{"id":"vidhyamitra:city-day:ayodhya:1931-02-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/ayodhya/1931-02-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1931-02-18","date_display":"February 18, 1931 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":1931,"month":2,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426390.770833,"kali_year":5032,"ahargana":1837925.2708,"sun":{"sidereal_longitude":305.8093,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":312.5055,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":6.6961,"elapsed_within_tithi_degrees":6.6961},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":312.5055,"elapsed_within_degrees":5.8388},"yoga":{"number":20,"name":"Śiva","sum_longitude":258.3148},"karana":{"half_tithi_index":1,"name":"Bava"},"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":1931,"month":2,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2426390.770833,"ahargana":1837925.2708,"kali_year":5032,"ayanamsa_lahiri":22.8909,"grahas":{"sun":{"sidereal_longitude":305.535487,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":310.80518699999993,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2},"retrograde":false,"latitude":-3.2008},"mars":{"sidereal_longitude":97.72368699999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":true},"mercury":{"sidereal_longitude":287.641387,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":78.71168699999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":260.30558700000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":266.610187,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":357.8744,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":177.8744,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"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":1931,"month":2,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426390.770833,"kali_year":5032,"ahargana":1837925.2708,"sun":{"sidereal_longitude":305.8093,"rashi":11,"rashi_name":"Kumbha"},"moon":{"sidereal_longitude":312.5055,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":1,"name":"Pratipada","paksha":"Śukla","full_name":"Śukla Pratipada","elongation_degrees":6.6961,"elapsed_within_tithi_degrees":6.6961},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":2,"moon_longitude":312.5055,"elapsed_within_degrees":5.8388},"yoga":{"number":20,"name":"Śiva","sum_longitude":258.3148},"karana":{"half_tithi_index":1,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.201,"elongation":6.696},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.201,"opposition_distance":173.304}},"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":"06:36","sunsetLocal":"17:55","solarNoonLocal":"12:16","dayLengthHours":11.304649453788617,"dayLengthDisplay":"11 Hours 18 Mins 17 Secs","nightLengthDisplay":"12 Hours 41 Mins 43 Secs","moonriseLocal":"06:55","moonsetLocal":"18:19","rahuKala":{"name":"Rāhu Kāla","start":"12:16","end":"13:40","startHours":12.260314603540005,"endHours":13.673395785263581,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"08:01","end":"09:26","startHours":8.021071058369273,"endHours":9.43415224009285,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:51","end":"12:16","startHours":10.847233421816428,"endHours":12.260314603540005,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:15","end":"09:37","startHours":9.24574141586304,"endHours":9.62256306432266,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:05","end":"07:23","startHours":7.0790169372202225,"endHours":7.380474255987919,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:38","startHours":11.883492955080385,"endHours":12.637136251999625,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:06","end":"05:51","startHours":5.100703282807214,"endHours":5.854346579726455,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:40","end":"06:36","startHours":5.665935755496645,"endHours":6.607989876645696,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:54","startHours":14.144422845838108,"endHours":14.898066142757349,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:43","end":"18:07","startHours":17.712639330434314,"endHours":18.112639330434313,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:55","end":"18:23","startHours":17.912639330434313,"endHours":18.383666391008838,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:40","end":"19:25","startHours":17.662639330434313,"endHours":19.412639330434313,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:38","startHours":23.88349295508038,"endHours":24.637136251999625,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:36","end":"08:01","startHours":6.607989876645696,"endHours":8.021071058369273,"quality":"auspicious"},{"name":"Amṛta","start":"08:01","end":"09:26","startHours":8.021071058369273,"endHours":9.43415224009285,"quality":"auspicious"},{"name":"Kāla","start":"09:26","end":"10:51","startHours":9.43415224009285,"endHours":10.847233421816428,"quality":"inauspicious"},{"name":"Śubha","start":"10:51","end":"12:16","startHours":10.847233421816428,"endHours":12.260314603540005,"quality":"auspicious"},{"name":"Roga","start":"12:16","end":"13:40","startHours":12.260314603540005,"endHours":13.673395785263581,"quality":"inauspicious"},{"name":"Udveg","start":"13:40","end":"15:05","startHours":13.673395785263581,"endHours":15.08647696698716,"quality":"inauspicious"},{"name":"Chala","start":"15:05","end":"16:30","startHours":15.08647696698716,"endHours":16.499558148710737,"quality":"neutral"},{"name":"Labha","start":"16:30","end":"17:55","startHours":16.499558148710737,"endHours":17.912639330434313,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"17:55","end":"19:30","startHours":17.912639330434313,"endHours":19.499558148710737,"quality":"inauspicious"},{"name":"Chala","start":"19:30","end":"21:05","startHours":19.499558148710737,"endHours":21.08647696698716,"quality":"neutral"},{"name":"Labha","start":"21:05","end":"22:40","startHours":21.08647696698716,"endHours":22.67339578526358,"quality":"auspicious"},{"name":"Amṛta","start":"22:40","end":"00:16","startHours":22.67339578526358,"endHours":24.260314603540003,"quality":"auspicious"},{"name":"Kāla","start":"00:16","end":"01:51","startHours":24.260314603540003,"endHours":25.847233421816426,"quality":"inauspicious"},{"name":"Śubha","start":"01:51","end":"03:26","startHours":25.847233421816426,"endHours":27.43415224009285,"quality":"auspicious"},{"name":"Roga","start":"03:26","end":"05:01","startHours":27.43415224009285,"endHours":29.021071058369273,"quality":"inauspicious"},{"name":"Udveg","start":"05:01","end":"06:36","startHours":29.021071058369273,"endHours":30.607989876645696,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:36","end":"07:36","startHours":6.607989876645696,"endHours":7.607989876645696,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:36","end":"08:36","startHours":7.607989876645696,"endHours":8.607989876645696,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:36","end":"09:36","startHours":8.607989876645696,"endHours":9.607989876645696,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:36","end":"10:36","startHours":9.607989876645696,"endHours":10.607989876645696,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:36","end":"11:36","startHours":10.607989876645696,"endHours":11.607989876645696,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:36","end":"12:36","startHours":11.607989876645696,"endHours":12.607989876645696,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:36","end":"13:36","startHours":12.607989876645696,"endHours":13.607989876645696,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:36","end":"14:36","startHours":13.607989876645696,"endHours":14.607989876645696,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:36","end":"15:36","startHours":14.607989876645696,"endHours":15.607989876645696,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:36","end":"16:36","startHours":15.607989876645696,"endHours":16.607989876645696,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:36","end":"17:36","startHours":16.607989876645696,"endHours":17.607989876645696,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:36","end":"18:36","startHours":17.607989876645696,"endHours":18.607989876645696,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:36","end":"19:36","startHours":18.607989876645696,"endHours":19.607989876645696,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:36","end":"20:36","startHours":19.607989876645696,"endHours":20.607989876645696,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:36","end":"21:36","startHours":20.607989876645696,"endHours":21.607989876645696,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:36","end":"22:36","startHours":21.607989876645696,"endHours":22.607989876645696,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:36","end":"23:36","startHours":22.607989876645696,"endHours":23.607989876645696,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:36","end":"00:36","startHours":23.607989876645696,"endHours":24.607989876645696,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:36","end":"01:36","startHours":24.607989876645696,"endHours":25.607989876645696,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:36","end":"02:36","startHours":25.607989876645696,"endHours":26.607989876645696,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:36","end":"03:36","startHours":26.607989876645696,"endHours":27.607989876645696,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:36","end":"04:36","startHours":27.607989876645696,"endHours":28.607989876645696,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:36","end":"05:36","startHours":28.607989876645696,"endHours":29.607989876645696,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:36","end":"06:36","startHours":29.607989876645696,"endHours":30.607989876645696,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"South-West","anandadiYoga":{"name":"Śrīvatsa","quality":"Auspicious"},"tropicalRitu":"Śiśira (Winter)","vedicRitu":"Śiśira (Winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-12.019827396403338,"eotMinutes":-14.434876212400278,"ayanamsa":22.8909}},"calendars":{"vikram_samvat":1988,"vikram_samvatsara":"Tāraṇa","saka_samvat":1853,"saka_samvatsara":"Prajāpati","bengali_samvat":1338,"malayalam_era":1107,"nanakshahi_year":462,"lunar_month":"Phālguna","lunar_month_paksha_full":"Phālguna Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Phālguna","lunar_month_amanta":"Phālguna","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kumbha (Māsi)","ritu":"Śiśira (Winter)","display_summary":"Phālguna Śukla Pratipada · Vikram 1988 Tāraṇa · Śaka 1853 Prajāpati"},"festivals":[],"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 February 18, 1931 CE · Ayodhyā · Vidhyamitra","description":"February 18, 1931 CE for Ayodhyā: Śukla Pratipada, sūryodaya 06:36, sūryāsta 17:55.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/ayodhya/1931-02-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/ayodhya/1931-02-18","sa":"https://sa.vidhyamitra.com/city/ayodhya/1931-02-18","hi":"https://hi.vidhyamitra.com/city/ayodhya/1931-02-18","x-default":"https://vidhyamitra.com/city/ayodhya/1931-02-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T19:53:06.809Z","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":"2026-05-31T19:53:06.809Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T19:53:06.809Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}