{"id":"vidhyamitra:city-day:erode:2031-02-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2031-02-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2031-02-04","date_display":"February 4, 2031 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":2031,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462901.770833,"kali_year":5132,"ahargana":1874436.2708,"sun":{"sidereal_longitude":290.6786,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":70.425,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.7463,"elapsed_within_tithi_degrees":7.7463},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":70.425,"elapsed_within_degrees":3.7583},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":1.1036},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"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":2031,"month":2,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2462901.770833,"ahargana":1874436.2708,"kali_year":5132,"ayanamsa_lahiri":24.2874,"grahas":{"sun":{"sidereal_longitude":290.717798,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false},"moon":{"sidereal_longitude":71.91449799999998,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":2},"retrograde":false,"latitude":-2.0468},"mars":{"sidereal_longitude":193.88489800000002,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"mercury":{"sidereal_longitude":278.768598,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":237.86789799999997,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":315.7983979999999,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":37.56829800000003,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":223.346,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":43.346,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","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":2031,"month":2,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2462901.770833,"kali_year":5132,"ahargana":1874436.2708,"sun":{"sidereal_longitude":290.6786,"rashi":10,"rashi_name":"Makara"},"moon":{"sidereal_longitude":70.425,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":12,"name":"Dvādaśī","paksha":"Śukla","full_name":"Śukla Dvādaśī","elongation_degrees":139.7463,"elapsed_within_tithi_degrees":7.7463},"nakshatra":{"number":6,"name":"Ārdrā","pada":2,"moon_longitude":70.425,"elapsed_within_degrees":3.7583},"yoga":{"number":1,"name":"Viṣkambha","sum_longitude":1.1036},"karana":{"half_tithi_index":23,"name":"Bālava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.047,"elongation":139.746},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.047,"opposition_distance":40.254}},"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":"06:43","sunsetLocal":"18:23","solarNoonLocal":"12:33","dayLengthHours":11.668940592975368,"dayLengthDisplay":"11 Hours 40 Mins 08 Secs","nightLengthDisplay":"12 Hours 19 Mins 52 Secs","moonriseLocal":"15:36","moonsetLocal":"04:20","rahuKala":{"name":"Rāhu Kāla","start":"15:28","end":"16:56","startHours":15.470950554377065,"endHours":16.929568128498985,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:38","end":"11:06","startHours":9.636480257889382,"endHours":11.095097832011302,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:33","end":"14:01","startHours":12.553715406133222,"endHours":14.012332980255144,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:27","end":"09:50","startHours":9.441997914673124,"endHours":9.830962601105636,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:12","end":"07:31","startHours":7.205450967686179,"endHours":7.516622716832189,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:10","end":"12:57","startHours":12.16475071970071,"endHours":12.942680092565734,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:10","end":"05:56","startHours":5.16338636391549,"endHours":5.941315736780514,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:45","end":"06:43","startHours":5.746833393564258,"endHours":6.719245109645539,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:30","end":"15:17","startHours":14.498538838295783,"endHours":15.276468211160807,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:11","end":"18:35","startHours":18.188185702620906,"endHours":18.588185702620905,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:23","end":"18:52","startHours":18.388185702620905,"endHours":18.874391560661547,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:08","end":"19:53","startHours":18.138185702620905,"endHours":19.888185702620905,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:10","end":"00:57","startHours":24.16475071970071,"endHours":24.942680092565734,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:43","end":"08:11","startHours":6.719245109645539,"endHours":8.17786268376746,"quality":"inauspicious"},{"name":"Udveg","start":"08:11","end":"09:38","startHours":8.17786268376746,"endHours":9.636480257889382,"quality":"inauspicious"},{"name":"Chala","start":"09:38","end":"11:06","startHours":9.636480257889382,"endHours":11.095097832011302,"quality":"neutral"},{"name":"Labha","start":"11:06","end":"12:33","startHours":11.095097832011302,"endHours":12.553715406133222,"quality":"auspicious"},{"name":"Amṛta","start":"12:33","end":"14:01","startHours":12.553715406133222,"endHours":14.012332980255144,"quality":"auspicious"},{"name":"Kāla","start":"14:01","end":"15:28","startHours":14.012332980255144,"endHours":15.470950554377065,"quality":"inauspicious"},{"name":"Śubha","start":"15:28","end":"16:56","startHours":15.470950554377065,"endHours":16.929568128498985,"quality":"auspicious"},{"name":"Roga","start":"16:56","end":"18:23","startHours":16.929568128498985,"endHours":18.388185702620905,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:23","end":"19:56","startHours":18.388185702620905,"endHours":19.929568128498985,"quality":"inauspicious"},{"name":"Śubha","start":"19:56","end":"21:28","startHours":19.929568128498985,"endHours":21.470950554377062,"quality":"auspicious"},{"name":"Roga","start":"21:28","end":"23:01","startHours":21.470950554377062,"endHours":23.01233298025514,"quality":"inauspicious"},{"name":"Udveg","start":"23:01","end":"00:33","startHours":23.01233298025514,"endHours":24.55371540613322,"quality":"inauspicious"},{"name":"Chala","start":"00:33","end":"02:06","startHours":24.55371540613322,"endHours":26.0950978320113,"quality":"neutral"},{"name":"Labha","start":"02:06","end":"03:38","startHours":26.0950978320113,"endHours":27.63648025788938,"quality":"auspicious"},{"name":"Amṛta","start":"03:38","end":"05:11","startHours":27.63648025788938,"endHours":29.177862683767458,"quality":"auspicious"},{"name":"Kāla","start":"05:11","end":"06:43","startHours":29.177862683767458,"endHours":30.719245109645538,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:43","end":"07:43","startHours":6.719245109645539,"endHours":7.719245109645539,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:43","end":"08:43","startHours":7.719245109645539,"endHours":8.719245109645538,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:43","end":"09:43","startHours":8.719245109645538,"endHours":9.719245109645538,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:43","end":"10:43","startHours":9.719245109645538,"endHours":10.719245109645538,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:43","end":"11:43","startHours":10.719245109645538,"endHours":11.719245109645538,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:43","end":"12:43","startHours":11.719245109645538,"endHours":12.719245109645538,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:43","end":"13:43","startHours":12.719245109645538,"endHours":13.719245109645538,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:43","end":"14:43","startHours":13.719245109645538,"endHours":14.719245109645538,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:43","end":"15:43","startHours":14.719245109645538,"endHours":15.719245109645538,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:43","end":"16:43","startHours":15.719245109645538,"endHours":16.719245109645538,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:43","end":"17:43","startHours":16.719245109645538,"endHours":17.719245109645538,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:43","end":"18:43","startHours":17.719245109645538,"endHours":18.719245109645538,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:43","end":"19:43","startHours":18.719245109645538,"endHours":19.719245109645538,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:43","end":"20:43","startHours":19.719245109645538,"endHours":20.719245109645538,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:43","end":"21:43","startHours":20.719245109645538,"endHours":21.719245109645538,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:43","end":"22:43","startHours":21.719245109645538,"endHours":22.719245109645538,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:43","end":"23:43","startHours":22.719245109645538,"endHours":23.719245109645538,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:43","end":"00:43","startHours":23.719245109645538,"endHours":24.719245109645538,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:43","end":"01:43","startHours":24.719245109645538,"endHours":25.719245109645538,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:43","end":"02:43","startHours":25.719245109645538,"endHours":26.719245109645538,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:43","end":"03:43","startHours":26.719245109645538,"endHours":27.719245109645538,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:43","end":"04:43","startHours":27.719245109645538,"endHours":28.719245109645538,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:43","end":"05:43","startHours":28.719245109645538,"endHours":29.719245109645538,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:43","end":"06:43","startHours":29.719245109645538,"endHours":30.719245109645538,"planetary_lord":"Saturn"}],"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Padma","quality":"Auspicious"},"drikRitu":"Śiśira (Winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Uttarāyaṇa","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-16.33266171477398,"eotMinutes":-14.091724367993354,"ayanamsa":24.2874}},"calendars":{"vikram_samvat":2088,"vikram_samvatsara":"Raktākṣī","saka_samvat":1953,"saka_samvatsara":"Virodhakṛt","bengali_samvat":1438,"malayalam_era":1207,"nanakshahi_year":562,"lunar_month":"Māgha","lunar_month_paksha_full":"Māgha Śukla Pakṣa","solar_month":"Makara (Tai)","ritu":"Śiśira (Winter)","display_summary":"Māgha Śukla Dvādaśī · Vikram 2088 Raktākṣī · Śaka 1953 Virodhakṛt"},"festivals":[{"id":"makara-sankranti","name":"Makara Saṅkrānti (Uttarāyaṇa)","name_sanskrit":"मकर सङ्क्रान्ति","tradition":"Pan-Hindu","associated_deity":"Sūrya Bhagavān","significance":"Sun enters Capricorn; Uttarāyaṇa (north-going) begins. Bhīṣma's chosen mahaprasthāna time.","vrata":true,"detection":{"sun_rashi":"Makara"},"precedence":1,"sources":["Mahābhārata Bhīṣma-Stuti","Sūrya-Siddhānta"]},{"id":"pongal","name":"Pongal / Thai Pongal","name_sanskrit":"पोङ्गल","tradition":"Regional","associated_deity":"Sūrya Bhagavān","significance":"Tamil 4-day harvest festival; coincides with Makara Saṅkrānti.","vrata":false,"detection":{"sun_rashi":"Makara"},"precedence":2}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — 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 February 4, 2031 CE · Erode, Tamil Nadu · Vidhyamitra","description":"February 4, 2031 CE for Erode, Tamil Nadu: Śukla Dvādaśī, sūryodaya 06:43, sūryāsta 18:23.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2031-02-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2031-02-04","sa":"https://sa.vidhyamitra.com/city/erode/2031-02-04","hi":"https://hi.vidhyamitra.com/city/erode/2031-02-04","x-default":"https://vidhyamitra.com/city/erode/2031-02-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-15T00:44:49.661Z","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":"2026-05-15T00:44:49.661Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-15T00:44:49.661Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}