{"id":"vidhyamitra:city-day:erode:2109-07-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2109-07-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2109-07-31","date_display":"July 31, 2109 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":2109,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2491567.770833,"kali_year":5211,"ahargana":1903102.2708,"sun":{"sidereal_longitude":101.6612,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":140.8727,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":39.2115,"elapsed_within_tithi_degrees":3.2115},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.8727,"elapsed_within_degrees":7.5394},"yoga":{"number":19,"name":"Parigha","sum_longitude":242.5339},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"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":2109,"month":7,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2491567.770833,"ahargana":1903102.2708,"kali_year":5211,"ayanamsa_lahiri":25.3837,"grahas":{"sun":{"sidereal_longitude":102.44564600000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"moon":{"sidereal_longitude":142.19984599999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false,"latitude":-0.2831},"mars":{"sidereal_longitude":83.62644599999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":128.110546,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":99.827246,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":2},"retrograde":false},"venus":{"sidereal_longitude":138.900446,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":280.89934600000004,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":144.4833,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":324.4833,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","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":2109,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2491567.770833,"kali_year":5211,"ahargana":1903102.2708,"sun":{"sidereal_longitude":101.6612,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":140.8727,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":39.2115,"elapsed_within_tithi_degrees":3.2115},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3,"moon_longitude":140.8727,"elapsed_within_degrees":7.5394},"yoga":{"number":19,"name":"Parigha","sum_longitude":242.5339},"karana":{"half_tithi_index":6,"name":"Vaṇija"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-0.283,"elongation":39.211},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-0.283,"opposition_distance":140.789}},"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":"06:06","sunsetLocal":"18:44","solarNoonLocal":"12:25","dayLengthHours":12.627017815200198,"dayLengthDisplay":"12 Hours 37 Mins 37 Secs","nightLengthDisplay":"11 Hours 22 Mins 23 Secs","moonriseLocal":"08:58","moonsetLocal":"21:11","rahuKala":{"name":"Rāhu Kāla","start":"12:25","end":"14:00","startHours":12.42004290853918,"endHours":13.998420135439204,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:41","end":"09:16","startHours":7.684911227839105,"endHours":9.26328845473913,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:50","end":"12:25","startHours":10.841665681639155,"endHours":12.42004290853918,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:28","startHours":9.052838157819128,"endHours":9.473738751659134,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:58","startHours":6.632659743239089,"endHours":6.969380218311095,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:00","end":"12:50","startHours":11.999142314699174,"endHours":12.840943502379186,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:25","end":"05:16","startHours":4.4229316255790545,"endHours":5.264732813259068,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:03","end":"06:06","startHours":5.054282516339065,"endHours":6.106534000939081,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:22","startHours":14.524545877739214,"endHours":15.366347065419228,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:32","end":"18:56","startHours":18.53355181613928,"endHours":18.93355181613928,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:44","end":"19:16","startHours":18.73355181613928,"endHours":19.259677558439286,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:29","end":"20:14","startHours":18.48355181613928,"endHours":20.23355181613928,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:00","end":"00:50","startHours":23.999142314699174,"endHours":24.840943502379186,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"06:06","end":"07:41","startHours":6.106534000939081,"endHours":7.684911227839105,"quality":"auspicious"},{"name":"Amṛta","start":"07:41","end":"09:16","startHours":7.684911227839105,"endHours":9.26328845473913,"quality":"auspicious"},{"name":"Kāla","start":"09:16","end":"10:50","startHours":9.26328845473913,"endHours":10.841665681639155,"quality":"inauspicious"},{"name":"Śubha","start":"10:50","end":"12:25","startHours":10.841665681639155,"endHours":12.42004290853918,"quality":"auspicious"},{"name":"Roga","start":"12:25","end":"14:00","startHours":12.42004290853918,"endHours":13.998420135439204,"quality":"inauspicious"},{"name":"Udveg","start":"14:00","end":"15:35","startHours":13.998420135439204,"endHours":15.576797362339228,"quality":"inauspicious"},{"name":"Chala","start":"15:35","end":"17:09","startHours":15.576797362339228,"endHours":17.155174589239255,"quality":"neutral"},{"name":"Labha","start":"17:09","end":"18:44","startHours":17.155174589239255,"endHours":18.73355181613928,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:44","end":"20:09","startHours":18.73355181613928,"endHours":20.155174589239255,"quality":"inauspicious"},{"name":"Chala","start":"20:09","end":"21:35","startHours":20.155174589239255,"endHours":21.576797362339228,"quality":"neutral"},{"name":"Labha","start":"21:35","end":"23:00","startHours":21.576797362339228,"endHours":22.998420135439204,"quality":"auspicious"},{"name":"Amṛta","start":"23:00","end":"00:25","startHours":22.998420135439204,"endHours":24.42004290853918,"quality":"auspicious"},{"name":"Kāla","start":"00:25","end":"01:50","startHours":24.42004290853918,"endHours":25.841665681639157,"quality":"inauspicious"},{"name":"Śubha","start":"01:50","end":"03:16","startHours":25.841665681639157,"endHours":27.263288454739133,"quality":"auspicious"},{"name":"Roga","start":"03:16","end":"04:41","startHours":27.263288454739133,"endHours":28.684911227839105,"quality":"inauspicious"},{"name":"Udveg","start":"04:41","end":"06:06","startHours":28.684911227839105,"endHours":30.10653400093908,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:06","end":"07:06","startHours":6.106534000939081,"endHours":7.106534000939081,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"07:06","end":"08:06","startHours":7.106534000939081,"endHours":8.106534000939082,"planetary_lord":"Venus"},{"name":"Hora 3","start":"08:06","end":"09:06","startHours":8.106534000939082,"endHours":9.106534000939082,"planetary_lord":"Sun"},{"name":"Hora 4","start":"09:06","end":"10:06","startHours":9.106534000939082,"endHours":10.106534000939082,"planetary_lord":"Mars"},{"name":"Hora 5","start":"10:06","end":"11:06","startHours":10.106534000939082,"endHours":11.106534000939082,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"11:06","end":"12:06","startHours":11.106534000939082,"endHours":12.106534000939082,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"12:06","end":"13:06","startHours":12.106534000939082,"endHours":13.106534000939082,"planetary_lord":"Moon"},{"name":"Hora 8","start":"13:06","end":"14:06","startHours":13.106534000939082,"endHours":14.106534000939082,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"14:06","end":"15:06","startHours":14.106534000939082,"endHours":15.106534000939082,"planetary_lord":"Venus"},{"name":"Hora 10","start":"15:06","end":"16:06","startHours":15.106534000939082,"endHours":16.10653400093908,"planetary_lord":"Sun"},{"name":"Hora 11","start":"16:06","end":"17:06","startHours":16.10653400093908,"endHours":17.10653400093908,"planetary_lord":"Mars"},{"name":"Hora 12","start":"17:06","end":"18:06","startHours":17.10653400093908,"endHours":18.10653400093908,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"18:06","end":"19:06","startHours":18.10653400093908,"endHours":19.10653400093908,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"19:06","end":"20:06","startHours":19.10653400093908,"endHours":20.10653400093908,"planetary_lord":"Moon"},{"name":"Hora 15","start":"20:06","end":"21:06","startHours":20.10653400093908,"endHours":21.10653400093908,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"21:06","end":"22:06","startHours":21.10653400093908,"endHours":22.10653400093908,"planetary_lord":"Venus"},{"name":"Hora 17","start":"22:06","end":"23:06","startHours":22.10653400093908,"endHours":23.10653400093908,"planetary_lord":"Sun"},{"name":"Hora 18","start":"23:06","end":"00:06","startHours":23.10653400093908,"endHours":24.10653400093908,"planetary_lord":"Mars"},{"name":"Hora 19","start":"00:06","end":"01:06","startHours":24.10653400093908,"endHours":25.10653400093908,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"01:06","end":"02:06","startHours":25.10653400093908,"endHours":26.10653400093908,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"02:06","end":"03:06","startHours":26.10653400093908,"endHours":27.10653400093908,"planetary_lord":"Moon"},{"name":"Hora 22","start":"03:06","end":"04:06","startHours":27.10653400093908,"endHours":28.10653400093908,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"04:06","end":"05:06","startHours":28.10653400093908,"endHours":29.10653400093908,"planetary_lord":"Venus"},{"name":"Hora 24","start":"05:06","end":"06:06","startHours":29.10653400093908,"endHours":30.10653400093908,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Uttara Phalgunī","Hasta","Citrā","Svātī","Viśākhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Siṃha","Tulā","Makara","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Kanyā","Vṛścika","Dhanu","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"West","rahuVasa":"South-West","anandadiYoga":{"name":"Gada","quality":"Inauspicious"},"drikRitu":"Varṣā (Monsoon) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":18.309230078367012,"eotMinutes":-6.071374512350812,"ayanamsa":25.3837}},"calendars":{"vikram_samvat":2166,"vikram_samvatsara":"Citrabhānu","saka_samvat":2031,"saka_samvatsara":"Śukla","bengali_samvat":1516,"malayalam_era":1285,"nanakshahi_year":640,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Śukla Pakṣa","solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Śukla Caturthī · Vikram 2166 Citrabhānu · Śaka 2031 Śukla"},"festivals":[{"id":"karka-sankranti","name":"Karka Saṅkrānti (Dakṣiṇāyana)","name_sanskrit":"कर्क सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Cancer; Dakṣiṇāyana (south-going) begins. Devatā-rātri begins.","vrata":true,"detection":{"sun_rashi":"Karka"},"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":"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":"erode"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga July 31, 2109 CE · Erode, Tamil Nadu · Vidhyamitra","description":"July 31, 2109 CE for Erode, Tamil Nadu: Śukla Caturthī, sūryodaya 06:06, sūryāsta 18:44.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2109-07-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2109-07-31","sa":"https://sa.vidhyamitra.com/city/erode/2109-07-31","hi":"https://hi.vidhyamitra.com/city/erode/2109-07-31","x-default":"https://vidhyamitra.com/city/erode/2109-07-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-21T18:18:41.927Z","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":"2026-05-21T18:18:41.927Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-21T18:18:41.927Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}