{"id":"vidhyamitra:city-day:erode:2025-01-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2025-01-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2025-01-13","date_display":"January 13, 2025 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":2025,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460688.770833,"kali_year":5126,"ahargana":1872223.2708,"sun":{"sidereal_longitude":268.7066,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":79.1333,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":170.4267,"elapsed_within_tithi_degrees":2.4267},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.1333,"elapsed_within_degrees":12.4666},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":347.8399},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"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":2025,"month":1,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2460688.770833,"ahargana":1872223.2708,"kali_year":5126,"ayanamsa_lahiri":24.2027,"grahas":{"sun":{"sidereal_longitude":268.8945510000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":77.57635099999999,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","pada":4},"retrograde":false,"latitude":4.4501},"mars":{"sidereal_longitude":92.867951,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":7,"name":"Punarvasu","pada":4},"retrograde":true},"mercury":{"sidereal_longitude":252.10585100000003,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":47.87755099999998,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":3},"retrograde":true},"venus":{"sidereal_longitude":315.67685099999994,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":321.423451,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false},"rahu":{"sidereal_longitude":340.6013,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":160.6013,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","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":2025,"month":1,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2460688.770833,"kali_year":5126,"ahargana":1872223.2708,"sun":{"sidereal_longitude":268.7066,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":79.1333,"rashi":3,"rashi_name":"Mithuna"},"tithi":{"number":15,"name":"Pūrṇimā","paksha":"Śukla","full_name":"Śukla Pūrṇimā","elongation_degrees":170.4267,"elapsed_within_tithi_degrees":2.4267},"nakshatra":{"number":6,"name":"Ārdrā","pada":4,"moon_longitude":79.1333,"elapsed_within_degrees":12.4666},"yoga":{"number":27,"name":"Vaidhṛti","sum_longitude":347.8399},"karana":{"half_tithi_index":28,"name":"Viṣṭi"},"vara":{"number":3,"name":"Somavāra (Monday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":4.45,"elongation":170.427},"lunar":{"type":"lunar","occurs":false,"moon_latitude":4.45,"opposition_distance":9.573}},"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":"06:42","sunsetLocal":"18:13","solarNoonLocal":"12:28","dayLengthHours":11.519084438997714,"dayLengthDisplay":"11 Hours 31 Mins 09 Secs","nightLengthDisplay":"12 Hours 28 Mins 51 Secs","moonriseLocal":"17:20","moonsetLocal":"06:05","rahuKala":{"name":"Rāhu Kāla","start":"08:09","end":"09:35","startHours":8.143128860232084,"endHours":9.583014415106799,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"11:01","end":"12:28","startHours":11.022899969981513,"endHours":12.462785524856226,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"13:54","end":"15:21","startHours":13.902671079730942,"endHours":15.342556634605655,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:23","end":"09:46","startHours":9.391029674456837,"endHours":9.77499915575676,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:11","end":"07:29","startHours":7.183205156982275,"endHours":7.490380742022214,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"12:05","end":"12:51","startHours":12.078816043556303,"endHours":12.84675500615615,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:10","end":"05:56","startHours":5.167365380157674,"endHours":5.935304342757522,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:45","end":"06:42","startHours":5.743319602107561,"endHours":6.70324330535737,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:23","end":"15:09","startHours":14.382632931355847,"endHours":15.150571893955695,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:01","end":"18:25","startHours":18.022327744355085,"endHours":18.422327744355083,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:13","end":"18:42","startHours":18.222327744355084,"endHours":18.702289595979988,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:58","end":"19:43","startHours":17.972327744355084,"endHours":19.722327744355084,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"00:05","end":"00:51","startHours":24.0788160435563,"endHours":24.84675500615615,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Amṛta","start":"06:42","end":"08:09","startHours":6.70324330535737,"endHours":8.143128860232084,"quality":"auspicious"},{"name":"Kāla","start":"08:09","end":"09:35","startHours":8.143128860232084,"endHours":9.583014415106799,"quality":"inauspicious"},{"name":"Śubha","start":"09:35","end":"11:01","startHours":9.583014415106799,"endHours":11.022899969981513,"quality":"auspicious"},{"name":"Roga","start":"11:01","end":"12:28","startHours":11.022899969981513,"endHours":12.462785524856226,"quality":"inauspicious"},{"name":"Udveg","start":"12:28","end":"13:54","startHours":12.462785524856226,"endHours":13.902671079730942,"quality":"inauspicious"},{"name":"Chala","start":"13:54","end":"15:21","startHours":13.902671079730942,"endHours":15.342556634605655,"quality":"neutral"},{"name":"Labha","start":"15:21","end":"16:47","startHours":15.342556634605655,"endHours":16.78244218948037,"quality":"auspicious"},{"name":"Amṛta","start":"16:47","end":"18:13","startHours":16.78244218948037,"endHours":18.222327744355084,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Chala","start":"18:13","end":"19:47","startHours":18.222327744355084,"endHours":19.78244218948037,"quality":"neutral"},{"name":"Labha","start":"19:47","end":"21:21","startHours":19.78244218948037,"endHours":21.342556634605657,"quality":"auspicious"},{"name":"Amṛta","start":"21:21","end":"22:54","startHours":21.342556634605657,"endHours":22.902671079730943,"quality":"auspicious"},{"name":"Kāla","start":"22:54","end":"00:28","startHours":22.902671079730943,"endHours":24.462785524856226,"quality":"inauspicious"},{"name":"Śubha","start":"00:28","end":"02:01","startHours":24.462785524856226,"endHours":26.022899969981513,"quality":"auspicious"},{"name":"Roga","start":"02:01","end":"03:35","startHours":26.022899969981513,"endHours":27.5830144151068,"quality":"inauspicious"},{"name":"Udveg","start":"03:35","end":"05:09","startHours":27.5830144151068,"endHours":29.143128860232082,"quality":"inauspicious"},{"name":"Chala","start":"05:09","end":"06:42","startHours":29.143128860232082,"endHours":30.70324330535737,"quality":"neutral"}],"horas":[{"name":"Hora 1","start":"06:42","end":"07:42","startHours":6.70324330535737,"endHours":7.70324330535737,"planetary_lord":"Moon"},{"name":"Hora 2","start":"07:42","end":"08:42","startHours":7.70324330535737,"endHours":8.70324330535737,"planetary_lord":"Mercury"},{"name":"Hora 3","start":"08:42","end":"09:42","startHours":8.70324330535737,"endHours":9.70324330535737,"planetary_lord":"Venus"},{"name":"Hora 4","start":"09:42","end":"10:42","startHours":9.70324330535737,"endHours":10.70324330535737,"planetary_lord":"Sun"},{"name":"Hora 5","start":"10:42","end":"11:42","startHours":10.70324330535737,"endHours":11.70324330535737,"planetary_lord":"Mars"},{"name":"Hora 6","start":"11:42","end":"12:42","startHours":11.70324330535737,"endHours":12.70324330535737,"planetary_lord":"Jupiter"},{"name":"Hora 7","start":"12:42","end":"13:42","startHours":12.70324330535737,"endHours":13.70324330535737,"planetary_lord":"Saturn"},{"name":"Hora 8","start":"13:42","end":"14:42","startHours":13.70324330535737,"endHours":14.70324330535737,"planetary_lord":"Moon"},{"name":"Hora 9","start":"14:42","end":"15:42","startHours":14.70324330535737,"endHours":15.70324330535737,"planetary_lord":"Mercury"},{"name":"Hora 10","start":"15:42","end":"16:42","startHours":15.70324330535737,"endHours":16.70324330535737,"planetary_lord":"Venus"},{"name":"Hora 11","start":"16:42","end":"17:42","startHours":16.70324330535737,"endHours":17.70324330535737,"planetary_lord":"Sun"},{"name":"Hora 12","start":"17:42","end":"18:42","startHours":17.70324330535737,"endHours":18.70324330535737,"planetary_lord":"Mars"},{"name":"Hora 13","start":"18:42","end":"19:42","startHours":18.70324330535737,"endHours":19.70324330535737,"planetary_lord":"Jupiter"},{"name":"Hora 14","start":"19:42","end":"20:42","startHours":19.70324330535737,"endHours":20.70324330535737,"planetary_lord":"Saturn"},{"name":"Hora 15","start":"20:42","end":"21:42","startHours":20.70324330535737,"endHours":21.70324330535737,"planetary_lord":"Moon"},{"name":"Hora 16","start":"21:42","end":"22:42","startHours":21.70324330535737,"endHours":22.70324330535737,"planetary_lord":"Mercury"},{"name":"Hora 17","start":"22:42","end":"23:42","startHours":22.70324330535737,"endHours":23.70324330535737,"planetary_lord":"Venus"},{"name":"Hora 18","start":"23:42","end":"00:42","startHours":23.70324330535737,"endHours":24.70324330535737,"planetary_lord":"Sun"},{"name":"Hora 19","start":"00:42","end":"01:42","startHours":24.70324330535737,"endHours":25.70324330535737,"planetary_lord":"Mars"},{"name":"Hora 20","start":"01:42","end":"02:42","startHours":25.70324330535737,"endHours":26.70324330535737,"planetary_lord":"Jupiter"},{"name":"Hora 21","start":"02:42","end":"03:42","startHours":26.70324330535737,"endHours":27.70324330535737,"planetary_lord":"Saturn"},{"name":"Hora 22","start":"03:42","end":"04:42","startHours":27.70324330535737,"endHours":28.70324330535737,"planetary_lord":"Moon"},{"name":"Hora 23","start":"04:42","end":"05:42","startHours":28.70324330535737,"endHours":29.70324330535737,"planetary_lord":"Mercury"},{"name":"Hora 24","start":"05:42","end":"06:42","startHours":29.70324330535737,"endHours":30.70324330535737,"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","Mithuna","Siṃha","Vṛścika","Dhanu","Mīna"],"unfavorable_rashis":["Vṛṣabha","Karka","Kanyā","Tulā","Makara","Kumbha"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"North-East","anandadiYoga":{"name":"Mudgara","quality":"Inauspicious"},"drikRitu":"Hemanta (Pre-winter) (Drik)","vedicRitu":"Hemanta (Pre-winter)","drikAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization (Drikpanchang-parity)","declination":-21.45992433734879,"eotMinutes":-8.635931491373626,"ayanamsa":24.2027}},"calendars":{"vikram_samvat":2082,"vikram_samvatsara":"Kālayukta","saka_samvat":1947,"saka_samvatsara":"Viśvāvasu","bengali_samvat":1432,"malayalam_era":1201,"nanakshahi_year":556,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Pūrṇimā · Vikram 2082 Kālayukta · Śaka 1947 Viśvāvasu"},"festivals":[{"id":"paush-purnima","name":"Pauṣa Pūrṇimā (Śākambharī Devī Jayantī)","name_sanskrit":"पौष पूर्णिमा","tradition":"Pan-Hindu","associated_deity":"Devī Śākambharī","significance":"Manifestation of Devī Śākambharī (vegetation-mother).","vrata":true,"detection":{"tithi_number":15,"tithi_paksha":"Śukla","lunar_month":"Pauṣa"},"precedence":3},{"id":"lohri","name":"Lohri","name_sanskrit":"लोहड़ी","tradition":"Regional","significance":"Punjab harvest festival; eve of Makara Saṅkrānti. (Approximated as 13/14 January annually; correct via Sun in Dhanu/Makara cusp.)","vrata":false,"detection":{"sun_rashi":"Dhanu"},"precedence":4},{"id":"dhanu-sankranti","name":"Dhanu Saṅkrānti","name_sanskrit":"धनु सङ्क्रान्ति","tradition":"Pan-Hindu","significance":"Sun enters Sagittarius; Dhanu-māsa (Khara-māsa).","vrata":false,"detection":{"sun_rashi":"Dhanu"},"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Śukla Pūrṇimā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-0562-04-11","event":"Bhagavān Buddha's birth at Lumbinī","chart_id":"buddha","shared_marker":"same Śukla Pūrṇimā","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 January 13, 2025 CE · Erode, Tamil Nadu · Vidhyamitra","description":"January 13, 2025 CE for Erode, Tamil Nadu: Śukla Pūrṇimā, sūryodaya 06:42, sūryāsta 18:13.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2025-01-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2025-01-13","sa":"https://sa.vidhyamitra.com/city/erode/2025-01-13","hi":"https://hi.vidhyamitra.com/city/erode/2025-01-13","x-default":"https://vidhyamitra.com/city/erode/2025-01-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-14T20:49:25.392Z","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":"2026-05-14T20:49:25.392Z","verification":{"type":"community-validated","markers":["matches Drikpanchang ±1 minute on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-14T20:49:25.392Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}