{"id":"vidhyamitra:city-day:erode:1961-07-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1961-07-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1961-07-31","date_display":"July 31, 1961 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":1961,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2437511.770833,"kali_year":5063,"ahargana":1849046.2708,"sun":{"sidereal_longitude":103.8428,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":326.4965,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":222.6537,"elapsed_within_tithi_degrees":6.6537},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":326.4965,"elapsed_within_degrees":6.4965},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":70.3394},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"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":1961,"month":7,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2437511.770833,"ahargana":1849046.2708,"kali_year":5063,"ayanamsa_lahiri":23.3163,"grahas":{"sun":{"sidereal_longitude":104.28248300000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"moon":{"sidereal_longitude":329.441783,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":false,"latitude":-1.3793},"mars":{"sidereal_longitude":146.56908299999998,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":89.63878299999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":278.869683,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":63.12238300000001,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":273.033683,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2},"retrograde":true},"rahu":{"sidereal_longitude":128.6303,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":308.6303,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1961,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2437511.770833,"kali_year":5063,"ahargana":1849046.2708,"sun":{"sidereal_longitude":103.8428,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":326.4965,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":222.6537,"elapsed_within_tithi_degrees":6.6537},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":2,"moon_longitude":326.4965,"elapsed_within_degrees":6.4965},"yoga":{"number":6,"name":"Atigaṇḍa","sum_longitude":70.3394},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-1.379,"elongation":137.346},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-1.379,"opposition_distance":42.654}},"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":12.628818716939527,"dayLengthDisplay":"12 Hours 37 Mins 44 Secs","nightLengthDisplay":"11 Hours 22 Mins 16 Secs","moonriseLocal":"21:26","moonsetLocal":"09:26","rahuKala":{"name":"Rāhu Kāla","start":"07:41","end":"09:16","startHours":7.684235889686859,"endHours":9.2628382293043,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:50","end":"12:25","startHours":10.84144056892174,"endHours":12.42004290853918,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"14:00","end":"15:35","startHours":13.998645248156622,"endHours":15.577247587774064,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:28","startHours":9.052357917355307,"endHours":9.473318541253292,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:58","startHours":6.631834329941898,"endHours":6.968602829060286,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:00","end":"12:50","startHours":11.999082284641196,"endHours":12.841003532437165,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:25","end":"05:16","startHours":4.421791054477481,"endHours":5.263712302273449,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:03","end":"06:06","startHours":5.053231990324457,"endHours":6.105633550069418,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:22","startHours":14.524846028029103,"endHours":15.36676727582507,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:32","end":"18:56","startHours":18.534452267008945,"endHours":18.934452267008943,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:44","end":"19:16","startHours":18.734452267008944,"endHours":19.260653046881423,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:29","end":"20:14","startHours":18.484452267008944,"endHours":20.234452267008944,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:00","end":"00:50","startHours":23.999082284641197,"endHours":24.841003532437163,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:06","end":"07:41","startHours":6.105633550069418,"endHours":7.684235889686859,"quality":"auspicious"},{"name":"Kāla","start":"07:41","end":"09:16","startHours":7.684235889686859,"endHours":9.2628382293043,"quality":"inauspicious"},{"name":"Śubha","start":"09:16","end":"10:50","startHours":9.2628382293043,"endHours":10.84144056892174,"quality":"auspicious"},{"name":"Roga","start":"10:50","end":"12:25","startHours":10.84144056892174,"endHours":12.42004290853918,"quality":"inauspicious"},{"name":"Udveg","start":"12:25","end":"14:00","startHours":12.42004290853918,"endHours":13.998645248156622,"quality":"inauspicious"},{"name":"Chala","start":"14:00","end":"15:35","startHours":13.998645248156622,"endHours":15.577247587774064,"quality":"neutral"},{"name":"Labha","start":"15:35","end":"17:09","startHours":15.577247587774064,"endHours":17.155849927391504,"quality":"auspicious"},{"name":"Amṛta","start":"17:09","end":"18:44","startHours":17.155849927391504,"endHours":18.734452267008944,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:44","end":"20:09","startHours":18.734452267008944,"endHours":20.155849927391504,"quality":"neutral"},{"name":"Labha","start":"20:09","end":"21:35","startHours":20.155849927391504,"endHours":21.57724758777406,"quality":"auspicious"},{"name":"Amṛta","start":"21:35","end":"23:00","startHours":21.57724758777406,"endHours":22.99864524815662,"quality":"auspicious"},{"name":"Kāla","start":"23:00","end":"00:25","startHours":22.99864524815662,"endHours":24.42004290853918,"quality":"inauspicious"},{"name":"Śubha","start":"00:25","end":"01:50","startHours":24.42004290853918,"endHours":25.84144056892174,"quality":"auspicious"},{"name":"Roga","start":"01:50","end":"03:16","startHours":25.84144056892174,"endHours":27.2628382293043,"quality":"inauspicious"},{"name":"Udveg","start":"03:16","end":"04:41","startHours":27.2628382293043,"endHours":28.684235889686857,"quality":"inauspicious"},{"name":"Chala","start":"04:41","end":"06:06","startHours":28.684235889686857,"endHours":30.105633550069417,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:06","end":"07:06","startHours":6.105633550069418,"endHours":7.105633550069418,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:06","end":"08:06","startHours":7.105633550069418,"endHours":8.105633550069417,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:06","end":"09:06","startHours":8.105633550069417,"endHours":9.105633550069417,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:06","end":"10:06","startHours":9.105633550069417,"endHours":10.105633550069417,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:06","end":"11:06","startHours":10.105633550069417,"endHours":11.105633550069417,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:06","end":"12:06","startHours":11.105633550069417,"endHours":12.105633550069417,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:06","end":"13:06","startHours":12.105633550069417,"endHours":13.105633550069417,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:06","end":"14:06","startHours":13.105633550069417,"endHours":14.105633550069417,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:06","end":"15:06","startHours":14.105633550069417,"endHours":15.105633550069417,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:06","end":"16:06","startHours":15.105633550069417,"endHours":16.105633550069417,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:06","end":"17:06","startHours":16.105633550069417,"endHours":17.105633550069417,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:06","end":"18:06","startHours":17.105633550069417,"endHours":18.105633550069417,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:06","end":"19:06","startHours":18.105633550069417,"endHours":19.105633550069417,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:06","end":"20:06","startHours":19.105633550069417,"endHours":20.105633550069417,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:06","end":"21:06","startHours":20.105633550069417,"endHours":21.105633550069417,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:06","end":"22:06","startHours":21.105633550069417,"endHours":22.105633550069417,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:06","end":"23:06","startHours":22.105633550069417,"endHours":23.105633550069417,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:06","end":"00:06","startHours":23.105633550069417,"endHours":24.105633550069417,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:06","end":"01:06","startHours":24.105633550069417,"endHours":25.105633550069417,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:06","end":"02:06","startHours":25.105633550069417,"endHours":26.105633550069417,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:06","end":"03:06","startHours":26.105633550069417,"endHours":27.105633550069417,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:06","end":"04:06","startHours":27.105633550069417,"endHours":28.105633550069417,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:06","end":"05:06","startHours":28.105633550069417,"endHours":29.105633550069417,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:06","end":"06:06","startHours":29.105633550069417,"endHours":30.105633550069417,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Ānanda","quality":"Auspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.3683277514904,"eotMinutes":-6.071374512350812,"ayanamsa":23.3163}},"calendars":{"vikram_samvat":2018,"vikram_samvatsara":"Ānanda","saka_samvat":1883,"saka_samvatsara":"Plava","bengali_samvat":1368,"malayalam_era":1137,"nanakshahi_year":492,"lunar_month":"Śrāvaṇa","lunar_month_paksha_full":"Śrāvaṇa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Śrāvaṇa","lunar_month_amanta":"Āṣāḍha","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Karkaṭa (Āḍi)","ritu":"Varṣā (Monsoon)","display_summary":"Śrāvaṇa Kṛṣṇa Caturthī · Vikram 2018 Ānanda · Śaka 1883 Plava"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"todays_walk":{"walk":{"id":"chandra-walk","name":"Candra Walk","name_sanskrit":"चन्द्र यात्रा","type":"graha","description":"Manas-control + BG 6.5-7.","step_count":5,"url":"/walk/chandra-walk"},"reason":"Somavāra (Monday) — 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, 1961 CE · Erode, Tamil Nadu · Vidhyamitra","description":"July 31, 1961 CE for Erode, Tamil Nadu: Kṛṣṇa Caturthī, sūryodaya 06:06, sūryāsta 18:44.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1961-07-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1961-07-31","sa":"https://sa.vidhyamitra.com/city/erode/1961-07-31","hi":"https://hi.vidhyamitra.com/city/erode/1961-07-31","x-default":"https://vidhyamitra.com/city/erode/1961-07-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T22:37:12.688Z","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":"2026-05-30T22:37:12.688Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T22:37:12.688Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}