{"id":"vidhyamitra:city-day:ayodhya:1981-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1981-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-07-13","date_display":"July 13, 1981 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":1981,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444798.770833,"kali_year":5083,"ahargana":1856333.2708,"sun":{"sidereal_longitude":86.6041,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":218.3381,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":131.7339,"elapsed_within_tithi_degrees":11.7339},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":218.3381,"elapsed_within_degrees":5.0047},"yoga":{"number":23,"name":"Śubha","sum_longitude":304.9422},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"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":1981,"month":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444798.770833,"ahargana":1856333.2708,"kali_year":5083,"ayanamsa_lahiri":23.595,"grahas":{"sun":{"sidereal_longitude":86.97736599999996,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":220.07976600000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":3},"retrograde":false,"latitude":4.0504},"mars":{"sidereal_longitude":63.03296599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":66.61236600000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":160.10616600000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"venus":{"sidereal_longitude":112.720166,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":160.305066,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":102.53,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":282.53,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1981,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444798.770833,"kali_year":5083,"ahargana":1856333.2708,"sun":{"sidereal_longitude":86.6041,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":218.3381,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":11,"name":"Ekādaśī","paksha":"Śukla","full_name":"Śukla Ekādaśī","elongation_degrees":131.7339,"elapsed_within_tithi_degrees":11.7339},"nakshatra":{"number":17,"name":"Anurādhā","pada":2,"moon_longitude":218.3381,"elapsed_within_degrees":5.0047},"yoga":{"number":23,"name":"Śubha","sum_longitude":304.9422},"karana":{"half_tithi_index":21,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.05,"elongation":131.734},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.05,"opposition_distance":48.266}},"eclipse_window_40days":[{"offset_days":4,"type":"lunar","occurs":true,"moon_latitude":1.092,"opposition_distance":2.128},{"offset_days":18,"type":"solar","occurs":true,"moon_latitude":0.181,"elongation":0.207}]},"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":"05:16","sunsetLocal":"18:57","solarNoonLocal":"12:07","dayLengthHours":13.696205125575446,"dayLengthDisplay":"13 Hours 41 Mins 46 Secs","nightLengthDisplay":"10 Hours 18 Mins 14 Secs","moonriseLocal":"15:41","moonsetLocal":"02:17","rahuKala":{"name":"Rāhu Kāla","start":"06:58","end":"08:41","startHours":6.973013558678555,"endHours":8.685039199375485,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:24","end":"12:07","startHours":10.397064840072417,"endHours":12.109090480769346,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:49","end":"15:32","startHours":13.821116121466279,"endHours":15.533141762163208,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:27","end":"08:55","startHours":8.456769113949228,"endHours":8.913309284801743,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"05:50","end":"06:12","startHours":5.831663131547268,"endHours":6.19689526822928,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:39","end":"12:34","startHours":11.652550309916831,"endHours":12.565630651621861,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:26","end":"04:21","startHours":3.4348272345715647,"endHours":4.347907576276595,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:07","end":"05:16","startHours":4.119637490850337,"endHours":5.260987917981624,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:24","end":"15:18","startHours":14.391791335031922,"endHours":15.304871676736951,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:45","end":"19:09","startHours":18.75719304355707,"endHours":19.15719304355707,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:57","end":"19:32","startHours":18.95719304355707,"endHours":19.527868257122712,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:42","end":"20:27","startHours":18.70719304355707,"endHours":20.45719304355707,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:39","end":"00:34","startHours":23.65255030991683,"endHours":24.565630651621863,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"05:16","end":"06:58","startHours":5.260987917981624,"endHours":6.973013558678555,"quality":"auspicious"},{"name":"Kāla","start":"06:58","end":"08:41","startHours":6.973013558678555,"endHours":8.685039199375485,"quality":"inauspicious"},{"name":"Śubha","start":"08:41","end":"10:24","startHours":8.685039199375485,"endHours":10.397064840072417,"quality":"auspicious"},{"name":"Roga","start":"10:24","end":"12:07","startHours":10.397064840072417,"endHours":12.109090480769346,"quality":"inauspicious"},{"name":"Udveg","start":"12:07","end":"13:49","startHours":12.109090480769346,"endHours":13.821116121466279,"quality":"inauspicious"},{"name":"Chala","start":"13:49","end":"15:32","startHours":13.821116121466279,"endHours":15.533141762163208,"quality":"neutral"},{"name":"Labha","start":"15:32","end":"17:15","startHours":15.533141762163208,"endHours":17.24516740286014,"quality":"auspicious"},{"name":"Amṛta","start":"17:15","end":"18:57","startHours":17.24516740286014,"endHours":18.95719304355707,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:57","end":"20:15","startHours":18.95719304355707,"endHours":20.24516740286014,"quality":"neutral"},{"name":"Labha","start":"20:15","end":"21:32","startHours":20.24516740286014,"endHours":21.533141762163208,"quality":"auspicious"},{"name":"Amṛta","start":"21:32","end":"22:49","startHours":21.533141762163208,"endHours":22.821116121466275,"quality":"auspicious"},{"name":"Kāla","start":"22:49","end":"00:07","startHours":22.821116121466275,"endHours":24.109090480769346,"quality":"inauspicious"},{"name":"Śubha","start":"00:07","end":"01:24","startHours":24.109090480769346,"endHours":25.397064840072417,"quality":"auspicious"},{"name":"Roga","start":"01:24","end":"02:41","startHours":25.397064840072417,"endHours":26.685039199375485,"quality":"inauspicious"},{"name":"Udveg","start":"02:41","end":"03:58","startHours":26.685039199375485,"endHours":27.973013558678552,"quality":"inauspicious"},{"name":"Chala","start":"03:58","end":"05:16","startHours":27.973013558678552,"endHours":29.260987917981623,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"05:16","end":"06:16","startHours":5.260987917981624,"endHours":6.260987917981624,"planetary_lord":"Moon"},{"name":"Hora 2","start":"06:16","end":"07:16","startHours":6.260987917981624,"endHours":7.260987917981624,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"07:16","end":"08:16","startHours":7.260987917981624,"endHours":8.260987917981623,"planetary_lord":"Venus"},{"name":"Hora 4","start":"08:16","end":"09:16","startHours":8.260987917981623,"endHours":9.260987917981623,"planetary_lord":"Sun"},{"name":"Hora 5","start":"09:16","end":"10:16","startHours":9.260987917981623,"endHours":10.260987917981623,"planetary_lord":"Mars"},{"name":"Hora 6","start":"10:16","end":"11:16","startHours":10.260987917981623,"endHours":11.260987917981623,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"11:16","end":"12:16","startHours":11.260987917981623,"endHours":12.260987917981623,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"12:16","end":"13:16","startHours":12.260987917981623,"endHours":13.260987917981623,"planetary_lord":"Moon"},{"name":"Hora 9","start":"13:16","end":"14:16","startHours":13.260987917981623,"endHours":14.260987917981623,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"14:16","end":"15:16","startHours":14.260987917981623,"endHours":15.260987917981623,"planetary_lord":"Venus"},{"name":"Hora 11","start":"15:16","end":"16:16","startHours":15.260987917981623,"endHours":16.260987917981623,"planetary_lord":"Sun"},{"name":"Hora 12","start":"16:16","end":"17:16","startHours":16.260987917981623,"endHours":17.260987917981623,"planetary_lord":"Mars"},{"name":"Hora 13","start":"17:16","end":"18:16","startHours":17.260987917981623,"endHours":18.260987917981623,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"18:16","end":"19:16","startHours":18.260987917981623,"endHours":19.260987917981623,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"19:16","end":"20:16","startHours":19.260987917981623,"endHours":20.260987917981623,"planetary_lord":"Moon"},{"name":"Hora 16","start":"20:16","end":"21:16","startHours":20.260987917981623,"endHours":21.260987917981623,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"21:16","end":"22:16","startHours":21.260987917981623,"endHours":22.260987917981623,"planetary_lord":"Venus"},{"name":"Hora 18","start":"22:16","end":"23:16","startHours":22.260987917981623,"endHours":23.260987917981623,"planetary_lord":"Sun"},{"name":"Hora 19","start":"23:16","end":"00:16","startHours":23.260987917981623,"endHours":24.260987917981623,"planetary_lord":"Mars"},{"name":"Hora 20","start":"00:16","end":"01:16","startHours":24.260987917981623,"endHours":25.260987917981623,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"01:16","end":"02:16","startHours":25.260987917981623,"endHours":26.260987917981623,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"02:16","end":"03:16","startHours":26.260987917981623,"endHours":27.260987917981623,"planetary_lord":"Moon"},{"name":"Hora 23","start":"03:16","end":"04:16","startHours":27.260987917981623,"endHours":28.260987917981623,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"04:16","end":"05:16","startHours":28.260987917981623,"endHours":29.260987917981623,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Revatī"],"unfavorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Citrā","Svātī","Viśākhā","Anurādhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"North-East","rahuVasa":"North-East","anandadiYoga":{"name":"Amṛta","quality":"Auspicious"},"drikRitu":"Grīṣma (Summer) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":21.861776299193007,"eotMinutes":-5.361428846160681,"ayanamsa":23.595}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Ekādaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"devshayani-ekadashi","name":"Devśayanī Ekādaśī","name_sanskrit":"देवशयनी एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Bhagavān Viṣṇu enters yoga-nidrā; Cāturmāsya begins.","vrata":true,"detection":{"tithi_number":11,"tithi_paksha":"Śukla","lunar_month":"Āṣāḍha"},"precedence":3},{"id":"ekadashi","name":"Ekādaśī","name_sanskrit":"एकादशी","tradition":"Vaishnava","associated_deity":"Bhagavān Viṣṇu","significance":"Sacred to Bhagavān Viṣṇu; vrata for purification.","vrata":true,"detection":{"any_of":[{"tithi_number":11},{"tithi_number":26}]},"precedence":5},{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi":"Mithuna"},"precedence":5}],"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 July 13, 1981 CE · Ayodhyā · Vidhyamitra","description":"July 13, 1981 CE for Ayodhyā: Śukla Ekādaśī, sūryodaya 05:16, sūryāsta 18:57.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1981-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1981-07-13","sa":"https://sa.vidhyamitra.com/city/ayodhya/1981-07-13","hi":"https://hi.vidhyamitra.com/city/ayodhya/1981-07-13","x-default":"https://vidhyamitra.com/city/ayodhya/1981-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T09:44:03.914Z","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":"2026-05-18T09:44:03.914Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T09:44:03.914Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}