{"id":"vidhyamitra:city-day:erode:2121-03-31:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2121-03-31","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2121-03-31","date_display":"March 31, 2121 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":2121,"month":3,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2495828.770833,"kali_year":5222,"ahargana":1907363.2708,"sun":{"sidereal_longitude":344.671,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":129.2858,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":144.6148,"elapsed_within_tithi_degrees":0.6148},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":129.2858,"elapsed_within_degrees":9.2858},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.9568},"karana":{"half_tithi_index":24,"name":"Kaulava"},"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":2121,"month":3,"day":31,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2495828.770833,"ahargana":1907363.2708,"kali_year":5222,"ayanamsa_lahiri":25.5467,"grahas":{"sun":{"sidereal_longitude":344.781345,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":130.661945,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":4},"retrograde":false,"latitude":-2.287},"mars":{"sidereal_longitude":104.233945,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":344.955345,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":82.886145,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":false},"venus":{"sidereal_longitude":303.48394499999995,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":61.386345000000006,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mr̥gaśirā","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":278.715,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":98.715,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","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":2121,"month":3,"day":31,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2495828.770833,"kali_year":5222,"ahargana":1907363.2708,"sun":{"sidereal_longitude":344.671,"rashi":12,"rashi_name":"Mīna"},"moon":{"sidereal_longitude":129.2858,"rashi":5,"rashi_name":"Siṃha"},"tithi":{"number":13,"name":"Trayodaśī","paksha":"Śukla","full_name":"Śukla Trayodaśī","elongation_degrees":144.6148,"elapsed_within_tithi_degrees":0.6148},"nakshatra":{"number":10,"name":"Maghā","pada":3,"moon_longitude":129.2858,"elapsed_within_degrees":9.2858},"yoga":{"number":9,"name":"Śūla","sum_longitude":113.9568},"karana":{"half_tithi_index":24,"name":"Kaulava"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.287,"elongation":144.615},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.287,"opposition_distance":35.385}},"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":"06:17","sunsetLocal":"18:30","solarNoonLocal":"12:24","dayLengthHours":12.223130437443263,"dayLengthDisplay":"12 Hours 13 Mins 23 Secs","nightLengthDisplay":"11 Hours 46 Mins 37 Secs","moonriseLocal":"15:57","moonsetLocal":"04:17","rahuKala":{"name":"Rāhu Kāla","start":"07:49","end":"09:20","startHours":7.81287444289355,"endHours":9.340765747573958,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"10:52","end":"12:24","startHours":10.868657052254367,"endHours":12.396548356934773,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:55","end":"15:27","startHours":13.924439661615182,"endHours":15.452330966295591,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:08","end":"09:33","startHours":9.137046906949903,"endHours":9.544484588198012,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:48","end":"07:07","startHours":6.794280239773277,"endHours":7.120230384771764,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:59","end":"12:48","startHours":11.989110675686666,"endHours":12.803986038182883,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:39","end":"05:28","startHours":4.655232413220707,"endHours":5.470107775716924,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:16","end":"06:17","startHours":5.26638893509287,"endHours":6.284983138213142,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:26","end":"15:15","startHours":14.433736763175318,"endHours":15.248612125671535,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:18","end":"18:42","startHours":18.308113575656407,"endHours":18.708113575656405,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:30","end":"19:01","startHours":18.508113575656406,"endHours":19.017410677216542,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:15","end":"20:00","startHours":18.258113575656406,"endHours":20.008113575656406,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:59","end":"00:48","startHours":23.989110675686664,"endHours":24.80398603818288,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:17","end":"07:49","startHours":6.284983138213142,"endHours":7.81287444289355,"quality":"auspicious"},{"name":"Kāla","start":"07:49","end":"09:20","startHours":7.81287444289355,"endHours":9.340765747573958,"quality":"inauspicious"},{"name":"Śubha","start":"09:20","end":"10:52","startHours":9.340765747573958,"endHours":10.868657052254367,"quality":"auspicious"},{"name":"Roga","start":"10:52","end":"12:24","startHours":10.868657052254367,"endHours":12.396548356934773,"quality":"inauspicious"},{"name":"Udveg","start":"12:24","end":"13:55","startHours":12.396548356934773,"endHours":13.924439661615182,"quality":"inauspicious"},{"name":"Chala","start":"13:55","end":"15:27","startHours":13.924439661615182,"endHours":15.452330966295591,"quality":"neutral"},{"name":"Labha","start":"15:27","end":"16:59","startHours":15.452330966295591,"endHours":16.980222270975997,"quality":"auspicious"},{"name":"Amṛta","start":"16:59","end":"18:30","startHours":16.980222270975997,"endHours":18.508113575656406,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:30","end":"19:59","startHours":18.508113575656406,"endHours":19.980222270975997,"quality":"neutral"},{"name":"Labha","start":"19:59","end":"21:27","startHours":19.980222270975997,"endHours":21.45233096629559,"quality":"auspicious"},{"name":"Amṛta","start":"21:27","end":"22:55","startHours":21.45233096629559,"endHours":22.92443966161518,"quality":"auspicious"},{"name":"Kāla","start":"22:55","end":"00:24","startHours":22.92443966161518,"endHours":24.396548356934773,"quality":"inauspicious"},{"name":"Śubha","start":"00:24","end":"01:52","startHours":24.396548356934773,"endHours":25.868657052254367,"quality":"auspicious"},{"name":"Roga","start":"01:52","end":"03:20","startHours":25.868657052254367,"endHours":27.340765747573958,"quality":"inauspicious"},{"name":"Udveg","start":"03:20","end":"04:49","startHours":27.340765747573958,"endHours":28.812874442893552,"quality":"inauspicious"},{"name":"Chala","start":"04:49","end":"06:17","startHours":28.812874442893552,"endHours":30.284983138213143,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:17","end":"07:17","startHours":6.284983138213142,"endHours":7.284983138213142,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:17","end":"08:17","startHours":7.284983138213142,"endHours":8.284983138213143,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:17","end":"09:17","startHours":8.284983138213143,"endHours":9.284983138213143,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:17","end":"10:17","startHours":9.284983138213143,"endHours":10.284983138213143,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:17","end":"11:17","startHours":10.284983138213143,"endHours":11.284983138213143,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:17","end":"12:17","startHours":11.284983138213143,"endHours":12.284983138213143,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:17","end":"13:17","startHours":12.284983138213143,"endHours":13.284983138213143,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:17","end":"14:17","startHours":13.284983138213143,"endHours":14.284983138213143,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:17","end":"15:17","startHours":14.284983138213143,"endHours":15.284983138213143,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:17","end":"16:17","startHours":15.284983138213143,"endHours":16.284983138213143,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:17","end":"17:17","startHours":16.284983138213143,"endHours":17.284983138213143,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:17","end":"18:17","startHours":17.284983138213143,"endHours":18.284983138213143,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:17","end":"19:17","startHours":18.284983138213143,"endHours":19.284983138213143,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:17","end":"20:17","startHours":19.284983138213143,"endHours":20.284983138213143,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:17","end":"21:17","startHours":20.284983138213143,"endHours":21.284983138213143,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:17","end":"22:17","startHours":21.284983138213143,"endHours":22.284983138213143,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:17","end":"23:17","startHours":22.284983138213143,"endHours":23.284983138213143,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:17","end":"00:17","startHours":23.284983138213143,"endHours":24.284983138213143,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:17","end":"01:17","startHours":24.284983138213143,"endHours":25.284983138213143,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:17","end":"02:17","startHours":25.284983138213143,"endHours":26.284983138213143,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:17","end":"03:17","startHours":26.284983138213143,"endHours":27.284983138213143,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:17","end":"04:17","startHours":27.284983138213143,"endHours":28.284983138213143,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:17","end":"05:17","startHours":28.284983138213143,"endHours":29.284983138213143,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:17","end":"06:17","startHours":29.284983138213143,"endHours":30.284983138213143,"planetary_lord":"Venus"}],"taraBala":{"favorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Ārdrā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Svātī","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj"],"unfavorable_nakshatras":["Aśvinī","Punarvasu","Puṣya","Aśleṣā","Maghā","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Bhādrapadā","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":"East (Pūrva)","chandraVasa":"West","rahuVasa":"North-East","anandadiYoga":{"name":"Padma","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":4.0890592955158285,"eotMinutes":-4.661701416086492,"ayanamsa":25.5467}},"calendars":{"vikram_samvat":2178,"vikram_samvatsara":"Jaya","saka_samvat":2043,"saka_samvatsara":"Vṛṣa","bengali_samvat":1528,"malayalam_era":1297,"nanakshahi_year":652,"lunar_month":"Caitra","lunar_month_paksha_full":"Caitra Śukla Pakṣa","solar_month":"Mīna (Paṅkuṇi)","ritu":"Vasanta (Spring)","display_summary":"Caitra Śukla Trayodaśī · Vikram 2178 Jaya · Śaka 2043 Vṛṣa"},"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},{"id":"pradosha-vrata","name":"Pradoṣa Vrata","name_sanskrit":"प्रदोष व्रत","tradition":"Shaiva","associated_deity":"Śiva","significance":"Twilight worship of Śiva on Trayodaśī.","vrata":true,"detection":{"any_of":[{"tithi_number":13},{"tithi_number":28}]},"precedence":7}],"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 March 31, 2121 CE · Erode, Tamil Nadu · Vidhyamitra","description":"March 31, 2121 CE for Erode, Tamil Nadu: Śukla Trayodaśī, sūryodaya 06:17, sūryāsta 18:30.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2121-03-31","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2121-03-31","sa":"https://sa.vidhyamitra.com/city/erode/2121-03-31","hi":"https://hi.vidhyamitra.com/city/erode/2121-03-31","x-default":"https://vidhyamitra.com/city/erode/2121-03-31"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-22T14:36:41.730Z","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":"2026-05-22T14:36:41.730Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-22T14:36:41.730Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}