022 Raudra"},"festivals":[],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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 September 13, 2100 CE · Ayodhyā · Vidhyamitra","description":"September 13, 2100 CE for Ayodhyā: Śukla Daśamī, sūryodaya 05:45, sūryāsta 18:08.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2100-09-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2100-09-13","sa":"https://sa.vidhyamitra.com/city/ayodhya/2100-09-13","hi":"https://hi.vidhyamitra.com/city/ayodhya/2100-09-13","x-default":"https://vidhyamitra.com/city/ayodhya/2100-09-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-01T08:10:47.746Z","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":"2026-06-01T08:10:47.746Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-01T08:10:47.746Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}