{"id":"vidhyamitra:city-day:erode:1977-07-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1977-07-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1977-07-31","date_display":"July 31, 1977 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":1977,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443355.770833,"kali_year":5079,"ahargana":1854890.2708,"sun":{"sidereal_longitude":103.7097,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":292.8292,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":189.1195,"elapsed_within_tithi_degrees":9.1195},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":292.8292,"elapsed_within_degrees":12.8292},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":36.5389},"karana":{"half_tithi_index":31,"name":"Kaulava"},"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":1977,"month":7,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2443355.770833,"ahargana":1854890.2708,"kali_year":5079,"ayanamsa_lahiri":23.5398,"grahas":{"sun":{"sidereal_longitude":104.18709899999999,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":false},"moon":{"sidereal_longitude":291.99579900000003,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false,"latitude":4.1153},"mars":{"sidereal_longitude":46.01249899999999,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":130.308699,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":62.48429900000002,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":63.61239899999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":115.09099900000001,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":178.9871,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":358.9871,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","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":1977,"month":7,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2443355.770833,"kali_year":5079,"ahargana":1854890.2708,"sun":{"sidereal_longitude":103.7097,"rashi":4,"rashi_name":"Karka"},"moon":{"sidereal_longitude":292.8292,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":16,"name":"Pratipada","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Pratipada","elongation_degrees":189.1195,"elapsed_within_tithi_degrees":9.1195},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4,"moon_longitude":292.8292,"elapsed_within_degrees":12.8292},"yoga":{"number":3,"name":"Āyuṣmān","sum_longitude":36.5389},"karana":{"half_tithi_index":31,"name":"Kaulava"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.115,"elongation":170.88},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.115,"opposition_distance":9.12}},"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":12.627818925984478,"dayLengthDisplay":"12 Hours 37 Mins 40 Secs","nightLengthDisplay":"11 Hours 22 Mins 20 Secs","moonriseLocal":"19:07","moonsetLocal":"06:46","rahuKala":{"name":"Rāhu Kāla","start":"17:09","end":"18:44","startHours":17.15547500578336,"endHours":18.73395237153142,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:25","end":"14:00","startHours":12.42004290853918,"endHours":13.998520274287241,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:35","end":"17:09","startHours":15.576997640035302,"endHours":17.15547500578336,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:03","end":"09:28","startHours":9.052624528276654,"endHours":9.47355182580947,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:58","startHours":6.6322925674629625,"endHours":6.969034405489215,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:00","end":"12:50","startHours":11.999115611006365,"endHours":12.840970206071995,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:25","end":"05:16","startHours":4.422424255415678,"endHours":5.26427885048131,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:03","end":"06:06","startHours":5.053815201714903,"endHours":6.106133445546942,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:31","end":"15:22","startHours":14.524679396203261,"endHours":15.366533991268893,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:32","end":"18:56","startHours":18.53395237153142,"endHours":18.93395237153142,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:44","end":"19:16","startHours":18.73395237153142,"endHours":19.26011149344744,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:29","end":"20:14","startHours":18.48395237153142,"endHours":20.23395237153142,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:00","end":"00:50","startHours":23.999115611006363,"endHours":24.840970206071997,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:06","end":"07:41","startHours":6.106133445546942,"endHours":7.684610811295002,"quality":"inauspicious"},{"name":"Chala","start":"07:41","end":"09:16","startHours":7.684610811295002,"endHours":9.263088177043063,"quality":"neutral"},{"name":"Labha","start":"09:16","end":"10:50","startHours":9.263088177043063,"endHours":10.841565542791122,"quality":"auspicious"},{"name":"Amṛta","start":"10:50","end":"12:25","startHours":10.841565542791122,"endHours":12.42004290853918,"quality":"auspicious"},{"name":"Kāla","start":"12:25","end":"14:00","startHours":12.42004290853918,"endHours":13.998520274287241,"quality":"inauspicious"},{"name":"Śubha","start":"14:00","end":"15:35","startHours":13.998520274287241,"endHours":15.576997640035302,"quality":"auspicious"},{"name":"Roga","start":"15:35","end":"17:09","startHours":15.576997640035302,"endHours":17.15547500578336,"quality":"inauspicious"},{"name":"Udveg","start":"17:09","end":"18:44","startHours":17.15547500578336,"endHours":18.73395237153142,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:44","end":"20:09","startHours":18.73395237153142,"endHours":20.15547500578336,"quality":"auspicious"},{"name":"Roga","start":"20:09","end":"21:35","startHours":20.15547500578336,"endHours":21.5769976400353,"quality":"inauspicious"},{"name":"Udveg","start":"21:35","end":"23:00","startHours":21.5769976400353,"endHours":22.99852027428724,"quality":"inauspicious"},{"name":"Chala","start":"23:00","end":"00:25","startHours":22.99852027428724,"endHours":24.42004290853918,"quality":"neutral"},{"name":"Labha","start":"00:25","end":"01:50","startHours":24.42004290853918,"endHours":25.84156554279112,"quality":"auspicious"},{"name":"Amṛta","start":"01:50","end":"03:16","startHours":25.84156554279112,"endHours":27.26308817704306,"quality":"auspicious"},{"name":"Kāla","start":"03:16","end":"04:41","startHours":27.26308817704306,"endHours":28.684610811295002,"quality":"inauspicious"},{"name":"Śubha","start":"04:41","end":"06:06","startHours":28.684610811295002,"endHours":30.10613344554694,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:06","end":"07:06","startHours":6.106133445546942,"endHours":7.106133445546942,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:06","end":"08:06","startHours":7.106133445546942,"endHours":8.106133445546941,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:06","end":"09:06","startHours":8.106133445546941,"endHours":9.106133445546941,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:06","end":"10:06","startHours":9.106133445546941,"endHours":10.106133445546941,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:06","end":"11:06","startHours":10.106133445546941,"endHours":11.106133445546941,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:06","end":"12:06","startHours":11.106133445546941,"endHours":12.106133445546941,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:06","end":"13:06","startHours":12.106133445546941,"endHours":13.106133445546941,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:06","end":"14:06","startHours":13.106133445546941,"endHours":14.106133445546941,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:06","end":"15:06","startHours":14.106133445546941,"endHours":15.106133445546941,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:06","end":"16:06","startHours":15.106133445546941,"endHours":16.10613344554694,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:06","end":"17:06","startHours":16.10613344554694,"endHours":17.10613344554694,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:06","end":"18:06","startHours":17.10613344554694,"endHours":18.10613344554694,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:06","end":"19:06","startHours":18.10613344554694,"endHours":19.10613344554694,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:06","end":"20:06","startHours":19.10613344554694,"endHours":20.10613344554694,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:06","end":"21:06","startHours":20.10613344554694,"endHours":21.10613344554694,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:06","end":"22:06","startHours":21.10613344554694,"endHours":22.10613344554694,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:06","end":"23:06","startHours":22.10613344554694,"endHours":23.10613344554694,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:06","end":"00:06","startHours":23.10613344554694,"endHours":24.10613344554694,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:06","end":"01:06","startHours":24.10613344554694,"endHours":25.10613344554694,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:06","end":"02:06","startHours":25.10613344554694,"endHours":26.10613344554694,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:06","end":"03:06","startHours":26.10613344554694,"endHours":27.10613344554694,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:06","end":"04:06","startHours":27.10613344554694,"endHours":28.10613344554694,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:06","end":"05:06","startHours":28.10613344554694,"endHours":29.10613344554694,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:06","end":"06:06","startHours":29.10613344554694,"endHours":30.10613344554694,"planetary_lord":"Jupiter"}],"taraBala":{"favorable_nakshatras":["Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Citrā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"South-East","rahuVasa":"North-East","anandadiYoga":{"name":"Mausala","quality":"Inauspicious"},"tropicalRitu":"Varṣā (Monsoon) (tropical)","vedicRitu":"Grīṣma (Summer)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":18.33552465785154,"eotMinutes":-6.071374512350812,"ayanamsa":23.5398}},"calendars":{"vikram_samvat":2034,"vikram_samvatsara":"Pramoda","saka_samvat":1899,"saka_samvatsara":"Piṅgala","bengali_samvat":1384,"malayalam_era":1153,"nanakshahi_year":508,"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 Pratipada · Vikram 2034 Pramoda · Śaka 1899 Piṅgala"},"festivals":[],"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":[]},"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, 1977 CE · Erode, Tamil Nadu · Vidhyamitra","description":"July 31, 1977 CE for Erode, Tamil Nadu: Kṛṣṇa Pratipada, sūryodaya 06:06, sūryāsta 18:44.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1977-07-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1977-07-31","sa":"https://sa.vidhyamitra.com/city/erode/1977-07-31","hi":"https://hi.vidhyamitra.com/city/erode/1977-07-31","x-default":"https://vidhyamitra.com/city/erode/1977-07-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T02:26:31.960Z","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":"2026-05-31T02:26:31.960Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T02:26:31.960Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}