{"id":"vidhyamitra:city-day:colombo:2012-10-04:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/2012-10-04","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2012-10-04","date_display":"October 4, 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":"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":2012,"month":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456204.770833,"kali_year":5114,"ahargana":1867739.2708,"sun":{"sidereal_longitude":166.4135,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":33.239,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":226.8254,"elapsed_within_tithi_degrees":10.8254},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":33.239,"elapsed_within_degrees":6.5723},"yoga":{"number":15,"name":"Vajra","sum_longitude":199.6525},"karana":{"half_tithi_index":37,"name":"Bālava"},"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":10,"day":4,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2456204.770833,"ahargana":1867739.2708,"kali_year":5114,"ayanamsa_lahiri":24.0312,"grahas":{"sun":{"sidereal_longitude":167.189573,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"moon":{"sidereal_longitude":30.650373000000002,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2},"retrograde":false,"latitude":0.3876},"mars":{"sidereal_longitude":213.645173,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":183.60357299999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":52.00427300000001,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":4,"name":"Rohiṇī","pada":4},"retrograde":false},"venus":{"sidereal_longitude":126.680073,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":185.48677299999997,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":4},"retrograde":false},"rahu":{"sidereal_longitude":218.1852,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":17,"name":"Anurādhā","pada":2},"retrograde":false},"ketu":{"sidereal_longitude":38.1852,"rashi":{"number":2,"name":"Vṛṣabha"},"nakshatra":{"number":3,"name":"Kṛttikā","pada":4},"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":2012,"month":10,"day":4,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2456204.770833,"kali_year":5114,"ahargana":1867739.2708,"sun":{"sidereal_longitude":166.4135,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":33.239,"rashi":2,"rashi_name":"Vṛṣabha"},"tithi":{"number":19,"name":"Caturthī","paksha":"Kṛṣṇa","full_name":"Kṛṣṇa Caturthī","elongation_degrees":226.8254,"elapsed_within_tithi_degrees":10.8254},"nakshatra":{"number":3,"name":"Kṛttikā","pada":2,"moon_longitude":33.239,"elapsed_within_degrees":6.5723},"yoga":{"number":15,"name":"Vajra","sum_longitude":199.6525},"karana":{"half_tithi_index":37,"name":"Bālava"},"vara":{"number":6,"name":"Guruvāra (Thursday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":0.388,"elongation":133.175},"lunar":{"type":"lunar","occurs":false,"moon_latitude":0.388,"opposition_distance":46.825}},"eclipse_window_40days":[]},"city":{"slug":"colombo","name":"Colombo, Sri Lanka","lat":6.9271,"lon":79.8612,"tz_offset_hours":5.5,"country":"LK","tier":"diaspora"},"tier2":{"city":{"slug":"colombo","name":"Colombo, Sri Lanka","lat":6.9271,"lon":79.8612,"tz_offset_hours":5.5,"country":"LK","tier":"diaspora"},"sunriseLocal":"05:57","sunsetLocal":"18:00","solarNoonLocal":"11:58","dayLengthHours":12.040166927558577,"dayLengthDisplay":"12 Hours 02 Mins 25 Secs","nightLengthDisplay":"11 Hours 57 Mins 35 Secs","moonriseLocal":"20:40","moonsetLocal":"09:04","rahuKala":{"name":"Rāhu Kāla","start":"13:29","end":"14:59","startHours":13.479323146149985,"endHours":14.984344012094809,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"05:57","end":"07:28","startHours":5.954218816425875,"endHours":7.459239682370697,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"08:58","end":"10:28","startHours":8.964260548315519,"endHours":10.469281414260342,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:46","end":"09:10","startHours":8.763591099522877,"endHours":9.164929997108162,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:27","end":"06:47","startHours":6.455892438407483,"endHours":6.776963556475712,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:34","end":"12:23","startHours":11.572963382619879,"endHours":12.375641177790449,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:21","end":"05:09","startHours":4.348863226084732,"endHours":5.151541021255303,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:57","end":"05:57","startHours":4.950871572462661,"endHours":5.954218816425875,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"13:59","end":"14:47","startHours":13.980996768131593,"endHours":14.783674563302165,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:48","end":"18:12","startHours":17.794385743984453,"endHours":18.19438574398445,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:00","end":"18:30","startHours":17.994385743984452,"endHours":18.496059365966058,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:45","end":"19:30","startHours":17.744385743984452,"endHours":19.494385743984452,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:34","end":"00:23","startHours":23.57296338261988,"endHours":24.375641177790452,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Śubha","start":"05:57","end":"07:28","startHours":5.954218816425875,"endHours":7.459239682370697,"quality":"auspicious"},{"name":"Roga","start":"07:28","end":"08:58","startHours":7.459239682370697,"endHours":8.964260548315519,"quality":"inauspicious"},{"name":"Udveg","start":"08:58","end":"10:28","startHours":8.964260548315519,"endHours":10.469281414260342,"quality":"inauspicious"},{"name":"Chala","start":"10:28","end":"11:58","startHours":10.469281414260342,"endHours":11.974302280205164,"quality":"neutral"},{"name":"Labha","start":"11:58","end":"13:29","startHours":11.974302280205164,"endHours":13.479323146149985,"quality":"auspicious"},{"name":"Amṛta","start":"13:29","end":"14:59","startHours":13.479323146149985,"endHours":14.984344012094809,"quality":"auspicious"},{"name":"Kāla","start":"14:59","end":"16:29","startHours":14.984344012094809,"endHours":16.48936487803963,"quality":"inauspicious"},{"name":"Śubha","start":"16:29","end":"18:00","startHours":16.48936487803963,"endHours":17.994385743984452,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Amṛta","start":"18:00","end":"19:29","startHours":17.994385743984452,"endHours":19.48936487803963,"quality":"auspicious"},{"name":"Kāla","start":"19:29","end":"20:59","startHours":19.48936487803963,"endHours":20.98434401209481,"quality":"inauspicious"},{"name":"Śubha","start":"20:59","end":"22:29","startHours":20.98434401209481,"endHours":22.479323146149987,"quality":"auspicious"},{"name":"Roga","start":"22:29","end":"23:58","startHours":22.479323146149987,"endHours":23.974302280205166,"quality":"inauspicious"},{"name":"Udveg","start":"23:58","end":"01:28","startHours":23.974302280205166,"endHours":25.469281414260344,"quality":"inauspicious"},{"name":"Chala","start":"01:28","end":"02:58","startHours":25.469281414260344,"endHours":26.96426054831552,"quality":"neutral"},{"name":"Labha","start":"02:58","end":"04:28","startHours":26.96426054831552,"endHours":28.459239682370697,"quality":"auspicious"},{"name":"Amṛta","start":"04:28","end":"05:57","startHours":28.459239682370697,"endHours":29.954218816425875,"quality":"auspicious"}],"horas":[{"name":"Hora 1","start":"05:57","end":"06:57","startHours":5.954218816425875,"endHours":6.954218816425875,"planetary_lord":"Jupiter"},{"name":"Hora 2","start":"06:57","end":"07:57","startHours":6.954218816425875,"endHours":7.954218816425875,"planetary_lord":"Saturn"},{"name":"Hora 3","start":"07:57","end":"08:57","startHours":7.954218816425875,"endHours":8.954218816425875,"planetary_lord":"Moon"},{"name":"Hora 4","start":"08:57","end":"09:57","startHours":8.954218816425875,"endHours":9.954218816425875,"planetary_lord":"Mercury"},{"name":"Hora 5","start":"09:57","end":"10:57","startHours":9.954218816425875,"endHours":10.954218816425875,"planetary_lord":"Venus"},{"name":"Hora 6","start":"10:57","end":"11:57","startHours":10.954218816425875,"endHours":11.954218816425875,"planetary_lord":"Sun"},{"name":"Hora 7","start":"11:57","end":"12:57","startHours":11.954218816425875,"endHours":12.954218816425875,"planetary_lord":"Mars"},{"name":"Hora 8","start":"12:57","end":"13:57","startHours":12.954218816425875,"endHours":13.954218816425875,"planetary_lord":"Jupiter"},{"name":"Hora 9","start":"13:57","end":"14:57","startHours":13.954218816425875,"endHours":14.954218816425875,"planetary_lord":"Saturn"},{"name":"Hora 10","start":"14:57","end":"15:57","startHours":14.954218816425875,"endHours":15.954218816425875,"planetary_lord":"Moon"},{"name":"Hora 11","start":"15:57","end":"16:57","startHours":15.954218816425875,"endHours":16.954218816425875,"planetary_lord":"Mercury"},{"name":"Hora 12","start":"16:57","end":"17:57","startHours":16.954218816425875,"endHours":17.954218816425875,"planetary_lord":"Venus"},{"name":"Hora 13","start":"17:57","end":"18:57","startHours":17.954218816425875,"endHours":18.954218816425875,"planetary_lord":"Sun"},{"name":"Hora 14","start":"18:57","end":"19:57","startHours":18.954218816425875,"endHours":19.954218816425875,"planetary_lord":"Mars"},{"name":"Hora 15","start":"19:57","end":"20:57","startHours":19.954218816425875,"endHours":20.954218816425875,"planetary_lord":"Jupiter"},{"name":"Hora 16","start":"20:57","end":"21:57","startHours":20.954218816425875,"endHours":21.954218816425875,"planetary_lord":"Saturn"},{"name":"Hora 17","start":"21:57","end":"22:57","startHours":21.954218816425875,"endHours":22.954218816425875,"planetary_lord":"Moon"},{"name":"Hora 18","start":"22:57","end":"23:57","startHours":22.954218816425875,"endHours":23.954218816425875,"planetary_lord":"Mercury"},{"name":"Hora 19","start":"23:57","end":"00:57","startHours":23.954218816425875,"endHours":24.954218816425875,"planetary_lord":"Venus"},{"name":"Hora 20","start":"00:57","end":"01:57","startHours":24.954218816425875,"endHours":25.954218816425875,"planetary_lord":"Sun"},{"name":"Hora 21","start":"01:57","end":"02:57","startHours":25.954218816425875,"endHours":26.954218816425875,"planetary_lord":"Mars"},{"name":"Hora 22","start":"02:57","end":"03:57","startHours":26.954218816425875,"endHours":27.954218816425875,"planetary_lord":"Jupiter"},{"name":"Hora 23","start":"03:57","end":"04:57","startHours":27.954218816425875,"endHours":28.954218816425875,"planetary_lord":"Saturn"},{"name":"Hora 24","start":"04:57","end":"05:57","startHours":28.954218816425875,"endHours":29.954218816425875,"planetary_lord":"Moon"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Karka","Tulā","Vṛścika","Kumbha","Mīna"],"unfavorable_rashis":["Meṣa","Mithuna","Siṃha","Kanyā","Dhanu","Makara"]},"dishaShool":"South (Dakṣiṇa)","chandraVasa":"South-East","rahuVasa":"North-West","anandadiYoga":{"name":"Siddhi","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-4.43883181341952,"eotMinutes":12.09706318769023,"ayanamsa":24.0312}},"calendars":{"vikram_samvat":2069,"vikram_samvatsara":"Viśvāvasu","saka_samvat":1934,"saka_samvatsara":"Nandana","bengali_samvat":1419,"malayalam_era":1188,"nanakshahi_year":543,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Kṛṣṇa Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Bhādrapada","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Kṛṣṇa Caturthī · Vikram 2069 Viśvāvasu · Śaka 1934 Nandana"},"festivals":[{"id":"sankashti-chaturthi","name":"Saṅkaṣṭī Caturthī","name_sanskrit":"सङ्कष्टी चतुर्थी","tradition":"Pan-Hindu","associated_deity":"Gaṇeśa","significance":"Monthly Gaṇeśa vrata.","vrata":true,"detection":{"tithi_number":19,"tithi_paksha":"Kṛṣṇa"},"precedence":6}],"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":[{"historical_date":"-3137-10-04","event":"Mahābhārata Day 1 (Bhagavad Gītā delivered)","chart_id":"krishna","shared_marker":"same Kṛttikā","url":"/day/-3137-10-04","relevance":0.5},{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Kṛttikā","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"colombo"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 4, 2012 CE · Colombo, Sri Lanka · Vidhyamitra","description":"October 4, 2012 CE for Colombo, Sri Lanka: Kṛṣṇa Caturthī, sūryodaya 05:57, sūryāsta 18:00.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/2012-10-04","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/2012-10-04","sa":"https://sa.vidhyamitra.com/city/colombo/2012-10-04","hi":"https://hi.vidhyamitra.com/city/colombo/2012-10-04","x-default":"https://vidhyamitra.com/city/colombo/2012-10-04"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T03:27:53.924Z","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":"2026-05-31T03:27:53.924Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T03:27:53.924Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}