{"id":"vidhyamitra:city-day:erode:1998-04-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/1998-04-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1998-04-13","date_display":"April 13, 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":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450916.770833,"kali_year":5099,"ahargana":1862451.2708,"sun":{"sidereal_longitude":359.2328,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":193.1467,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":193.9139,"elapsed_within_tithi_degrees":1.9139},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":193.1467,"elapsed_within_degrees":6.48},"yoga":{"number":15,"name":"Vajra","sum_longitude":192.3794},"karana":{"half_tithi_index":32,"name":"Taitila"},"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":1998,"month":4,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2450916.770833,"ahargana":1862451.2708,"kali_year":5099,"ayanamsa_lahiri":23.829,"grahas":{"sun":{"sidereal_longitude":359.091513,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"moon":{"sidereal_longitude":191.15211299999999,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":2},"retrograde":false,"latitude":3.6749},"mars":{"sidereal_longitude":6.217812999999978,"rashi":{"number":1,"name":"Meṣa"},"nakshatra":{"number":1,"name":"Aśvinī","pada":2},"retrograde":false},"mercury":{"sidereal_longitude":348.371813,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":1},"retrograde":true},"jupiter":{"sidereal_longitude":322.00951299999997,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":313.365813,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":359.449813,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":27,"name":"Revatī","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":138.3689,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":11,"name":"Pūrva Phalgunī","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":318.3689,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","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":1998,"month":4,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2450916.770833,"kali_year":5099,"ahargana":1862451.2708,"sun":{"sidereal_longitude":359.2328,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":193.1467,"rashi":7,"rashi_name":"Tulā"},"tithi":{"number":17,"name":"Dvitīyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Dvitīyā","elongation_degrees":193.9139,"elapsed_within_tithi_degrees":1.9139},"nakshatra":{"number":15,"name":"Svātī","pada":2,"moon_longitude":193.1467,"elapsed_within_degrees":6.48},"yoga":{"number":15,"name":"Vajra","sum_longitude":192.3794},"karana":{"half_tithi_index":32,"name":"Taitila"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.675,"elongation":166.086},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.675,"opposition_distance":13.914}},"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":"06:09","sunsetLocal":"18:31","solarNoonLocal":"12:20","dayLengthHours":12.355020398712227,"dayLengthDisplay":"12 Hours 21 Mins 18 Secs","nightLengthDisplay":"11 Hours 38 Mins 42 Secs","moonriseLocal":"19:16","moonsetLocal":"07:00","rahuKala":{"name":"Rāhu Kāla","start":"07:42","end":"09:15","startHours":7.698550864311319,"endHours":9.242928414150349,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:47","end":"12:20","startHours":10.787305963989375,"endHours":12.331683513828406,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:53","end":"15:25","startHours":13.876061063667432,"endHours":15.420438613506462,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:02","end":"09:27","startHours":9.037011407505144,"endHours":9.448845420795552,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:40","end":"07:00","startHours":6.6689658310853,"endHours":6.998433041717626,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:55","end":"12:45","startHours":11.919849500537998,"endHours":12.743517527118813,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:30","end":"05:20","startHours":4.506837261310661,"endHours":5.330505287891476,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:07","end":"06:09","startHours":5.124588281246272,"endHours":6.154173314472291,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:13","startHours":14.390853580280442,"endHours":15.214521606861258,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:19","end":"18:43","startHours":18.30919371318452,"endHours":18.70919371318452,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:31","end":"19:01","startHours":18.50919371318452,"endHours":19.02398622979753,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:16","end":"20:01","startHours":18.25919371318452,"endHours":20.00919371318452,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:55","end":"00:45","startHours":23.919849500538,"endHours":24.74351752711881,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:09","end":"07:42","startHours":6.154173314472291,"endHours":7.698550864311319,"quality":"auspicious"},{"name":"Kāla","start":"07:42","end":"09:15","startHours":7.698550864311319,"endHours":9.242928414150349,"quality":"inauspicious"},{"name":"Śubha","start":"09:15","end":"10:47","startHours":9.242928414150349,"endHours":10.787305963989375,"quality":"auspicious"},{"name":"Roga","start":"10:47","end":"12:20","startHours":10.787305963989375,"endHours":12.331683513828406,"quality":"inauspicious"},{"name":"Udveg","start":"12:20","end":"13:53","startHours":12.331683513828406,"endHours":13.876061063667432,"quality":"inauspicious"},{"name":"Chala","start":"13:53","end":"15:25","startHours":13.876061063667432,"endHours":15.420438613506462,"quality":"neutral"},{"name":"Labha","start":"15:25","end":"16:58","startHours":15.420438613506462,"endHours":16.96481616334549,"quality":"auspicious"},{"name":"Amṛta","start":"16:58","end":"18:31","startHours":16.96481616334549,"endHours":18.50919371318452,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:31","end":"19:58","startHours":18.50919371318452,"endHours":19.96481616334549,"quality":"neutral"},{"name":"Labha","start":"19:58","end":"21:25","startHours":19.96481616334549,"endHours":21.420438613506462,"quality":"auspicious"},{"name":"Amṛta","start":"21:25","end":"22:53","startHours":21.420438613506462,"endHours":22.876061063667436,"quality":"auspicious"},{"name":"Kāla","start":"22:53","end":"00:20","startHours":22.876061063667436,"endHours":24.331683513828406,"quality":"inauspicious"},{"name":"Śubha","start":"00:20","end":"01:47","startHours":24.331683513828406,"endHours":25.787305963989375,"quality":"auspicious"},{"name":"Roga","start":"01:47","end":"03:15","startHours":25.787305963989375,"endHours":27.24292841415035,"quality":"inauspicious"},{"name":"Udveg","start":"03:15","end":"04:42","startHours":27.24292841415035,"endHours":28.698550864311322,"quality":"inauspicious"},{"name":"Chala","start":"04:42","end":"06:09","startHours":28.698550864311322,"endHours":30.154173314472292,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:09","end":"07:09","startHours":6.154173314472291,"endHours":7.154173314472291,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:09","end":"08:09","startHours":7.154173314472291,"endHours":8.154173314472292,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:09","end":"09:09","startHours":8.154173314472292,"endHours":9.154173314472292,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:09","end":"10:09","startHours":9.154173314472292,"endHours":10.154173314472292,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:09","end":"11:09","startHours":10.154173314472292,"endHours":11.154173314472292,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:09","end":"12:09","startHours":11.154173314472292,"endHours":12.154173314472292,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:09","end":"13:09","startHours":12.154173314472292,"endHours":13.154173314472292,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:09","end":"14:09","startHours":13.154173314472292,"endHours":14.154173314472292,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:09","end":"15:09","startHours":14.154173314472292,"endHours":15.154173314472292,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:09","end":"16:09","startHours":15.154173314472292,"endHours":16.154173314472292,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:09","end":"17:09","startHours":16.154173314472292,"endHours":17.154173314472292,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:09","end":"18:09","startHours":17.154173314472292,"endHours":18.154173314472292,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:09","end":"19:09","startHours":18.154173314472292,"endHours":19.154173314472292,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:09","end":"20:09","startHours":19.154173314472292,"endHours":20.154173314472292,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:09","end":"21:09","startHours":20.154173314472292,"endHours":21.154173314472292,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:09","end":"22:09","startHours":21.154173314472292,"endHours":22.154173314472292,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:09","end":"23:09","startHours":22.154173314472292,"endHours":23.154173314472292,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:09","end":"00:09","startHours":23.154173314472292,"endHours":24.154173314472292,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:09","end":"01:09","startHours":24.154173314472292,"endHours":25.154173314472292,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:09","end":"02:09","startHours":25.154173314472292,"endHours":26.154173314472292,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:09","end":"03:09","startHours":26.154173314472292,"endHours":27.154173314472292,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:09","end":"04:09","startHours":27.154173314472292,"endHours":28.154173314472292,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:09","end":"05:09","startHours":28.154173314472292,"endHours":29.154173314472292,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:09","end":"06:09","startHours":29.154173314472292,"endHours":30.154173314472292,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Punarvasu","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Uttara Phalgunī","Hasta","Citrā","Svātī","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"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":"East (Pūrva)","chandraVasa":"North","rahuVasa":"North-East","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"drikRitu":"Vasanta (Spring) (Drik)","vedicRitu":"Śiśira (Winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":8.910903228062644,"eotMinutes":-0.7698108297043191,"ayanamsa":23.829}},"calendars":{"vikram_samvat":2055,"vikram_samvatsara":"Khara","saka_samvat":1920,"saka_samvatsara":"Bahudhānya","bengali_samvat":1405,"malayalam_era":1174,"nanakshahi_year":529,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Kṛṣṇa Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Kṛṣṇa Dvitīyā · Vikram 2055 Khara · Śaka 1920 Bahudhānya"},"festivals":[{"id":"mina-sankranti","name":"Mīna Saṅkrānti","name_sanskrit":"मीन सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Pisces; Mīna-māsa begins.","vrata":false,"detection":{"sun_rashi":"Mīna"},"precedence":5}],"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 April 13, 1998 CE · Erode, Tamil Nadu · Vidhyamitra","description":"April 13, 1998 CE for Erode, Tamil Nadu: Kṛṣṇa Dvitīyā, sūryodaya 06:09, sūryāsta 18:31.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/1998-04-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/1998-04-13","sa":"https://sa.vidhyamitra.com/city/erode/1998-04-13","hi":"https://hi.vidhyamitra.com/city/erode/1998-04-13","x-default":"https://vidhyamitra.com/city/erode/1998-04-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-16T23:49:24.741Z","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":"2026-05-16T23:49:24.741Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-16T23:49:24.741Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}