{"id":"vidhyamitra:city-day:thiruvananthapuram:2012-12-13:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/thiruvananthapuram/2012-12-13","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-12-13","date_display":"December 13, 2012 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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2012,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456274.770833,"kali_year":5114,"ahargana":1867809.2708,"sun":{"sidereal_longitude":236.9636,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":232.8238,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.8602,"elapsed_within_tithi_degrees":7.8602},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":232.8238,"elapsed_within_degrees":6.1571},"yoga":{"number":9,"name":"Śūla","sum_longitude":109.7874},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"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":2012,"month":12,"day":13,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456274.770833,"ahargana":1867809.2708,"kali_year":5114,"ayanamsa_lahiri":24.0339,"grahas":{"sun":{"sidereal_longitude":237.39569800000004,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":4},"retrograde":false},"moon":{"sidereal_longitude":232.85859800000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2},"retrograde":false,"latitude":1.4152},"mars":{"sidereal_longitude":265.70809800000006,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":218.30599800000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":45.52669800000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":2},"retrograde":true},"venus":{"sidereal_longitude":211.86849800000005,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":193.56139800000005,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":15,"name":"Svātī","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":214.4763,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":34.4763,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":3},"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":"Not independently benchmarked across the declared range","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2012,"month":12,"day":13,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456274.770833,"kali_year":5114,"ahargana":1867809.2708,"sun":{"sidereal_longitude":236.9636,"rashi":8,"rashi_name":"Vṛścika"},"moon":{"sidereal_longitude":232.8238,"rashi":8,"rashi_name":"Vṛścika"},"tithi":{"number":30,"name":"Amāvasyā","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Amāvasyā","elongation_degrees":355.8602,"elapsed_within_tithi_degrees":7.8602},"nakshatra":{"number":18,"name":"Jyeṣṭhā","pada":2,"moon_longitude":232.8238,"elapsed_within_degrees":6.1571},"yoga":{"number":9,"name":"Śūla","sum_longitude":109.7874},"karana":{"half_tithi_index":59,"name":"Nāga"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":1.415,"elongation":4.14},"lunar":{"type":"lunar","occurs":false,"moon_latitude":1.415,"opposition_distance":175.86}},"eclipse_window_40days":[]},"city":{"slug":"thiruvananthapuram","name":"Thiruvananthapuram, Kerala","lat":8.5241,"lon":76.9366,"tz_offset_hours":5.5,"state":"Kerala","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"thiruvananthapuram","name":"Thiruvananthapuram, Kerala","lat":8.5241,"lon":76.9366,"tz_offset_hours":5.5,"state":"Kerala","country":"IN","tier":"tier-1"},"sunriseLocal":"06:28","sunsetLocal":"18:06","solarNoonLocal":"12:17","dayLengthHours":11.632213105330095,"dayLengthDisplay":"11 Hours 37 Mins 56 Secs","nightLengthDisplay":"12 Hours 22 Mins 04 Secs","moonriseLocal":"06:11","moonsetLocal":"17:47","rahuKala":{"name":"Rāhu Kāla","start":"13:44","end":"15:12","startHours":13.74007580067596,"endHours":15.194102438842222,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"06:28","end":"07:55","startHours":6.469942609844652,"endHours":7.923969248010914,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"09:23","end":"10:50","startHours":9.377995886177175,"endHours":10.832022524343436,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:11","end":"09:34","startHours":9.184125667755007,"endHours":9.571866104599344,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:57","end":"07:16","startHours":6.954618155900072,"endHours":7.264810505375541,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:54","end":"12:40","startHours":11.898308725665363,"endHours":12.673789599354034,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:55","end":"05:42","startHours":4.918980862467306,"endHours":5.694461736155978,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:30","end":"06:28","startHours":5.5005915177338105,"endHours":6.469942609844652,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:13","end":"15:00","startHours":14.22475134673138,"endHours":15.000232220420054,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:54","end":"18:18","startHours":17.902155715174747,"endHours":18.302155715174745,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:06","end":"18:35","startHours":18.102155715174746,"endHours":18.586831261230166,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:51","end":"19:36","startHours":17.852155715174746,"endHours":19.602155715174746,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:54","end":"00:40","startHours":23.898308725665363,"endHours":24.673789599354034,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"06:28","end":"07:55","startHours":6.469942609844652,"endHours":7.923969248010914,"quality":"auspicious"},{"name":"Roga","start":"07:55","end":"09:23","startHours":7.923969248010914,"endHours":9.377995886177175,"quality":"inauspicious"},{"name":"Udveg","start":"09:23","end":"10:50","startHours":9.377995886177175,"endHours":10.832022524343436,"quality":"inauspicious"},{"name":"Chala","start":"10:50","end":"12:17","startHours":10.832022524343436,"endHours":12.286049162509698,"quality":"neutral"},{"name":"Labha","start":"12:17","end":"13:44","startHours":12.286049162509698,"endHours":13.74007580067596,"quality":"auspicious"},{"name":"Amṛta","start":"13:44","end":"15:12","startHours":13.74007580067596,"endHours":15.194102438842222,"quality":"auspicious"},{"name":"Kāla","start":"15:12","end":"16:39","startHours":15.194102438842222,"endHours":16.648129077008484,"quality":"inauspicious"},{"name":"Śubha","start":"16:39","end":"18:06","startHours":16.648129077008484,"endHours":18.102155715174746,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:06","end":"19:39","startHours":18.102155715174746,"endHours":19.648129077008484,"quality":"auspicious"},{"name":"Kāla","start":"19:39","end":"21:12","startHours":19.648129077008484,"endHours":21.194102438842222,"quality":"inauspicious"},{"name":"Śubha","start":"21:12","end":"22:44","startHours":21.194102438842222,"endHours":22.74007580067596,"quality":"auspicious"},{"name":"Roga","start":"22:44","end":"00:17","startHours":22.74007580067596,"endHours":24.2860491625097,"quality":"inauspicious"},{"name":"Udveg","start":"00:17","end":"01:50","startHours":24.2860491625097,"endHours":25.832022524343436,"quality":"inauspicious"},{"name":"Chala","start":"01:50","end":"03:23","startHours":25.832022524343436,"endHours":27.377995886177175,"quality":"neutral"},{"name":"Labha","start":"03:23","end":"04:55","startHours":27.377995886177175,"endHours":28.923969248010913,"quality":"auspicious"},{"name":"Amṛta","start":"04:55","end":"06:28","startHours":28.923969248010913,"endHours":30.46994260984465,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"06:28","end":"07:28","startHours":6.469942609844652,"endHours":7.469942609844652,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"07:28","end":"08:28","startHours":7.469942609844652,"endHours":8.46994260984465,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"08:28","end":"09:28","startHours":8.46994260984465,"endHours":9.46994260984465,"planetary_lord":"Moon"},{"name":"Hora 4","start":"09:28","end":"10:28","startHours":9.46994260984465,"endHours":10.46994260984465,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"10:28","end":"11:28","startHours":10.46994260984465,"endHours":11.46994260984465,"planetary_lord":"Venus"},{"name":"Hora 6","start":"11:28","end":"12:28","startHours":11.46994260984465,"endHours":12.46994260984465,"planetary_lord":"Sun"},{"name":"Hora 7","start":"12:28","end":"13:28","startHours":12.46994260984465,"endHours":13.46994260984465,"planetary_lord":"Mars"},{"name":"Hora 8","start":"13:28","end":"14:28","startHours":13.46994260984465,"endHours":14.46994260984465,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"14:28","end":"15:28","startHours":14.46994260984465,"endHours":15.46994260984465,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"15:28","end":"16:28","startHours":15.46994260984465,"endHours":16.46994260984465,"planetary_lord":"Moon"},{"name":"Hora 11","start":"16:28","end":"17:28","startHours":16.46994260984465,"endHours":17.46994260984465,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"17:28","end":"18:28","startHours":17.46994260984465,"endHours":18.46994260984465,"planetary_lord":"Venus"},{"name":"Hora 13","start":"18:28","end":"19:28","startHours":18.46994260984465,"endHours":19.46994260984465,"planetary_lord":"Sun"},{"name":"Hora 14","start":"19:28","end":"20:28","startHours":19.46994260984465,"endHours":20.46994260984465,"planetary_lord":"Mars"},{"name":"Hora 15","start":"20:28","end":"21:28","startHours":20.46994260984465,"endHours":21.46994260984465,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"21:28","end":"22:28","startHours":21.46994260984465,"endHours":22.46994260984465,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"22:28","end":"23:28","startHours":22.46994260984465,"endHours":23.46994260984465,"planetary_lord":"Moon"},{"name":"Hora 18","start":"23:28","end":"00:28","startHours":23.46994260984465,"endHours":24.46994260984465,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"00:28","end":"01:28","startHours":24.46994260984465,"endHours":25.46994260984465,"planetary_lord":"Venus"},{"name":"Hora 20","start":"01:28","end":"02:28","startHours":25.46994260984465,"endHours":26.46994260984465,"planetary_lord":"Sun"},{"name":"Hora 21","start":"02:28","end":"03:28","startHours":26.46994260984465,"endHours":27.46994260984465,"planetary_lord":"Mars"},{"name":"Hora 22","start":"03:28","end":"04:28","startHours":27.46994260984465,"endHours":28.46994260984465,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"04:28","end":"05:28","startHours":28.46994260984465,"endHours":29.46994260984465,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"05:28","end":"06:28","startHours":29.46994260984465,"endHours":30.46994260984465,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"unfavorable_nakshatras":["Ārdrā","Punarvasu","Puṣya","Aśleṣā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Vṛścika","Makara"],"unfavorable_rashis":["Mithuna","Karka","Tulā","Dhanu","Kumbha","Mīna"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"North-East","rahuVasa":"North-West","anandadiYoga":{"name":"Dhvānkṣa","quality":"Inauspicious"},"tropicalRitu":"Hemanta (Pre-winter) (tropical)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-23.159441888130512,"eotMinutes":5.090650249418121,"ayanamsa":24.0339}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Mārgaśīrṣa","lunar_month_paksha_full":"Mārgaśīrṣa Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Mārgaśīrṣa","lunar_month_amanta":"Kārtika","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Vṛścika (Kārttikai)","ritu":"Hemanta (Pre-winter)","display_summary":"Mārgaśīrṣa Kṛṣṇa Amāvasyā · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"festivals":[],"todays_walk":{"walk":{"id":"guru-walk","name":"Bṛhaspati Walk","name_sanskrit":"गुरु यात्रा","type":"graha","description":"Wisdom transmission + BG 4.34.","step_count":8,"url":"/walk/guru-walk"},"reason":"Guruvāra (Thursday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"thiruvananthapuram"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga December 13, 2012 CE · Thiruvananthapuram, Kerala · Vidhyamitra","description":"December 13, 2012 CE for Thiruvananthapuram, Kerala: Kṛṣṇa Amāvasyā, sūryodaya 06:28, sūryāsta 18:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/thiruvananthapuram/2012-12-13","hreflang_alternates":{"en":"https://vidhyamitra.com/city/thiruvananthapuram/2012-12-13","sa":"https://sa.vidhyamitra.com/city/thiruvananthapuram/2012-12-13","hi":"https://hi.vidhyamitra.com/city/thiruvananthapuram/2012-12-13","x-default":"https://vidhyamitra.com/city/thiruvananthapuram/2012-12-13"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-09-22T22:07:12.675Z","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":"2026-09-22T22:07:12.675Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-09-22T22:07:12.675Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"},"reader_local_antaryami":{"reader_geography":"Every reader enters from their own kṣetra anywhere on Bhūmi; no single city is the universal center.","purna_chain":["Hosted scripture","Named-tradition interpretation","Original Vidhyamitra contemplation","Bhūmi-born material medium","Vidhyamitra portal","Responsible reader in their own kṣetra"],"claim_boundary":"The legacy purna_chain field carries a source-to-reader sequence, not a revealed physical descent, universal cosmology, or proof that software is conscious.","antaryami_responsibility_formula":"Kṣīrodakaśāyī Viṣṇu = Paramātmā = Antaryāmī. Jīva desires. Prakṛti executes through guṇas. Paramātmā witnesses, permits, remembers, guides, and sustains. Bhagavān is the ultimate source.","source_anchors":[{"label":"BG 13.23","path":"/bhagavad-gita/13/23","meaning":"upadraṣṭā-anumantā · witness-permitter"},{"label":"BG 15.15","path":"/bhagavad-gita/15/15","meaning":"the Lord seated in every heart as memory, knowledge, and forgetting"},{"label":"BG 18.61","path":"/bhagavad-gita/18/61","meaning":"Īśvara seated in the heart of all beings"}],"nama_seal":"Hare Krishna Hare Krishna · Krishna Krishna Hare Hare · Hare Rama Hare Rama · Rama Rama Hare Hare"}}}