{"id":"vidhyamitra:city-day:erode:2020-01-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2020-01-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2020-01-31","date_display":"January 31, 2020 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":2020,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458879.770833,"kali_year":5121,"ahargana":1870414.2708,"sun":{"sidereal_longitude":286.4352,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":357.3238,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":70.8886,"elapsed_within_tithi_degrees":10.8886},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":357.3238,"elapsed_within_degrees":10.6572},"yoga":{"number":22,"name":"Sādhya","sum_longitude":283.7591},"karana":{"half_tithi_index":11,"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":2020,"month":1,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2458879.770833,"ahargana":1870414.2708,"kali_year":5121,"ayanamsa_lahiri":24.1335,"grahas":{"sun":{"sidereal_longitude":286.47696799999994,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":2},"retrograde":false},"moon":{"sidereal_longitude":354.145568,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false,"latitude":-4.4191},"mars":{"sidereal_longitude":234.35326799999996,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":299.98386800000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":259.34526800000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":2},"retrograde":false},"venus":{"sidereal_longitude":326.362068,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":270.754368,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":76.4509,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":256.4509,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","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":2020,"month":1,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2458879.770833,"kali_year":5121,"ahargana":1870414.2708,"sun":{"sidereal_longitude":286.4352,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":357.3238,"rashi":12,"rashi_name":"Mīna"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":70.8886,"elapsed_within_tithi_degrees":10.8886},"nakshatra":{"number":27,"name":"Revatī","pada":4,"moon_longitude":357.3238,"elapsed_within_degrees":10.6572},"yoga":{"number":22,"name":"Sādhya","sum_longitude":283.7591},"karana":{"half_tithi_index":11,"name":"Taitila"},"vara":{"number":0,"name":"Śukravāra (Friday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-4.419,"elongation":70.889},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-4.419,"opposition_distance":109.111}},"eclipse_window_40days":[{"offset_days":-20,"type":"lunar","occurs":true,"moon_latitude":0.783,"opposition_distance":1.611}]},"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":"18:22","solarNoonLocal":"12:33","dayLengthHours":11.633399534435512,"dayLengthDisplay":"11 Hours 38 Mins 00 Secs","nightLengthDisplay":"12 Hours 22 Mins 00 Secs","moonriseLocal":"10:55","moonsetLocal":"23:12","rahuKala":{"name":"Rāhu Kāla","start":"11:05","end":"12:33","startHours":11.090171533892928,"endHours":12.544346475697367,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"15:27","end":"16:54","startHours":15.452696359306245,"endHours":16.906871301110684,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:11","end":"09:38","startHours":8.18182165028405,"endHours":9.635996592088489,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:50","startHours":9.442106599847897,"endHours":9.829886584329081,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:13","end":"07:31","startHours":7.212371689081091,"endHours":7.522595676666038,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:09","end":"12:56","startHours":12.156566491216184,"endHours":12.93212646017855,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:11","end":"05:57","startHours":5.176526770554876,"endHours":5.952086739517243,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:45","end":"06:44","startHours":5.758196747276652,"endHours":6.727646708479611,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:29","end":"15:16","startHours":14.483246398103287,"endHours":15.258806367065654,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:10","end":"18:34","startHours":18.161046242915123,"endHours":18.561046242915122,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:22","end":"18:51","startHours":18.361046242915123,"endHours":18.845771223516603,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:07","end":"19:52","startHours":18.111046242915123,"endHours":19.861046242915123,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:09","end":"00:56","startHours":24.156566491216182,"endHours":24.93212646017855,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Chala","start":"06:44","end":"08:11","startHours":6.727646708479611,"endHours":8.18182165028405,"quality":"neutral"},{"name":"Labha","start":"08:11","end":"09:38","startHours":8.18182165028405,"endHours":9.635996592088489,"quality":"auspicious"},{"name":"Amṛta","start":"09:38","end":"11:05","startHours":9.635996592088489,"endHours":11.090171533892928,"quality":"auspicious"},{"name":"Kāla","start":"11:05","end":"12:33","startHours":11.090171533892928,"endHours":12.544346475697367,"quality":"inauspicious"},{"name":"Śubha","start":"12:33","end":"14:00","startHours":12.544346475697367,"endHours":13.998521417501806,"quality":"auspicious"},{"name":"Roga","start":"14:00","end":"15:27","startHours":13.998521417501806,"endHours":15.452696359306245,"quality":"inauspicious"},{"name":"Udveg","start":"15:27","end":"16:54","startHours":15.452696359306245,"endHours":16.906871301110684,"quality":"inauspicious"},{"name":"Chala","start":"16:54","end":"18:22","startHours":16.906871301110684,"endHours":18.361046242915123,"quality":"neutral"}],"nightChoghadiyas":[{"name":"Roga","start":"18:22","end":"19:54","startHours":18.361046242915123,"endHours":19.906871301110684,"quality":"inauspicious"},{"name":"Udveg","start":"19:54","end":"21:27","startHours":19.906871301110684,"endHours":21.452696359306245,"quality":"inauspicious"},{"name":"Chala","start":"21:27","end":"23:00","startHours":21.452696359306245,"endHours":22.998521417501806,"quality":"neutral"},{"name":"Labha","start":"23:00","end":"00:33","startHours":22.998521417501806,"endHours":24.544346475697367,"quality":"auspicious"},{"name":"Amṛta","start":"00:33","end":"02:05","startHours":24.544346475697367,"endHours":26.090171533892928,"quality":"auspicious"},{"name":"Kāla","start":"02:05","end":"03:38","startHours":26.090171533892928,"endHours":27.63599659208849,"quality":"inauspicious"},{"name":"Śubha","start":"03:38","end":"05:11","startHours":27.63599659208849,"endHours":29.18182165028405,"quality":"auspicious"},{"name":"Roga","start":"05:11","end":"06:44","startHours":29.18182165028405,"endHours":30.72764670847961,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:44","end":"07:44","startHours":6.727646708479611,"endHours":7.727646708479611,"planetary_lord":"Venus"},{"name":"Hora 2","start":"07:44","end":"08:44","startHours":7.727646708479611,"endHours":8.727646708479611,"planetary_lord":"Sun"},{"name":"Hora 3","start":"08:44","end":"09:44","startHours":8.727646708479611,"endHours":9.727646708479611,"planetary_lord":"Mars"},{"name":"Hora 4","start":"09:44","end":"10:44","startHours":9.727646708479611,"endHours":10.727646708479611,"planetary_lord":"Jupiter"},{"name":"Hora 5","start":"10:44","end":"11:44","startHours":10.727646708479611,"endHours":11.727646708479611,"planetary_lord":"Saturn"},{"name":"Hora 6","start":"11:44","end":"12:44","startHours":11.727646708479611,"endHours":12.727646708479611,"planetary_lord":"Moon"},{"name":"Hora 7","start":"12:44","end":"13:44","startHours":12.727646708479611,"endHours":13.727646708479611,"planetary_lord":"Mercury"},{"name":"Hora 8","start":"13:44","end":"14:44","startHours":13.727646708479611,"endHours":14.727646708479611,"planetary_lord":"Venus"},{"name":"Hora 9","start":"14:44","end":"15:44","startHours":14.727646708479611,"endHours":15.727646708479611,"planetary_lord":"Sun"},{"name":"Hora 10","start":"15:44","end":"16:44","startHours":15.727646708479611,"endHours":16.72764670847961,"planetary_lord":"Mars"},{"name":"Hora 11","start":"16:44","end":"17:44","startHours":16.72764670847961,"endHours":17.72764670847961,"planetary_lord":"Jupiter"},{"name":"Hora 12","start":"17:44","end":"18:44","startHours":17.72764670847961,"endHours":18.72764670847961,"planetary_lord":"Saturn"},{"name":"Hora 13","start":"18:44","end":"19:44","startHours":18.72764670847961,"endHours":19.72764670847961,"planetary_lord":"Moon"},{"name":"Hora 14","start":"19:44","end":"20:44","startHours":19.72764670847961,"endHours":20.72764670847961,"planetary_lord":"Mercury"},{"name":"Hora 15","start":"20:44","end":"21:44","startHours":20.72764670847961,"endHours":21.72764670847961,"planetary_lord":"Venus"},{"name":"Hora 16","start":"21:44","end":"22:44","startHours":21.72764670847961,"endHours":22.72764670847961,"planetary_lord":"Sun"},{"name":"Hora 17","start":"22:44","end":"23:44","startHours":22.72764670847961,"endHours":23.72764670847961,"planetary_lord":"Mars"},{"name":"Hora 18","start":"23:44","end":"00:44","startHours":23.72764670847961,"endHours":24.72764670847961,"planetary_lord":"Jupiter"},{"name":"Hora 19","start":"00:44","end":"01:44","startHours":24.72764670847961,"endHours":25.72764670847961,"planetary_lord":"Saturn"},{"name":"Hora 20","start":"01:44","end":"02:44","startHours":25.72764670847961,"endHours":26.72764670847961,"planetary_lord":"Moon"},{"name":"Hora 21","start":"02:44","end":"03:44","startHours":26.72764670847961,"endHours":27.72764670847961,"planetary_lord":"Mercury"},{"name":"Hora 22","start":"03:44","end":"04:44","startHours":27.72764670847961,"endHours":28.72764670847961,"planetary_lord":"Venus"},{"name":"Hora 23","start":"04:44","end":"05:44","startHours":28.72764670847961,"endHours":29.72764670847961,"planetary_lord":"Sun"},{"name":"Hora 24","start":"05:44","end":"06:44","startHours":29.72764670847961,"endHours":30.72764670847961,"planetary_lord":"Mars"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Siṃha","Kanyā","Dhanu","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Karka","Tulā","Vṛścika","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-West","rahuVasa":"South-East","anandadiYoga":{"name":"Siddhi","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":-17.5741343877324,"eotMinutes":-13.52958854184206,"ayanamsa":24.1335}},"calendars":{"vikram_samvat":2077,"vikram_samvatsara":"Pramādī","saka_samvat":1942,"saka_samvatsara":"Śārvarī","bengali_samvat":1427,"malayalam_era":1196,"nanakshahi_year":551,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Ṣaṣṭhī · Vikram 2077 Pramādī · Śaka 1942 Śārvarī"},"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}],"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":"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 31, 2020 CE · Erode, Tamil Nadu · Vidhyamitra","description":"January 31, 2020 CE for Erode, Tamil Nadu: Śukla Ṣaṣṭhī, sūryodaya 06:44, sūryāsta 18:22.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2020-01-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2020-01-31","sa":"https://sa.vidhyamitra.com/city/erode/2020-01-31","hi":"https://hi.vidhyamitra.com/city/erode/2020-01-31","x-default":"https://vidhyamitra.com/city/erode/2020-01-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T03:21:27.523Z","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":"2026-05-15T03:21:27.523Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T03:21:27.523Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}