{"id":"vidhyamitra:city-day:erode:1998-09-20:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1998-09-20","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-09-20","date_display":"September 20, 1998 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":1998,"month":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451076.770833,"kali_year":5100,"ahargana":1862611.2708,"sun":{"sidereal_longitude":152.3204,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":145.9622,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":353.6419,"elapsed_within_tithi_degrees":5.6419},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":145.9622,"elapsed_within_degrees":12.6289},"yoga":{"number":23,"name":"Śubha","sum_longitude":298.2826},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"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":1998,"month":9,"day":20,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2451076.770833,"ahargana":1862611.2708,"kali_year":5100,"ayanamsa_lahiri":23.8351,"grahas":{"sun":{"sidereal_longitude":153.05320000000006,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":2},"retrograde":false},"moon":{"sidereal_longitude":145.5928,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4},"retrograde":false,"latitude":1.2445},"mars":{"sidereal_longitude":115.37779999999998,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":148.0784,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":1},"retrograde":false},"jupiter":{"sidereal_longitude":328.70180000000005,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":true},"venus":{"sidereal_longitude":142.6316,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":8.682999999999993,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":129.8914,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":309.8914,"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":1998,"month":9,"day":20,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2451076.770833,"kali_year":5100,"ahargana":1862611.2708,"sun":{"sidereal_longitude":152.3204,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":145.9622,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":353.6419,"elapsed_within_tithi_degrees":5.6419},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":4,"moon_longitude":145.9622,"elapsed_within_degrees":12.6289},"yoga":{"number":23,"name":"Śubha","sum_longitude":298.2826},"karana":{"half_tithi_index":58,"name":"Catuṣpāda"},"vara":{"number":2,"name":"Ravivāra (Sunday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.245,"elongation":6.358},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.245,"opposition_distance":173.642}},"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":"18:16","solarNoonLocal":"12:12","dayLengthHours":12.146397721241037,"dayLengthDisplay":"12 Hours 08 Mins 47 Secs","nightLengthDisplay":"11 Hours 51 Mins 13 Secs","moonriseLocal":"05:36","moonsetLocal":"17:48","rahuKala":{"name":"Rāhu Kāla","start":"16:45","end":"18:16","startHours":16.75130389943948,"endHours":18.26960361459461,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"12:12","end":"13:43","startHours":12.196404753974093,"endHours":13.714704469129222,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"15:14","end":"16:45","startHours":15.23300418428435,"endHours":16.75130389943948,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:57","end":"09:22","startHours":8.957365361643149,"endHours":9.362245285684518,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.629305798405284,"endHours":6.953209737638378,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:47","end":"12:36","startHours":11.791524829932726,"endHours":12.60128467801546,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:30","end":"05:19","startHours":4.503686197188102,"endHours":5.313446045270838,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:07","startHours":5.111006083250154,"endHours":6.123205893353574,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:02","startHours":14.220804374180933,"endHours":15.030564222263669,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:04","end":"18:28","startHours":18.069603614594612,"endHours":18.46960361459461,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:16","end":"18:47","startHours":18.26960361459461,"endHours":18.77570351964632,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:01","end":"19:46","startHours":18.01960361459461,"endHours":19.76960361459461,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:47","end":"00:36","startHours":23.791524829932726,"endHours":24.60128467801546,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Udveg","start":"06:07","end":"07:38","startHours":6.123205893353574,"endHours":7.641505608508703,"quality":"inauspicious"},{"name":"Chala","start":"07:38","end":"09:10","startHours":7.641505608508703,"endHours":9.159805323663832,"quality":"neutral"},{"name":"Labha","start":"09:10","end":"10:41","startHours":9.159805323663832,"endHours":10.678105038818963,"quality":"auspicious"},{"name":"Amṛta","start":"10:41","end":"12:12","startHours":10.678105038818963,"endHours":12.196404753974093,"quality":"auspicious"},{"name":"Kāla","start":"12:12","end":"13:43","startHours":12.196404753974093,"endHours":13.714704469129222,"quality":"inauspicious"},{"name":"Śubha","start":"13:43","end":"15:14","startHours":13.714704469129222,"endHours":15.23300418428435,"quality":"auspicious"},{"name":"Roga","start":"15:14","end":"16:45","startHours":15.23300418428435,"endHours":16.75130389943948,"quality":"inauspicious"},{"name":"Udveg","start":"16:45","end":"18:16","startHours":16.75130389943948,"endHours":18.26960361459461,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Śubha","start":"18:16","end":"19:45","startHours":18.26960361459461,"endHours":19.75130389943948,"quality":"auspicious"},{"name":"Roga","start":"19:45","end":"21:14","startHours":19.75130389943948,"endHours":21.233004184284354,"quality":"inauspicious"},{"name":"Udveg","start":"21:14","end":"22:43","startHours":21.233004184284354,"endHours":22.714704469129224,"quality":"inauspicious"},{"name":"Chala","start":"22:43","end":"00:12","startHours":22.714704469129224,"endHours":24.196404753974093,"quality":"neutral"},{"name":"Labha","start":"00:12","end":"01:41","startHours":24.196404753974093,"endHours":25.678105038818963,"quality":"auspicious"},{"name":"Amṛta","start":"01:41","end":"03:10","startHours":25.678105038818963,"endHours":27.159805323663832,"quality":"auspicious"},{"name":"Kāla","start":"03:10","end":"04:38","startHours":27.159805323663832,"endHours":28.641505608508705,"quality":"inauspicious"},{"name":"Śubha","start":"04:38","end":"06:07","startHours":28.641505608508705,"endHours":30.123205893353575,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:07","end":"07:07","startHours":6.123205893353574,"endHours":7.123205893353574,"planetary_lord":"Sun"},{"name":"Hora 2","start":"07:07","end":"08:07","startHours":7.123205893353574,"endHours":8.123205893353575,"planetary_lord":"Mars"},{"name":"Hora 3","start":"08:07","end":"09:07","startHours":8.123205893353575,"endHours":9.123205893353575,"planetary_lord":"Jupiter"},{"name":"Hora 4","start":"09:07","end":"10:07","startHours":9.123205893353575,"endHours":10.123205893353575,"planetary_lord":"Saturn"},{"name":"Hora 5","start":"10:07","end":"11:07","startHours":10.123205893353575,"endHours":11.123205893353575,"planetary_lord":"Moon"},{"name":"Hora 6","start":"11:07","end":"12:07","startHours":11.123205893353575,"endHours":12.123205893353575,"planetary_lord":"Mercury"},{"name":"Hora 7","start":"12:07","end":"13:07","startHours":12.123205893353575,"endHours":13.123205893353575,"planetary_lord":"Venus"},{"name":"Hora 8","start":"13:07","end":"14:07","startHours":13.123205893353575,"endHours":14.123205893353575,"planetary_lord":"Sun"},{"name":"Hora 9","start":"14:07","end":"15:07","startHours":14.123205893353575,"endHours":15.123205893353575,"planetary_lord":"Mars"},{"name":"Hora 10","start":"15:07","end":"16:07","startHours":15.123205893353575,"endHours":16.123205893353575,"planetary_lord":"Jupiter"},{"name":"Hora 11","start":"16:07","end":"17:07","startHours":16.123205893353575,"endHours":17.123205893353575,"planetary_lord":"Saturn"},{"name":"Hora 12","start":"17:07","end":"18:07","startHours":17.123205893353575,"endHours":18.123205893353575,"planetary_lord":"Moon"},{"name":"Hora 13","start":"18:07","end":"19:07","startHours":18.123205893353575,"endHours":19.123205893353575,"planetary_lord":"Mercury"},{"name":"Hora 14","start":"19:07","end":"20:07","startHours":19.123205893353575,"endHours":20.123205893353575,"planetary_lord":"Venus"},{"name":"Hora 15","start":"20:07","end":"21:07","startHours":20.123205893353575,"endHours":21.123205893353575,"planetary_lord":"Sun"},{"name":"Hora 16","start":"21:07","end":"22:07","startHours":21.123205893353575,"endHours":22.123205893353575,"planetary_lord":"Mars"},{"name":"Hora 17","start":"22:07","end":"23:07","startHours":22.123205893353575,"endHours":23.123205893353575,"planetary_lord":"Jupiter"},{"name":"Hora 18","start":"23:07","end":"00:07","startHours":23.123205893353575,"endHours":24.123205893353575,"planetary_lord":"Saturn"},{"name":"Hora 19","start":"00:07","end":"01:07","startHours":24.123205893353575,"endHours":25.123205893353575,"planetary_lord":"Moon"},{"name":"Hora 20","start":"01:07","end":"02:07","startHours":25.123205893353575,"endHours":26.123205893353575,"planetary_lord":"Mercury"},{"name":"Hora 21","start":"02:07","end":"03:07","startHours":26.123205893353575,"endHours":27.123205893353575,"planetary_lord":"Venus"},{"name":"Hora 22","start":"03:07","end":"04:07","startHours":27.123205893353575,"endHours":28.123205893353575,"planetary_lord":"Sun"},{"name":"Hora 23","start":"04:07","end":"05:07","startHours":28.123205893353575,"endHours":29.123205893353575,"planetary_lord":"Mars"},{"name":"Hora 24","start":"05:07","end":"06:07","startHours":29.123205893353575,"endHours":30.123205893353575,"planetary_lord":"Jupiter"}],"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":"West (Paścim)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Chatra","quality":"Auspicious"},"drikRitu":"Varṣā (Monsoon)","vedicRitu":"Varṣā (Monsoon)","drikAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":1.2371119127169163,"eotMinutes":7.346914761554353,"ayanamsa":23.8351}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Amāvasyā · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"kanya-sankranti","name":"Kanyā Saṅkrānti (Mahālaya begins)","name_sanskrit":"कन्या सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Virgo; Mahālaya / Pitṛ-Pakṣa solar marker.","vrata":false,"detection":{"sun_rashi":"Kanyā"},"precedence":4}],"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":"-3137-10-20","event":"Karṇa-Vadha (Mahābhārata Day 17)","chart_id":"karna","shared_marker":"same Kṛṣṇa Amāvasyā","url":"/day/-3137-10-20","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 20, 1998 CE · Erode, Tamil Nadu · Vidhyamitra","description":"September 20, 1998 CE for Erode, Tamil Nadu: Kṛṣṇa Amāvasyā, sūryodaya 06:07, sūryāsta 18:16.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1998-09-20","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1998-09-20","sa":"https://sa.vidhyamitra.com/city/erode/1998-09-20","hi":"https://hi.vidhyamitra.com/city/erode/1998-09-20","x-default":"https://vidhyamitra.com/city/erode/1998-09-20"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-17T10:57:51.488Z","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":"2026-05-17T10:57:51.488Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-17T10:57:51.488Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}