{"id":"vidhyamitra:city-day:ayodhya:1981-04-17:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1981-04-17","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1981-04-17","date_display":"April 17, 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":4,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444711.770833,"kali_year":5083,"ahargana":1856246.2708,"sun":{"sidereal_longitude":3.5242,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":157.8658,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":154.3416,"elapsed_within_tithi_degrees":10.3416},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":157.8658,"elapsed_within_degrees":11.1992},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":161.39},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"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":4,"day":17,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2444711.770833,"ahargana":1856246.2708,"kali_year":5083,"ayanamsa_lahiri":23.5917,"grahas":{"sun":{"sidereal_longitude":3.3591900000000123,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":158.11369000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false,"latitude":3.4821},"mars":{"sidereal_longitude":0.43049000000002025,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":352.14829,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":159.34969,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":true},"venus":{"sidereal_longitude":6.126890000000003,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":161.05818999999997,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":107.1397,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Āśleṣā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":287.1397,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"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":4,"day":17,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2444711.770833,"kali_year":5083,"ahargana":1856246.2708,"sun":{"sidereal_longitude":3.5242,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":157.8658,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":154.3416,"elapsed_within_tithi_degrees":10.3416},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4,"moon_longitude":157.8658,"elapsed_within_degrees":11.1992},"yoga":{"number":13,"name":"Vyāghāta","sum_longitude":161.39},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.482,"elongation":154.342},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.482,"opposition_distance":25.658}},"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":"05:36","sunsetLocal":"18:26","solarNoonLocal":"12:01","dayLengthHours":12.835344478887997,"dayLengthDisplay":"12 Hours 50 Mins 07 Secs","nightLengthDisplay":"11 Hours 09 Mins 53 Secs","moonriseLocal":"16:19","moonsetLocal":"04:21","rahuKala":{"name":"Rāhu Kāla","start":"10:25","end":"12:01","startHours":10.410914457143502,"endHours":12.015332517004502,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:13","end":"16:50","startHours":15.2241686367265,"endHours":16.8285866965875,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"07:12","end":"08:48","startHours":7.2020783374215025,"endHours":8.806496397282501,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:36","end":"09:01","startHours":8.592573989301036,"endHours":9.020418805263969,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:08","end":"06:28","startHours":6.13246629751417,"endHours":6.474742150284516,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.587487701041569,"endHours":12.443177332967435,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:53","end":"04:45","startHours":3.88628101370877,"endHours":4.741970645634637,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:32","end":"05:36","startHours":4.52804823765317,"endHours":5.597660277560503,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"15:01","startHours":14.154556596819166,"endHours":15.010246228745032,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:14","end":"18:38","startHours":18.2330047564485,"endHours":18.6330047564485,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:26","end":"18:58","startHours":18.4330047564485,"endHours":18.967810776402168,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:11","end":"19:56","startHours":18.1830047564485,"endHours":19.9330047564485,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.587487701041567,"endHours":24.443177332967437,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"05:36","end":"07:12","startHours":5.597660277560503,"endHours":7.2020783374215025,"quality":"neutral"},{"name":"Labha","start":"07:12","end":"08:48","startHours":7.2020783374215025,"endHours":8.806496397282501,"quality":"auspicious"},{"name":"Amṛta","start":"08:48","end":"10:25","startHours":8.806496397282501,"endHours":10.410914457143502,"quality":"auspicious"},{"name":"Kāla","start":"10:25","end":"12:01","startHours":10.410914457143502,"endHours":12.015332517004502,"quality":"inauspicious"},{"name":"Śubha","start":"12:01","end":"13:37","startHours":12.015332517004502,"endHours":13.619750576865503,"quality":"auspicious"},{"name":"Roga","start":"13:37","end":"15:13","startHours":13.619750576865503,"endHours":15.2241686367265,"quality":"inauspicious"},{"name":"Udveg","start":"15:13","end":"16:50","startHours":15.2241686367265,"endHours":16.8285866965875,"quality":"inauspicious"},{"name":"Chala","start":"16:50","end":"18:26","startHours":16.8285866965875,"endHours":18.4330047564485,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:26","end":"19:50","startHours":18.4330047564485,"endHours":19.8285866965875,"quality":"inauspicious"},{"name":"Udveg","start":"19:50","end":"21:13","startHours":19.8285866965875,"endHours":21.224168636726503,"quality":"inauspicious"},{"name":"Chala","start":"21:13","end":"22:37","startHours":21.224168636726503,"endHours":22.619750576865503,"quality":"neutral"},{"name":"Labha","start":"22:37","end":"00:01","startHours":22.619750576865503,"endHours":24.015332517004502,"quality":"auspicious"},{"name":"Amṛta","start":"00:01","end":"01:25","startHours":24.015332517004502,"endHours":25.4109144571435,"quality":"auspicious"},{"name":"Kāla","start":"01:25","end":"02:48","startHours":25.4109144571435,"endHours":26.8064963972825,"quality":"inauspicious"},{"name":"Śubha","start":"02:48","end":"04:12","startHours":26.8064963972825,"endHours":28.202078337421504,"quality":"auspicious"},{"name":"Roga","start":"04:12","end":"05:36","startHours":28.202078337421504,"endHours":29.597660277560504,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:36","end":"06:36","startHours":5.597660277560503,"endHours":6.597660277560503,"planetary_lord":"Venus"},{"name":"Hora 2","start":"06:36","end":"07:36","startHours":6.597660277560503,"endHours":7.597660277560503,"planetary_lord":"Sun"},{"name":"Hora 3","start":"07:36","end":"08:36","startHours":7.597660277560503,"endHours":8.597660277560504,"planetary_lord":"Mars"},{"name":"Hora 4","start":"08:36","end":"09:36","startHours":8.597660277560504,"endHours":9.597660277560504,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"09:36","end":"10:36","startHours":9.597660277560504,"endHours":10.597660277560504,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"10:36","end":"11:36","startHours":10.597660277560504,"endHours":11.597660277560504,"planetary_lord":"Moon"},{"name":"Hora 7","start":"11:36","end":"12:36","startHours":11.597660277560504,"endHours":12.597660277560504,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"12:36","end":"13:36","startHours":12.597660277560504,"endHours":13.597660277560504,"planetary_lord":"Venus"},{"name":"Hora 9","start":"13:36","end":"14:36","startHours":13.597660277560504,"endHours":14.597660277560504,"planetary_lord":"Sun"},{"name":"Hora 10","start":"14:36","end":"15:36","startHours":14.597660277560504,"endHours":15.597660277560504,"planetary_lord":"Mars"},{"name":"Hora 11","start":"15:36","end":"16:36","startHours":15.597660277560504,"endHours":16.597660277560504,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"16:36","end":"17:36","startHours":16.597660277560504,"endHours":17.597660277560504,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"17:36","end":"18:36","startHours":17.597660277560504,"endHours":18.597660277560504,"planetary_lord":"Moon"},{"name":"Hora 14","start":"18:36","end":"19:36","startHours":18.597660277560504,"endHours":19.597660277560504,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"19:36","end":"20:36","startHours":19.597660277560504,"endHours":20.597660277560504,"planetary_lord":"Venus"},{"name":"Hora 16","start":"20:36","end":"21:36","startHours":20.597660277560504,"endHours":21.597660277560504,"planetary_lord":"Sun"},{"name":"Hora 17","start":"21:36","end":"22:36","startHours":21.597660277560504,"endHours":22.597660277560504,"planetary_lord":"Mars"},{"name":"Hora 18","start":"22:36","end":"23:36","startHours":22.597660277560504,"endHours":23.597660277560504,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"23:36","end":"00:36","startHours":23.597660277560504,"endHours":24.597660277560504,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"00:36","end":"01:36","startHours":24.597660277560504,"endHours":25.597660277560504,"planetary_lord":"Moon"},{"name":"Hora 21","start":"01:36","end":"02:36","startHours":25.597660277560504,"endHours":26.597660277560504,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"02:36","end":"03:36","startHours":26.597660277560504,"endHours":27.597660277560504,"planetary_lord":"Venus"},{"name":"Hora 23","start":"03:36","end":"04:36","startHours":27.597660277560504,"endHours":28.597660277560504,"planetary_lord":"Sun"},{"name":"Hora 24","start":"04:36","end":"05:36","startHours":28.597660277560504,"endHours":29.597660277560504,"planetary_lord":"Mars"}],"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":"West (Paścim)","chandraVasa":"North-West","rahuVasa":"South-East","anandadiYoga":{"name":"Prajāpati","quality":"Auspicious"},"drikRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":10.385075713561033,"eotMinutes":0.2640489797298191,"ayanamsa":23.5917}},"calendars":{"vikram_samvat":2038,"vikram_samvatsara":"Bhāva","saka_samvat":1903,"saka_samvatsara":"Durmati","bengali_samvat":1388,"malayalam_era":1157,"nanakshahi_year":512,"lunar_month":"Vaiśākha","lunar_month_paksha_full":"Vaiśākha Śukla Pakṣa","solar_month":"Mēsha (Cittirai / Vaiśākhī)","ritu":"Vasanta (Spring)","display_summary":"Vaiśākha Śukla Trayodaśī · Vikram 2038 Bhāva · Śaka 1903 Durmati"},"festivals":[{"id":"mesha-sankranti","name":"Meṣa Saṅkrānti (Vaiśākhī / Vishu / Pohelā Boishākh / Bihu)","name_sanskrit":"मेष सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Aries; solar new year. Regional: Vaiśākhī (Punjab) · Vishu (Kerala) · Pohelā Boishākh (Bengal) · Bihu (Assam) · Tamil Puthāṇḍu.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":1},{"id":"baisakhi","name":"Baisakhi (Vaiśākhī)","name_sanskrit":"वैशाखी","tradition":"Regional","associated_deity":"Sūrya + Khalsa Pantha (Sikh)","significance":"Punjab New Year + Sikh Khalsa founding day.","vrata":false,"detection":{"sun_rashi":"Meṣa"},"precedence":2},{"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":"shukra-walk","name":"Śukra Walk","name_sanskrit":"शुक्र यात्रा","type":"graha","description":"Beauty + creativity in dharma + BG 10.36.","step_count":5,"url":"/walk/shukra-walk"},"reason":"Śukravāra (Friday) — 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 17, 1981 CE · Ayodhyā · Vidhyamitra","description":"April 17, 1981 CE for Ayodhyā: Śukla Trayodaśī, sūryodaya 05:36, sūryāsta 18:26.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1981-04-17","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1981-04-17","sa":"https://sa.vidhyamitra.com/city/ayodhya/1981-04-17","hi":"https://hi.vidhyamitra.com/city/ayodhya/1981-04-17","x-default":"https://vidhyamitra.com/city/ayodhya/1981-04-17"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-18T10:40:35.135Z","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":"2026-05-18T10:40:35.135Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-18T10:40:35.135Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}