{"id":"vidhyamitra:city-day:ayodhya:2180-09-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/2180-09-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2180-09-13","date_display":"September 13, 2180 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":2180,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517544.770833,"kali_year":5282,"ahargana":1929079.2708,"sun":{"sidereal_longitude":143.4772,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":64.9744,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":281.4972,"elapsed_within_tithi_degrees":5.4972},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4,"moon_longitude":64.9744,"elapsed_within_degrees":11.6411},"yoga":{"number":16,"name":"Siddhi","sum_longitude":208.4516},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"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":2180,"month":9,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2517544.770833,"ahargana":1929079.2708,"kali_year":5282,"ayanamsa_lahiri":26.3772,"grahas":{"sun":{"sidereal_longitude":144.63363400000003,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":63.83723399999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false,"latitude":-2.6987},"mars":{"sidereal_longitude":47.71703400000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":157.86783400000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"jupiter":{"sidereal_longitude":103.830334,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"venus":{"sidereal_longitude":107.49413400000003,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":80.30143399999997,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":208.0969,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":28.0969,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":3,"name":"Kṛttikā","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":2180,"month":9,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2517544.770833,"kali_year":5282,"ahargana":1929079.2708,"sun":{"sidereal_longitude":143.4772,"rashi":5,"rashi_name":"Siṃha"},"moon":{"sidereal_longitude":64.9744,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":24,"name":"Navamī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Navamī","elongation_degrees":281.4972,"elapsed_within_tithi_degrees":5.4972},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":4,"moon_longitude":64.9744,"elapsed_within_degrees":11.6411},"yoga":{"number":16,"name":"Siddhi","sum_longitude":208.4516},"karana":{"half_tithi_index":46,"name":"Taitila"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.699,"elongation":78.503},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.699,"opposition_distance":101.497}},"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":"18:07","solarNoonLocal":"11:56","dayLengthHours":12.365074977998596,"dayLengthDisplay":"12 Hours 21 Mins 54 Secs","nightLengthDisplay":"11 Hours 38 Mins 06 Secs","moonriseLocal":"23:40","moonsetLocal":"13:27","rahuKala":{"name":"Rāhu Kāla","start":"11:56","end":"13:29","startHours":11.9405021511689,"endHours":13.486136523418725,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:18","end":"08:51","startHours":7.3035990344194275,"endHours":8.849233406669253,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:24","end":"11:56","startHours":10.394867778919076,"endHours":11.9405021511689,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:39","end":"09:03","startHours":8.643148823702608,"endHours":9.055317989635896,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:16","end":"06:36","startHours":6.2731761195862115,"endHours":6.60291145233284,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:32","end":"12:21","startHours":11.528332985235613,"endHours":12.352671317102187,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:07","end":"04:56","startHours":4.109287998436457,"endHours":4.93362633030303,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:44","end":"05:45","startHours":4.727541747336387,"endHours":5.757964662169603,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:00","end":"14:50","startHours":14.001347980835334,"endHours":14.825686312701906,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:55","end":"18:19","startHours":17.9230396401682,"endHours":18.323039640168197,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:07","end":"18:38","startHours":18.123039640168198,"endHours":18.638251097584806,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:52","end":"19:37","startHours":17.873039640168198,"endHours":19.623039640168198,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:32","end":"00:21","startHours":23.528332985235615,"endHours":24.352671317102185,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:45","end":"07:18","startHours":5.757964662169603,"endHours":7.3035990344194275,"quality":"auspicious"},{"name":"Amṛta","start":"07:18","end":"08:51","startHours":7.3035990344194275,"endHours":8.849233406669253,"quality":"auspicious"},{"name":"Kāla","start":"08:51","end":"10:24","startHours":8.849233406669253,"endHours":10.394867778919076,"quality":"inauspicious"},{"name":"Śubha","start":"10:24","end":"11:56","startHours":10.394867778919076,"endHours":11.9405021511689,"quality":"auspicious"},{"name":"Roga","start":"11:56","end":"13:29","startHours":11.9405021511689,"endHours":13.486136523418725,"quality":"inauspicious"},{"name":"Udveg","start":"13:29","end":"15:02","startHours":13.486136523418725,"endHours":15.03177089566855,"quality":"inauspicious"},{"name":"Chala","start":"15:02","end":"16:35","startHours":15.03177089566855,"endHours":16.577405267918373,"quality":"neutral"},{"name":"Labha","start":"16:35","end":"18:07","startHours":16.577405267918373,"endHours":18.123039640168198,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:07","end":"19:35","startHours":18.123039640168198,"endHours":19.577405267918373,"quality":"inauspicious"},{"name":"Chala","start":"19:35","end":"21:02","startHours":19.577405267918373,"endHours":21.03177089566855,"quality":"neutral"},{"name":"Labha","start":"21:02","end":"22:29","startHours":21.03177089566855,"endHours":22.486136523418725,"quality":"auspicious"},{"name":"Amṛta","start":"22:29","end":"23:56","startHours":22.486136523418725,"endHours":23.9405021511689,"quality":"auspicious"},{"name":"Kāla","start":"23:56","end":"01:24","startHours":23.9405021511689,"endHours":25.394867778919075,"quality":"inauspicious"},{"name":"Śubha","start":"01:24","end":"02:51","startHours":25.394867778919075,"endHours":26.84923340666925,"quality":"auspicious"},{"name":"Roga","start":"02:51","end":"04:18","startHours":26.84923340666925,"endHours":28.303599034419427,"quality":"inauspicious"},{"name":"Udveg","start":"04:18","end":"05:45","startHours":28.303599034419427,"endHours":29.757964662169602,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:45","end":"06:45","startHours":5.757964662169603,"endHours":6.757964662169603,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:45","end":"07:45","startHours":6.757964662169603,"endHours":7.757964662169603,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:45","end":"08:45","startHours":7.757964662169603,"endHours":8.757964662169602,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:45","end":"09:45","startHours":8.757964662169602,"endHours":9.757964662169602,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:45","end":"10:45","startHours":9.757964662169602,"endHours":10.757964662169602,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:45","end":"11:45","startHours":10.757964662169602,"endHours":11.757964662169602,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:45","end":"12:45","startHours":11.757964662169602,"endHours":12.757964662169602,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:45","end":"13:45","startHours":12.757964662169602,"endHours":13.757964662169602,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:45","end":"14:45","startHours":13.757964662169602,"endHours":14.757964662169602,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:45","end":"15:45","startHours":14.757964662169602,"endHours":15.757964662169602,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:45","end":"16:45","startHours":15.757964662169602,"endHours":16.757964662169602,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:45","end":"17:45","startHours":16.757964662169602,"endHours":17.757964662169602,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:45","end":"18:45","startHours":17.757964662169602,"endHours":18.757964662169602,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:45","end":"19:45","startHours":18.757964662169602,"endHours":19.757964662169602,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:45","end":"20:45","startHours":19.757964662169602,"endHours":20.757964662169602,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:45","end":"21:45","startHours":20.757964662169602,"endHours":21.757964662169602,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:45","end":"22:45","startHours":21.757964662169602,"endHours":22.757964662169602,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:45","end":"23:45","startHours":22.757964662169602,"endHours":23.757964662169602,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:45","end":"00:45","startHours":23.757964662169602,"endHours":24.757964662169602,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:45","end":"01:45","startHours":24.757964662169602,"endHours":25.757964662169602,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:45","end":"02:45","startHours":25.757964662169602,"endHours":26.757964662169602,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:45","end":"03:45","startHours":26.757964662169602,"endHours":27.757964662169602,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:45","end":"04:45","startHours":27.757964662169602,"endHours":28.757964662169602,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:45","end":"05:45","startHours":28.757964662169602,"endHours":29.757964662169602,"planetary_lord":"Sun"}],"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":["Meṣa","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"South-West","anandadiYoga":{"name":"Mṛtyu","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":3.562929609990162,"eotMinutes":4.753870929866006,"ayanamsa":26.3772}},"calendars":{"vikram_samvat":2237,"vikram_samvatsara":"Vijaya","saka_samvat":2102,"saka_samvatsara":"Vikrama","bengali_samvat":1587,"malayalam_era":1356,"nanakshahi_year":711,"lunar_month":"Bhādrapada","lunar_month_paksha_full":"Bhādrapada Kṛṣṇa Pakṣa","solar_month":"Siṃha (Āvaṇi)","ritu":"Varṣā (Monsoon)","display_summary":"Bhādrapada Kṛṣṇa Navamī · Vikram 2237 Vijaya · Śaka 2102 Vikrama"},"festivals":[{"id":"simha-sankranti","name":"Siṁha Saṅkrānti","name_sanskrit":"सिंह सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Leo.","vrata":false,"detection":{"sun_rashi":"Siṃha"},"precedence":5}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — 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, 2180 CE · Ayodhyā · Vidhyamitra","description":"September 13, 2180 CE for Ayodhyā: Kṛṣṇa Navamī, sūryodaya 05:45, sūryāsta 18:07.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/2180-09-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/2180-09-13","sa":"https://sa.vidhyamitra.com/city/ayodhya/2180-09-13","hi":"https://hi.vidhyamitra.com/city/ayodhya/2180-09-13","x-default":"https://vidhyamitra.com/city/ayodhya/2180-09-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-24T20:23:02.233Z","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":"2026-05-24T20:23:02.233Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-24T20:23:02.233Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}