{"id":"vidhyamitra:city-day:erode:1931-01-22:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1931-01-22","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1931-01-22","date_display":"January 22, 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":1,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426363.770833,"kali_year":5032,"ahargana":1837898.2708,"sun":{"sidereal_longitude":278.2745,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":317.2545,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.9799,"elapsed_within_tithi_degrees":2.9799},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":317.2545,"elapsed_within_degrees":10.5878},"yoga":{"number":18,"name":"Varīyān","sum_longitude":235.529},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":1,"day":22,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2426363.770833,"ahargana":1837898.2708,"kali_year":5032,"ayanamsa_lahiri":22.8899,"grahas":{"sun":{"sidereal_longitude":278.167518,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":314.0312180000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false,"latitude":-3.0123},"mars":{"sidereal_longitude":107.27481799999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":255.50091799999996,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":81.234218,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"venus":{"sidereal_longitude":232.69651799999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":263.657418,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":359.305,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":179.305,"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":1,"day":22,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2426363.770833,"kali_year":5032,"ahargana":1837898.2708,"sun":{"sidereal_longitude":278.2745,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":317.2545,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":38.9799,"elapsed_within_tithi_degrees":2.9799},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":4,"moon_longitude":317.2545,"elapsed_within_degrees":10.5878},"yoga":{"number":18,"name":"Varīyān","sum_longitude":235.529},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.012,"elongation":38.98},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.012,"opposition_distance":141.02}},"eclipse_window_40days":[]},"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:44","sunsetLocal":"18:18","solarNoonLocal":"12:31","dayLengthHours":11.564977801805725,"dayLengthDisplay":"11 Hours 33 Mins 54 Secs","nightLengthDisplay":"12 Hours 26 Mins 06 Secs","moonriseLocal":"08:59","moonsetLocal":"20:49","rahuKala":{"name":"Rāhu Kāla","start":"13:57","end":"15:24","startHours":13.95674394703137,"endHours":15.402366172257086,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:44","end":"08:10","startHours":6.728632820902791,"endHours":8.174255046128508,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:37","end":"11:04","startHours":9.619877271354223,"endHours":11.065499496579939,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:26","end":"09:49","startHours":9.427127641324127,"endHours":9.812626901384318,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:13","end":"07:31","startHours":7.21050689597803,"endHours":7.518906304026183,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:08","end":"12:54","startHours":12.125622461745463,"endHours":12.896620981865846,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:11","end":"05:57","startHours":5.186635780662028,"endHours":5.957634300782409,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:46","end":"06:44","startHours":5.7648846707523145,"endHours":6.728632820902791,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:13","startHours":14.438618022106606,"endHours":15.209616542226987,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:06","end":"18:30","startHours":18.093610622708518,"endHours":18.493610622708516,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:18","end":"18:47","startHours":18.293610622708517,"endHours":18.775484697783757,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:03","end":"19:48","startHours":18.043610622708517,"endHours":19.793610622708517,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:08","end":"00:54","startHours":24.125622461745465,"endHours":24.896620981865844,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:44","end":"08:10","startHours":6.728632820902791,"endHours":8.174255046128508,"quality":"auspicious"},{"name":"Roga","start":"08:10","end":"09:37","startHours":8.174255046128508,"endHours":9.619877271354223,"quality":"inauspicious"},{"name":"Udveg","start":"09:37","end":"11:04","startHours":9.619877271354223,"endHours":11.065499496579939,"quality":"inauspicious"},{"name":"Chala","start":"11:04","end":"12:31","startHours":11.065499496579939,"endHours":12.511121721805655,"quality":"neutral"},{"name":"Labha","start":"12:31","end":"13:57","startHours":12.511121721805655,"endHours":13.95674394703137,"quality":"auspicious"},{"name":"Amṛta","start":"13:57","end":"15:24","startHours":13.95674394703137,"endHours":15.402366172257086,"quality":"auspicious"},{"name":"Kāla","start":"15:24","end":"16:51","startHours":15.402366172257086,"endHours":16.8479883974828,"quality":"inauspicious"},{"name":"Śubha","start":"16:51","end":"18:18","startHours":16.8479883974828,"endHours":18.293610622708517,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:18","end":"19:51","startHours":18.293610622708517,"endHours":19.8479883974828,"quality":"auspicious"},{"name":"Kāla","start":"19:51","end":"21:24","startHours":19.8479883974828,"endHours":21.402366172257086,"quality":"inauspicious"},{"name":"Śubha","start":"21:24","end":"22:57","startHours":21.402366172257086,"endHours":22.95674394703137,"quality":"auspicious"},{"name":"Roga","start":"22:57","end":"00:31","startHours":22.95674394703137,"endHours":24.511121721805655,"quality":"inauspicious"},{"name":"Udveg","start":"00:31","end":"02:04","startHours":24.511121721805655,"endHours":26.06549949657994,"quality":"inauspicious"},{"name":"Chala","start":"02:04","end":"03:37","startHours":26.06549949657994,"endHours":27.619877271354223,"quality":"neutral"},{"name":"Labha","start":"03:37","end":"05:10","startHours":27.619877271354223,"endHours":29.174255046128508,"quality":"auspicious"},{"name":"Amṛta","start":"05:10","end":"06:44","startHours":29.174255046128508,"endHours":30.728632820902792,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:44","end":"07:44","startHours":6.728632820902791,"endHours":7.728632820902791,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:44","end":"08:44","startHours":7.728632820902791,"endHours":8.728632820902792,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:44","end":"09:44","startHours":8.728632820902792,"endHours":9.728632820902792,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:44","end":"10:44","startHours":9.728632820902792,"endHours":10.728632820902792,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:44","end":"11:44","startHours":10.728632820902792,"endHours":11.728632820902792,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:44","end":"12:44","startHours":11.728632820902792,"endHours":12.728632820902792,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:44","end":"13:44","startHours":12.728632820902792,"endHours":13.728632820902792,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:44","end":"14:44","startHours":13.728632820902792,"endHours":14.728632820902792,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:44","end":"15:44","startHours":14.728632820902792,"endHours":15.728632820902792,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:44","end":"16:44","startHours":15.728632820902792,"endHours":16.728632820902792,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:44","end":"17:44","startHours":16.728632820902792,"endHours":17.728632820902792,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:44","end":"18:44","startHours":17.728632820902792,"endHours":18.728632820902792,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:44","end":"19:44","startHours":18.728632820902792,"endHours":19.728632820902792,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:44","end":"20:44","startHours":19.728632820902792,"endHours":20.728632820902792,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:44","end":"21:44","startHours":20.728632820902792,"endHours":21.728632820902792,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:44","end":"22:44","startHours":21.728632820902792,"endHours":22.728632820902792,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:44","end":"23:44","startHours":22.728632820902792,"endHours":23.728632820902792,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:44","end":"00:44","startHours":23.728632820902792,"endHours":24.728632820902792,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:44","end":"01:44","startHours":24.728632820902792,"endHours":25.728632820902792,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:44","end":"02:44","startHours":25.728632820902792,"endHours":26.728632820902792,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:44","end":"03:44","startHours":26.728632820902792,"endHours":27.728632820902792,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:44","end":"04:44","startHours":27.728632820902792,"endHours":28.728632820902792,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:44","end":"05:44","startHours":28.728632820902792,"endHours":29.728632820902792,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:44","end":"06:44","startHours":29.728632820902792,"endHours":30.728632820902792,"planetary_lord":"Moon"}],"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":"South (Dakṣiṇa)","chandraVasa":"South","rahuVasa":"North-West","anandadiYoga":{"name":"Maitra","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-19.92061263323441,"eotMinutes":-11.536103308339323,"ayanamsa":22.8899}},"calendars":{"vikram_samvat":1988,"vikram_samvatsara":"Tāraṇa","saka_samvat":1853,"saka_samvatsara":"Prajāpati","bengali_samvat":1338,"malayalam_era":1107,"nanakshahi_year":462,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Caturthī · Vikram 1988 Tāraṇa · Śaka 1853 Prajāpati"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2},{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"erode"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 22, 1931 CE · Erode, Tamil Nadu · Vidhyamitra","description":"January 22, 1931 CE for Erode, Tamil Nadu: Śukla Caturthī, sūryodaya 06:44, sūryāsta 18:18.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1931-01-22","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1931-01-22","sa":"https://sa.vidhyamitra.com/city/erode/1931-01-22","hi":"https://hi.vidhyamitra.com/city/erode/1931-01-22","x-default":"https://vidhyamitra.com/city/erode/1931-01-22"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T13:17:27.947Z","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":"2026-05-22T13:17:27.947Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T13:17:27.947Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}