{"id":"vidhyamitra:city-day:ayodhya:1973-04-15:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1973-04-15","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-04-15","date_display":"April 15, 1973 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":1973,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441787.770833,"kali_year":5074,"ahargana":1853322.2708,"sun":{"sidereal_longitude":1.643,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":152.2769,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":150.6339,"elapsed_within_tithi_degrees":6.6339},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.2769,"elapsed_within_degrees":5.6102},"yoga":{"number":12,"name":"Dhruva","sum_longitude":153.9199},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"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":1973,"month":4,"day":15,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441787.770833,"ahargana":1853322.2708,"kali_year":5074,"ayanamsa_lahiri":23.4798,"grahas":{"sun":{"sidereal_longitude":1.4522079999999846,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"moon":{"sidereal_longitude":151.83040800000003,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false,"latitude":-4.2337},"mars":{"sidereal_longitude":290.490508,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":334.620008,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":285.94720800000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"venus":{"sidereal_longitude":3.1883080000000064,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":53.56960800000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":262.0673,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":82.0673,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","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":1973,"month":4,"day":15,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441787.770833,"kali_year":5074,"ahargana":1853322.2708,"sun":{"sidereal_longitude":1.643,"rashi":1,"rashi_name":"Meṣa"},"moon":{"sidereal_longitude":152.2769,"rashi":6,"rashi_name":"Kanyā"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":150.6339,"elapsed_within_tithi_degrees":6.6339},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2,"moon_longitude":152.2769,"elapsed_within_degrees":5.6102},"yoga":{"number":12,"name":"Dhruva","sum_longitude":153.9199},"karana":{"half_tithi_index":25,"name":"Taitila"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.234,"elongation":150.634},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.234,"opposition_distance":29.366}},"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":"05:38","sunsetLocal":"18:25","solarNoonLocal":"12:01","dayLengthHours":12.78384685785669,"dayLengthDisplay":"12 Hours 47 Mins 02 Secs","nightLengthDisplay":"11 Hours 12 Mins 58 Secs","moonriseLocal":"15:57","moonsetLocal":"04:09","rahuKala":{"name":"Rāhu Kāla","start":"16:49","end":"18:25","startHours":16.81767797265971,"endHours":18.415658829891797,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:01","end":"13:37","startHours":12.023735400963453,"endHours":13.621716258195537,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:13","end":"16:49","startHours":15.219697115427625,"endHours":16.81767797265971,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:37","end":"09:02","startHours":8.614709572201669,"endHours":9.040837800796892,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:10","end":"06:30","startHours":6.164472257779136,"endHours":6.505374840655314,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:36","end":"12:27","startHours":11.59760717236823,"endHours":12.449863629558676,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:56","end":"04:47","startHours":3.9272990576542153,"endHours":4.779555514844661,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:34","end":"05:38","startHours":4.56649140054705,"endHours":5.631811972035107,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"15:00","startHours":14.154376543939566,"endHours":15.006633001130012,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:13","end":"18:37","startHours":18.215658829891797,"endHours":18.615658829891796,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:25","end":"18:57","startHours":18.415658829891797,"endHours":18.948319115635826,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:10","end":"19:55","startHours":18.165658829891797,"endHours":19.915658829891797,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:36","end":"00:27","startHours":23.59760717236823,"endHours":24.449863629558674,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"05:38","end":"07:14","startHours":5.631811972035107,"endHours":7.229792829267193,"quality":"inauspicious"},{"name":"Chala","start":"07:14","end":"08:50","startHours":7.229792829267193,"endHours":8.82777368649928,"quality":"neutral"},{"name":"Labha","start":"08:50","end":"10:26","startHours":8.82777368649928,"endHours":10.425754543731365,"quality":"auspicious"},{"name":"Amṛta","start":"10:26","end":"12:01","startHours":10.425754543731365,"endHours":12.023735400963453,"quality":"auspicious"},{"name":"Kāla","start":"12:01","end":"13:37","startHours":12.023735400963453,"endHours":13.621716258195537,"quality":"inauspicious"},{"name":"Śubha","start":"13:37","end":"15:13","startHours":13.621716258195537,"endHours":15.219697115427625,"quality":"auspicious"},{"name":"Roga","start":"15:13","end":"16:49","startHours":15.219697115427625,"endHours":16.81767797265971,"quality":"inauspicious"},{"name":"Udveg","start":"16:49","end":"18:25","startHours":16.81767797265971,"endHours":18.415658829891797,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:25","end":"19:49","startHours":18.415658829891797,"endHours":19.81767797265971,"quality":"auspicious"},{"name":"Roga","start":"19:49","end":"21:13","startHours":19.81767797265971,"endHours":21.219697115427625,"quality":"inauspicious"},{"name":"Udveg","start":"21:13","end":"22:37","startHours":21.219697115427625,"endHours":22.621716258195537,"quality":"inauspicious"},{"name":"Chala","start":"22:37","end":"00:01","startHours":22.621716258195537,"endHours":24.023735400963453,"quality":"neutral"},{"name":"Labha","start":"00:01","end":"01:26","startHours":24.023735400963453,"endHours":25.425754543731365,"quality":"auspicious"},{"name":"Amṛta","start":"01:26","end":"02:50","startHours":25.425754543731365,"endHours":26.827773686499278,"quality":"auspicious"},{"name":"Kāla","start":"02:50","end":"04:14","startHours":26.827773686499278,"endHours":28.229792829267193,"quality":"inauspicious"},{"name":"Śubha","start":"04:14","end":"05:38","startHours":28.229792829267193,"endHours":29.63181197203511,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:38","end":"06:38","startHours":5.631811972035107,"endHours":6.631811972035107,"planetary_lord":"Sun"},{"name":"Hora 2","start":"06:38","end":"07:38","startHours":6.631811972035107,"endHours":7.631811972035107,"planetary_lord":"Mars"},{"name":"Hora 3","start":"07:38","end":"08:38","startHours":7.631811972035107,"endHours":8.631811972035107,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"08:38","end":"09:38","startHours":8.631811972035107,"endHours":9.631811972035107,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"09:38","end":"10:38","startHours":9.631811972035107,"endHours":10.631811972035107,"planetary_lord":"Moon"},{"name":"Hora 6","start":"10:38","end":"11:38","startHours":10.631811972035107,"endHours":11.631811972035107,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"11:38","end":"12:38","startHours":11.631811972035107,"endHours":12.631811972035107,"planetary_lord":"Venus"},{"name":"Hora 8","start":"12:38","end":"13:38","startHours":12.631811972035107,"endHours":13.631811972035107,"planetary_lord":"Sun"},{"name":"Hora 9","start":"13:38","end":"14:38","startHours":13.631811972035107,"endHours":14.631811972035107,"planetary_lord":"Mars"},{"name":"Hora 10","start":"14:38","end":"15:38","startHours":14.631811972035107,"endHours":15.631811972035107,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"15:38","end":"16:38","startHours":15.631811972035107,"endHours":16.63181197203511,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"16:38","end":"17:38","startHours":16.63181197203511,"endHours":17.63181197203511,"planetary_lord":"Moon"},{"name":"Hora 13","start":"17:38","end":"18:38","startHours":17.63181197203511,"endHours":18.63181197203511,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"18:38","end":"19:38","startHours":18.63181197203511,"endHours":19.63181197203511,"planetary_lord":"Venus"},{"name":"Hora 15","start":"19:38","end":"20:38","startHours":19.63181197203511,"endHours":20.63181197203511,"planetary_lord":"Sun"},{"name":"Hora 16","start":"20:38","end":"21:38","startHours":20.63181197203511,"endHours":21.63181197203511,"planetary_lord":"Mars"},{"name":"Hora 17","start":"21:38","end":"22:38","startHours":21.63181197203511,"endHours":22.63181197203511,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"22:38","end":"23:38","startHours":22.63181197203511,"endHours":23.63181197203511,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"23:38","end":"00:38","startHours":23.63181197203511,"endHours":24.63181197203511,"planetary_lord":"Moon"},{"name":"Hora 20","start":"00:38","end":"01:38","startHours":24.63181197203511,"endHours":25.63181197203511,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"01:38","end":"02:38","startHours":25.63181197203511,"endHours":26.63181197203511,"planetary_lord":"Venus"},{"name":"Hora 22","start":"02:38","end":"03:38","startHours":26.63181197203511,"endHours":27.63181197203511,"planetary_lord":"Sun"},{"name":"Hora 23","start":"03:38","end":"04:38","startHours":27.63181197203511,"endHours":28.63181197203511,"planetary_lord":"Mars"},{"name":"Hora 24","start":"04:38","end":"05:38","startHours":28.63181197203511,"endHours":29.63181197203511,"planetary_lord":"Jupiter"}],"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":"North-East","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"tropicalRitu":"Vasanta (Spring)","vedicRitu":"Vasanta (Spring)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":9.651859461377454,"eotMinutes":-0.240124057807095,"ayanamsa":23.4798}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"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 2030 Akṣaya · Śaka 1895 Pramādī"},"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":"surya-walk","name":"Sūrya Walk","name_sanskrit":"सूर्य यात्रा","type":"graha","description":"Self-illumination + BG 4.1 (Sun-lineage of Gītā transmission).","step_count":6,"url":"/walk/surya-walk"},"reason":"Ravivāra (Sunday) — 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 15, 1973 CE · Ayodhyā · Vidhyamitra","description":"April 15, 1973 CE for Ayodhyā: Śukla Trayodaśī, sūryodaya 05:38, sūryāsta 18:25.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1973-04-15","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1973-04-15","sa":"https://sa.vidhyamitra.com/city/ayodhya/1973-04-15","hi":"https://hi.vidhyamitra.com/city/ayodhya/1973-04-15","x-default":"https://vidhyamitra.com/city/ayodhya/1973-04-15"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:52:01.873Z","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":"2026-05-30T23:52:01.873Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:52:01.873Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}