{"id":"vidhyamitra:city-day:erode:1997-07-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1997-07-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1997-07-13","date_display":"July 13, 1997 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":1997,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450642.770833,"kali_year":5099,"ahargana":1862177.2708,"sun":{"sidereal_longitude":86.4715,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":180.783,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":94.3116,"elapsed_within_tithi_degrees":10.3116},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":180.783,"elapsed_within_degrees":7.4497},"yoga":{"number":21,"name":"Siddha","sum_longitude":267.2545},"karana":{"half_tithi_index":15,"name":"Bava"},"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":1997,"month":7,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450642.770833,"ahargana":1862177.2708,"kali_year":5099,"ayanamsa_lahiri":23.8185,"grahas":{"sun":{"sidereal_longitude":86.882382,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"moon":{"sidereal_longitude":178.374282,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false,"latitude":2.1037},"mars":{"sidereal_longitude":167.67428199999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":105.01338199999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":296.47588199999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1},"retrograde":true},"venus":{"sidereal_longitude":113.526682,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":356.181682,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":152.8868,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":332.8868,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":4},"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":1997,"month":7,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450642.770833,"kali_year":5099,"ahargana":1862177.2708,"sun":{"sidereal_longitude":86.4715,"rashi":3,"rashi_name":"Mithuna"},"moon":{"sidereal_longitude":180.783,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":94.3116,"elapsed_within_tithi_degrees":10.3116},"nakshatra":{"number":14,"name":"Citrā","pada":3,"moon_longitude":180.783,"elapsed_within_degrees":7.4497},"yoga":{"number":21,"name":"Siddha","sum_longitude":267.2545},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.104,"elongation":94.312},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.104,"opposition_distance":85.688}},"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":"06:02","sunsetLocal":"18:47","solarNoonLocal":"12:24","dayLengthHours":12.73732880376439,"dayLengthDisplay":"12 Hours 44 Mins 14 Secs","nightLengthDisplay":"11 Hours 15 Mins 46 Secs","moonriseLocal":"12:35","moonsetLocal":"00:26","rahuKala":{"name":"Rāhu Kāla","start":"17:11","end":"18:47","startHours":17.18470878218099,"endHours":18.77687488265154,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:24","end":"14:00","startHours":12.408210480769345,"endHours":14.000376581239895,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:36","end":"17:11","startHours":15.592542681710443,"endHours":17.18470878218099,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:01","end":"09:26","startHours":9.011589466432175,"endHours":9.436167093224322,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:34","end":"06:55","startHours":6.570268112377334,"endHours":6.909930213811051,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:50","startHours":11.983632853977198,"endHours":12.832788107561491,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:20","end":"05:11","startHours":4.341235571718565,"endHours":5.190390825302858,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:59","end":"06:02","startHours":4.978102011906785,"endHours":6.039546078887151,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:32","end":"15:23","startHours":14.531098614730077,"endHours":15.38025386831437,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:35","end":"18:59","startHours":18.57687488265154,"endHours":18.97687488265154,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:47","end":"19:18","startHours":18.77687488265154,"endHours":19.307596916141723,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:32","end":"20:17","startHours":18.52687488265154,"endHours":20.27687488265154,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:50","startHours":23.9836328539772,"endHours":24.83278810756149,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:02","end":"07:38","startHours":6.039546078887151,"endHours":7.6317121793577,"quality":"inauspicious"},{"name":"Chala","start":"07:38","end":"09:13","startHours":7.6317121793577,"endHours":9.223878279828249,"quality":"neutral"},{"name":"Labha","start":"09:13","end":"10:49","startHours":9.223878279828249,"endHours":10.816044380298797,"quality":"auspicious"},{"name":"Amṛta","start":"10:49","end":"12:24","startHours":10.816044380298797,"endHours":12.408210480769345,"quality":"auspicious"},{"name":"Kāla","start":"12:24","end":"14:00","startHours":12.408210480769345,"endHours":14.000376581239895,"quality":"inauspicious"},{"name":"Śubha","start":"14:00","end":"15:36","startHours":14.000376581239895,"endHours":15.592542681710443,"quality":"auspicious"},{"name":"Roga","start":"15:36","end":"17:11","startHours":15.592542681710443,"endHours":17.18470878218099,"quality":"inauspicious"},{"name":"Udveg","start":"17:11","end":"18:47","startHours":17.18470878218099,"endHours":18.77687488265154,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:47","end":"20:11","startHours":18.77687488265154,"endHours":20.18470878218099,"quality":"auspicious"},{"name":"Roga","start":"20:11","end":"21:36","startHours":20.18470878218099,"endHours":21.592542681710444,"quality":"inauspicious"},{"name":"Udveg","start":"21:36","end":"23:00","startHours":21.592542681710444,"endHours":23.000376581239895,"quality":"inauspicious"},{"name":"Chala","start":"23:00","end":"00:24","startHours":23.000376581239895,"endHours":24.408210480769345,"quality":"neutral"},{"name":"Labha","start":"00:24","end":"01:49","startHours":24.408210480769345,"endHours":25.8160443802988,"quality":"auspicious"},{"name":"Amṛta","start":"01:49","end":"03:13","startHours":25.8160443802988,"endHours":27.22387827982825,"quality":"auspicious"},{"name":"Kāla","start":"03:13","end":"04:38","startHours":27.22387827982825,"endHours":28.6317121793577,"quality":"inauspicious"},{"name":"Śubha","start":"04:38","end":"06:02","startHours":28.6317121793577,"endHours":30.03954607888715,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:02","end":"07:02","startHours":6.039546078887151,"endHours":7.039546078887151,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:02","end":"08:02","startHours":7.039546078887151,"endHours":8.03954607888715,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:02","end":"09:02","startHours":8.03954607888715,"endHours":9.03954607888715,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:02","end":"10:02","startHours":9.03954607888715,"endHours":10.03954607888715,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:02","end":"11:02","startHours":10.03954607888715,"endHours":11.03954607888715,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:02","end":"12:02","startHours":11.03954607888715,"endHours":12.03954607888715,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:02","end":"13:02","startHours":12.03954607888715,"endHours":13.03954607888715,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:02","end":"14:02","startHours":13.03954607888715,"endHours":14.03954607888715,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:02","end":"15:02","startHours":14.03954607888715,"endHours":15.03954607888715,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:02","end":"16:02","startHours":15.03954607888715,"endHours":16.03954607888715,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:02","end":"17:02","startHours":16.03954607888715,"endHours":17.03954607888715,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:02","end":"18:02","startHours":17.03954607888715,"endHours":18.03954607888715,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:02","end":"19:02","startHours":18.03954607888715,"endHours":19.03954607888715,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:02","end":"20:02","startHours":19.03954607888715,"endHours":20.03954607888715,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:02","end":"21:02","startHours":20.03954607888715,"endHours":21.03954607888715,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:02","end":"22:02","startHours":21.03954607888715,"endHours":22.03954607888715,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:02","end":"23:02","startHours":22.03954607888715,"endHours":23.03954607888715,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:02","end":"00:02","startHours":23.03954607888715,"endHours":24.03954607888715,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:02","end":"01:02","startHours":24.03954607888715,"endHours":25.03954607888715,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:02","end":"02:02","startHours":25.03954607888715,"endHours":26.03954607888715,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:02","end":"03:02","startHours":26.03954607888715,"endHours":27.03954607888715,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:02","end":"04:02","startHours":27.03954607888715,"endHours":28.03954607888715,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:02","end":"05:02","startHours":28.03954607888715,"endHours":29.03954607888715,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:02","end":"06:02","startHours":29.03954607888715,"endHours":30.03954607888715,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"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":"Padma","quality":"Auspicious"},"drikRitu":"Grīṣma (Summer) (Drik)","vedicRitu":"Grīṣma (Summer)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":21.842366723925675,"eotMinutes":-5.361428846160681,"ayanamsa":23.8185}},"calendars":{"vikram_samvat":2054,"vikram_samvatsara":"Vikṛti","saka_samvat":1919,"saka_samvatsara":"Īśvara","bengali_samvat":1404,"malayalam_era":1173,"nanakshahi_year":528,"lunar_month":"Āṣāḍha","lunar_month_paksha_full":"Āṣāḍha Śukla Pakṣa","solar_month":"Mithuna (Āni)","ritu":"Grīṣma (Summer)","display_summary":"Āṣāḍha Śukla Aṣṭamī · Vikram 2054 Vikṛti · Śaka 1919 Īśvara"},"festivals":[{"id":"mithuna-sankranti","name":"Mithuna Saṅkrānti","name_sanskrit":"मिथुन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Gemini.","vrata":false,"detection":{"sun_rashi":"Mithuna"},"precedence":5}],"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":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"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 13, 1997 CE · Erode, Tamil Nadu · Vidhyamitra","description":"July 13, 1997 CE for Erode, Tamil Nadu: Śukla Aṣṭamī, sūryodaya 06:02, sūryāsta 18:47.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1997-07-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1997-07-13","sa":"https://sa.vidhyamitra.com/city/erode/1997-07-13","hi":"https://hi.vidhyamitra.com/city/erode/1997-07-13","x-default":"https://vidhyamitra.com/city/erode/1997-07-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T01:35:47.558Z","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":"2026-05-17T01:35:47.558Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T01:35:47.558Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}