{"id":"vidhyamitra:city-day:erode:1973-09-30:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1973-09-30","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1973-09-30","date_display":"September 30, 1973 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":1973,"month":9,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441955.770833,"kali_year":5075,"ahargana":1853490.2708,"sun":{"sidereal_longitude":162.5683,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":206.1157,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.5474,"elapsed_within_tithi_degrees":7.5474},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":206.1157,"elapsed_within_degrees":6.1157},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":8.684},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"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":1973,"month":9,"day":30,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2441955.770833,"ahargana":1853490.2708,"kali_year":5075,"ayanamsa_lahiri":23.4862,"grahas":{"sun":{"sidereal_longitude":163.25048900000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":1},"retrograde":false},"moon":{"sidereal_longitude":204.799889,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false,"latitude":-3.2922},"mars":{"sidereal_longitude":15.354389000000026,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":2,"name":"Bharaṇī","pada":1},"retrograde":true},"mercury":{"sidereal_longitude":182.78738899999996,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":279.12748899999997,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":true},"venus":{"sidereal_longitude":206.28778899999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":16,"name":"Viśākhā","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":71.228789,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false},"rahu":{"sidereal_longitude":253.1658,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":73.1658,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":1973,"month":9,"day":30,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2441955.770833,"kali_year":5075,"ahargana":1853490.2708,"sun":{"sidereal_longitude":162.5683,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":206.1157,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":43.5474,"elapsed_within_tithi_degrees":7.5474},"nakshatra":{"number":16,"name":"Viśākhā","pada":2,"moon_longitude":206.1157,"elapsed_within_degrees":6.1157},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":8.684},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-3.292,"elongation":43.547},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-3.292,"opposition_distance":136.453}},"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":"06:07","sunsetLocal":"18:10","solarNoonLocal":"12:08","dayLengthHours":12.041833126378277,"dayLengthDisplay":"12 Hours 02 Mins 31 Secs","nightLengthDisplay":"11 Hours 57 Mins 29 Secs","moonriseLocal":"09:06","moonsetLocal":"20:43","rahuKala":{"name":"Rāhu Kāla","start":"16:39","end":"18:10","startHours":16.65379615047543,"endHours":18.159025291272712,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:08","end":"13:39","startHours":12.138108728083573,"endHours":13.64333786888086,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:09","end":"16:39","startHours":15.148567009678143,"endHours":16.65379615047543,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:56","end":"09:20","startHours":8.926953227716034,"endHours":9.328347665261976,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:37","end":"06:56","startHours":6.618935211826863,"endHours":6.940050761863617,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:44","end":"12:32","startHours":11.73671429053763,"endHours":12.539503165629515,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:31","end":"05:19","startHours":4.511614414710665,"endHours":5.31440328980255,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:07","startHours":5.113706071029579,"endHours":6.117192164894435,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:09","end":"14:57","startHours":14.145080915813287,"endHours":14.947869790905171,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:58","end":"18:22","startHours":17.959025291272713,"endHours":18.35902529127271,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:10","end":"18:40","startHours":18.159025291272712,"endHours":18.66076833820514,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:55","end":"19:40","startHours":17.909025291272712,"endHours":19.659025291272712,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:44","end":"00:32","startHours":23.73671429053763,"endHours":24.539503165629515,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:07","end":"07:37","startHours":6.117192164894435,"endHours":7.62242130569172,"quality":"inauspicious"},{"name":"Chala","start":"07:37","end":"09:08","startHours":7.62242130569172,"endHours":9.127650446489005,"quality":"neutral"},{"name":"Labha","start":"09:08","end":"10:38","startHours":9.127650446489005,"endHours":10.63287958728629,"quality":"auspicious"},{"name":"Amṛta","start":"10:38","end":"12:08","startHours":10.63287958728629,"endHours":12.138108728083573,"quality":"auspicious"},{"name":"Kāla","start":"12:08","end":"13:39","startHours":12.138108728083573,"endHours":13.64333786888086,"quality":"inauspicious"},{"name":"Śubha","start":"13:39","end":"15:09","startHours":13.64333786888086,"endHours":15.148567009678143,"quality":"auspicious"},{"name":"Roga","start":"15:09","end":"16:39","startHours":15.148567009678143,"endHours":16.65379615047543,"quality":"inauspicious"},{"name":"Udveg","start":"16:39","end":"18:10","startHours":16.65379615047543,"endHours":18.159025291272712,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:10","end":"19:39","startHours":18.159025291272712,"endHours":19.65379615047543,"quality":"auspicious"},{"name":"Roga","start":"19:39","end":"21:09","startHours":19.65379615047543,"endHours":21.148567009678143,"quality":"inauspicious"},{"name":"Udveg","start":"21:09","end":"22:39","startHours":21.148567009678143,"endHours":22.64333786888086,"quality":"inauspicious"},{"name":"Chala","start":"22:39","end":"00:08","startHours":22.64333786888086,"endHours":24.138108728083573,"quality":"neutral"},{"name":"Labha","start":"00:08","end":"01:38","startHours":24.138108728083573,"endHours":25.63287958728629,"quality":"auspicious"},{"name":"Amṛta","start":"01:38","end":"03:08","startHours":25.63287958728629,"endHours":27.127650446489007,"quality":"auspicious"},{"name":"Kāla","start":"03:08","end":"04:37","startHours":27.127650446489007,"endHours":28.62242130569172,"quality":"inauspicious"},{"name":"Śubha","start":"04:37","end":"06:07","startHours":28.62242130569172,"endHours":30.117192164894433,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.117192164894435,"endHours":7.117192164894435,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.117192164894435,"endHours":8.117192164894435,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.117192164894435,"endHours":9.117192164894435,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.117192164894435,"endHours":10.117192164894435,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.117192164894435,"endHours":11.117192164894435,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.117192164894435,"endHours":12.117192164894435,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.117192164894435,"endHours":13.117192164894435,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.117192164894435,"endHours":14.117192164894435,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.117192164894435,"endHours":15.117192164894435,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.117192164894435,"endHours":16.117192164894433,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.117192164894433,"endHours":17.117192164894433,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.117192164894433,"endHours":18.117192164894433,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.117192164894433,"endHours":19.117192164894433,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.117192164894433,"endHours":20.117192164894433,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.117192164894433,"endHours":21.117192164894433,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.117192164894433,"endHours":22.117192164894433,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.117192164894433,"endHours":23.117192164894433,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.117192164894433,"endHours":24.117192164894433,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.117192164894433,"endHours":25.117192164894433,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.117192164894433,"endHours":26.117192164894433,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.117192164894433,"endHours":27.117192164894433,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.117192164894433,"endHours":28.117192164894433,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.117192164894433,"endHours":29.117192164894433,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.117192164894433,"endHours":30.117192164894433,"planetary_lord":"Jupiter"}],"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","Tulā","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Vṛścika","Makara","Kumbha"]},"dishaShool":"West (Paścim)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Utpāta","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-2.6742014451005094,"eotMinutes":10.844676314985584,"ayanamsa":23.4862}},"calendars":{"vikram_samvat":2030,"vikram_samvatsara":"Akṣaya","saka_samvat":1895,"saka_samvatsara":"Pramādī","bengali_samvat":1380,"malayalam_era":1149,"nanakshahi_year":504,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Caturthī · Vikram 2030 Akṣaya · Śaka 1895 Pramādī"},"festivals":[{"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":"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":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Viśākhā","url":"/day/-0562-04-11","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 September 30, 1973 CE · Erode, Tamil Nadu · Vidhyamitra","description":"September 30, 1973 CE for Erode, Tamil Nadu: Śukla Caturthī, sūryodaya 06:07, sūryāsta 18:10.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1973-09-30","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1973-09-30","sa":"https://sa.vidhyamitra.com/city/erode/1973-09-30","hi":"https://hi.vidhyamitra.com/city/erode/1973-09-30","x-default":"https://vidhyamitra.com/city/erode/1973-09-30"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-30T23:52:22.991Z","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":"2026-05-30T23:52:22.991Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-30T23:52:22.991Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}