{"id":"vidhyamitra:city-day:chennai:2011-01-08:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/chennai/2011-01-08","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2011-01-08","date_display":"January 8, 2011 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":2011,"month":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455569.770833,"kali_year":5112,"ahargana":1867104.2708,"sun":{"sidereal_longitude":263.1809,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":307.6653,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":44.4844,"elapsed_within_tithi_degrees":8.4844},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1,"moon_longitude":307.6653,"elapsed_within_degrees":0.9987},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.8462},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"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":2011,"month":1,"day":8,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2455569.770833,"ahargana":1867104.2708,"kali_year":5112,"ayanamsa_lahiri":24.0069,"grahas":{"sun":{"sidereal_longitude":263.3820350000001,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":304.96873500000004,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":4},"retrograde":false,"latitude":3.7222},"mars":{"sidereal_longitude":269.687535,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":239.95203500000002,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":333.601135,"rashi":{"number":12,"name":"Mīna"},"nakshatra":{"number":26,"name":"Uttara Bhādrapadā","pada":1},"retrograde":false},"venus":{"sidereal_longitude":216.30423500000006,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"saturn":{"sidereal_longitude":172.67233499999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":251.8306,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":4},"retrograde":false},"ketu":{"sidereal_longitude":71.8306,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":6,"name":"Ārdrā","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":2011,"month":1,"day":8,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2455569.770833,"kali_year":5112,"ahargana":1867104.2708,"sun":{"sidereal_longitude":263.1809,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":307.6653,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":4,"name":"Caturthī","paksha":"Śukla","full_name":"Śukla Caturthī","elongation_degrees":44.4844,"elapsed_within_tithi_degrees":8.4844},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":1,"moon_longitude":307.6653,"elapsed_within_degrees":0.9987},"yoga":{"number":16,"name":"Siddhi","sum_longitude":210.8462},"karana":{"half_tithi_index":7,"name":"Viṣṭi"},"vara":{"number":1,"name":"Śanivāra (Saturday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":3.722,"elongation":44.484},"lunar":{"type":"lunar","occurs":false,"moon_latitude":3.722,"opposition_distance":135.516}},"eclipse_window_40days":[{"offset_days":-4,"type":"solar","occurs":true,"moon_latitude":0.37,"elongation":2.307}]},"city":{"slug":"chennai","name":"Chennai, Tamil Nadu","lat":13.0827,"lon":80.2707,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"mega","elevation_m":6},"tier2":{"city":{"slug":"chennai","name":"Chennai, Tamil Nadu","lat":13.0827,"lon":80.2707,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"mega","elevation_m":6},"sunriseLocal":"06:34","sunsetLocal":"17:57","solarNoonLocal":"12:16","dayLengthHours":11.394275700139575,"dayLengthDisplay":"11 Hours 23 Mins 39 Secs","nightLengthDisplay":"12 Hours 36 Mins 21 Secs","moonriseLocal":"09:11","moonsetLocal":"20:53","rahuKala":{"name":"Rāhu Kāla","start":"09:25","end":"10:50","startHours":9.411746968853892,"endHours":10.836031431371339,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"13:41","end":"15:07","startHours":13.684600356406232,"endHours":15.10888481892368,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"06:34","end":"07:59","startHours":6.563178043818999,"endHours":7.9874625063364455,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:13","end":"09:36","startHours":9.221842373851565,"endHours":9.601651563856219,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"07:02","end":"07:21","startHours":7.037939531324814,"endHours":7.3417868833285365,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:53","end":"12:38","startHours":11.880506703884135,"endHours":12.64012508389344,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"05:03","end":"05:48","startHours":5.043941283800389,"endHours":5.803559663809693,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:37","end":"06:34","startHours":5.613655068807367,"endHours":6.563178043818999,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:10","end":"14:55","startHours":14.159361843912048,"endHours":14.918980223921354,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:45","end":"18:09","startHours":17.757453743958575,"endHours":18.157453743958573,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:57","end":"18:26","startHours":17.957453743958574,"endHours":18.43221523146439,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:42","end":"19:27","startHours":17.707453743958574,"endHours":19.457453743958574,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:53","end":"00:38","startHours":23.880506703884134,"endHours":24.64012508389344,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Kāla","start":"06:34","end":"07:59","startHours":6.563178043818999,"endHours":7.9874625063364455,"quality":"inauspicious"},{"name":"Śubha","start":"07:59","end":"09:25","startHours":7.9874625063364455,"endHours":9.411746968853892,"quality":"auspicious"},{"name":"Roga","start":"09:25","end":"10:50","startHours":9.411746968853892,"endHours":10.836031431371339,"quality":"inauspicious"},{"name":"Udveg","start":"10:50","end":"12:16","startHours":10.836031431371339,"endHours":12.260315893888787,"quality":"inauspicious"},{"name":"Chala","start":"12:16","end":"13:41","startHours":12.260315893888787,"endHours":13.684600356406232,"quality":"neutral"},{"name":"Labha","start":"13:41","end":"15:07","startHours":13.684600356406232,"endHours":15.10888481892368,"quality":"auspicious"},{"name":"Amṛta","start":"15:07","end":"16:32","startHours":15.10888481892368,"endHours":16.533169281441126,"quality":"auspicious"},{"name":"Kāla","start":"16:32","end":"17:57","startHours":16.533169281441126,"endHours":17.957453743958574,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Labha","start":"17:57","end":"19:32","startHours":17.957453743958574,"endHours":19.533169281441126,"quality":"auspicious"},{"name":"Amṛta","start":"19:32","end":"21:07","startHours":19.533169281441126,"endHours":21.10888481892368,"quality":"auspicious"},{"name":"Kāla","start":"21:07","end":"22:41","startHours":21.10888481892368,"endHours":22.684600356406232,"quality":"inauspicious"},{"name":"Śubha","start":"22:41","end":"00:16","startHours":22.684600356406232,"endHours":24.260315893888787,"quality":"auspicious"},{"name":"Roga","start":"00:16","end":"01:50","startHours":24.260315893888787,"endHours":25.83603143137134,"quality":"inauspicious"},{"name":"Udveg","start":"01:50","end":"03:25","startHours":25.83603143137134,"endHours":27.41174696885389,"quality":"inauspicious"},{"name":"Chala","start":"03:25","end":"04:59","startHours":27.41174696885389,"endHours":28.987462506336446,"quality":"neutral"},{"name":"Labha","start":"04:59","end":"06:34","startHours":28.987462506336446,"endHours":30.563178043819,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:34","end":"07:34","startHours":6.563178043818999,"endHours":7.563178043818999,"planetary_lord":"Saturn"},{"name":"Hora 2","start":"07:34","end":"08:34","startHours":7.563178043818999,"endHours":8.563178043818999,"planetary_lord":"Moon"},{"name":"Hora 3","start":"08:34","end":"09:34","startHours":8.563178043818999,"endHours":9.563178043818999,"planetary_lord":"Mercury"},{"name":"Hora 4","start":"09:34","end":"10:34","startHours":9.563178043818999,"endHours":10.563178043818999,"planetary_lord":"Venus"},{"name":"Hora 5","start":"10:34","end":"11:34","startHours":10.563178043818999,"endHours":11.563178043818999,"planetary_lord":"Sun"},{"name":"Hora 6","start":"11:34","end":"12:34","startHours":11.563178043818999,"endHours":12.563178043818999,"planetary_lord":"Mars"},{"name":"Hora 7","start":"12:34","end":"13:34","startHours":12.563178043818999,"endHours":13.563178043818999,"planetary_lord":"Jupiter"},{"name":"Hora 8","start":"13:34","end":"14:34","startHours":13.563178043818999,"endHours":14.563178043818999,"planetary_lord":"Saturn"},{"name":"Hora 9","start":"14:34","end":"15:34","startHours":14.563178043818999,"endHours":15.563178043818999,"planetary_lord":"Moon"},{"name":"Hora 10","start":"15:34","end":"16:34","startHours":15.563178043818999,"endHours":16.563178043819,"planetary_lord":"Mercury"},{"name":"Hora 11","start":"16:34","end":"17:34","startHours":16.563178043819,"endHours":17.563178043819,"planetary_lord":"Venus"},{"name":"Hora 12","start":"17:34","end":"18:34","startHours":17.563178043819,"endHours":18.563178043819,"planetary_lord":"Sun"},{"name":"Hora 13","start":"18:34","end":"19:34","startHours":18.563178043819,"endHours":19.563178043819,"planetary_lord":"Mars"},{"name":"Hora 14","start":"19:34","end":"20:34","startHours":19.563178043819,"endHours":20.563178043819,"planetary_lord":"Jupiter"},{"name":"Hora 15","start":"20:34","end":"21:34","startHours":20.563178043819,"endHours":21.563178043819,"planetary_lord":"Saturn"},{"name":"Hora 16","start":"21:34","end":"22:34","startHours":21.563178043819,"endHours":22.563178043819,"planetary_lord":"Moon"},{"name":"Hora 17","start":"22:34","end":"23:34","startHours":22.563178043819,"endHours":23.563178043819,"planetary_lord":"Mercury"},{"name":"Hora 18","start":"23:34","end":"00:34","startHours":23.563178043819,"endHours":24.563178043819,"planetary_lord":"Venus"},{"name":"Hora 19","start":"00:34","end":"01:34","startHours":24.563178043819,"endHours":25.563178043819,"planetary_lord":"Sun"},{"name":"Hora 20","start":"01:34","end":"02:34","startHours":25.563178043819,"endHours":26.563178043819,"planetary_lord":"Mars"},{"name":"Hora 21","start":"02:34","end":"03:34","startHours":26.563178043819,"endHours":27.563178043819,"planetary_lord":"Jupiter"},{"name":"Hora 22","start":"03:34","end":"04:34","startHours":27.563178043819,"endHours":28.563178043819,"planetary_lord":"Saturn"},{"name":"Hora 23","start":"04:34","end":"05:34","startHours":28.563178043819,"endHours":29.563178043819,"planetary_lord":"Moon"},{"name":"Hora 24","start":"05:34","end":"06:34","startHours":29.563178043819,"endHours":30.563178043819,"planetary_lord":"Mercury"}],"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","Vṛścika","Dhanu","Kumbha"],"unfavorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Makara","Mīna"]},"dishaShool":"East (Pūrva)","chandraVasa":"South","rahuVasa":"East","anandadiYoga":{"name":"Śubha","quality":"Auspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Hemanta (Pre-winter)","tropicalAyana":"Uttarāyaṇa","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-22.306140678802144,"eotMinutes":-6.7017536333273355,"ayanamsa":24.0069}},"calendars":{"vikram_samvat":2068,"vikram_samvatsara":"Krodhi","saka_samvat":1933,"saka_samvatsara":"Khara","bengali_samvat":1418,"malayalam_era":1187,"nanakshahi_year":542,"lunar_month":"Pauṣa","lunar_month_paksha_full":"Pauṣa Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Pauṣa","lunar_month_amanta":"Pauṣa","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Dhanus (Mārgaḻi)","ritu":"Hemanta (Pre-winter)","display_summary":"Pauṣa Śukla Caturthī · Vikram 2068 Krodhi · Śaka 1933 Khara"},"festivals":[{"id":"vinayaka-chaturthi","name":"Vināyaka Caturthī (monthly)","name_sanskrit":"विनायक चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Śukla-pakṣa Caturthī; auspicious for new ventures.","vrata":true,"detection":{"tithi_number":4,"tithi_paksha":"Śukla"},"precedence":6}],"todays_walk":{"walk":{"id":"shani-walk","name":"Śani Walk","name_sanskrit":"शनि यात्रा","type":"graha","description":"Tapas + endurance + BG 17.14-19.","step_count":7,"url":"/walk/shani-walk"},"reason":"Śanivāra (Saturday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"chennai"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 8, 2011 CE · Chennai, Tamil Nadu · Vidhyamitra","description":"January 8, 2011 CE for Chennai, Tamil Nadu: Śukla Caturthī, sūryodaya 06:34, sūryāsta 17:57.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/chennai/2011-01-08","hreflang_alternates":{"en":"https://vidhyamitra.com/city/chennai/2011-01-08","sa":"https://sa.vidhyamitra.com/city/chennai/2011-01-08","hi":"https://hi.vidhyamitra.com/city/chennai/2011-01-08","x-default":"https://vidhyamitra.com/city/chennai/2011-01-08"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-02T20:28:28.739Z","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":"2026-06-02T20:28:28.739Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-02T20:28:28.739Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}