{"id":"vidhyamitra:city-day:colombo:1963-01-01:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/colombo/1963-01-01","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"1963-01-01","date_display":"January 1, 1963 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":1963,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438030.770833,"kali_year":5064,"ahargana":1849565.2708,"sun":{"sidereal_longitude":256.4166,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":320.2121,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":63.7954,"elapsed_within_tithi_degrees":3.7954},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.2121,"elapsed_within_degrees":0.2121},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":216.6287},"karana":{"half_tithi_index":10,"name":"Kaulava"},"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":1963,"month":1,"day":1,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2438030.770833,"ahargana":1849565.2708,"kali_year":5064,"ayanamsa_lahiri":23.3361,"grahas":{"sun":{"sidereal_longitude":256.563453,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":20,"name":"Pūrva Āṣāḍhā","pada":1},"retrograde":false},"moon":{"sidereal_longitude":320.3556530000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1},"retrograde":false,"latitude":-2.8351},"mars":{"sidereal_longitude":121.74585300000001,"rashi":{"number":5,"name":"Siṃha"},"nakshatra":{"number":10,"name":"Maghā","pada":1},"retrograde":false},"mercury":{"sidereal_longitude":276.032553,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":3},"retrograde":false},"jupiter":{"sidereal_longitude":316.3963530000001,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":24,"name":"Śatabhiṣā","pada":3},"retrograde":false},"venus":{"sidereal_longitude":212.40385300000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"saturn":{"sidereal_longitude":287.25975300000005,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":3},"retrograde":false},"rahu":{"sidereal_longitude":101.1312,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":8,"name":"Puṣya","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":281.1312,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","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":1963,"month":1,"day":1,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2438030.770833,"kali_year":5064,"ahargana":1849565.2708,"sun":{"sidereal_longitude":256.4166,"rashi":9,"rashi_name":"Dhanu"},"moon":{"sidereal_longitude":320.2121,"rashi":11,"rashi_name":"Kumbha"},"tithi":{"number":6,"name":"Ṣaṣṭhī","paksha":"Śukla","full_name":"Śukla Ṣaṣṭhī","elongation_degrees":63.7954,"elapsed_within_tithi_degrees":3.7954},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":1,"moon_longitude":320.2121,"elapsed_within_degrees":0.2121},"yoga":{"number":17,"name":"Vyatīpāta","sum_longitude":216.6287},"karana":{"half_tithi_index":10,"name":"Kaulava"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.835,"elongation":63.795},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.835,"opposition_distance":116.205}},"eclipse_window_40days":[{"offset_days":9,"type":"lunar","occurs":true,"moon_latitude":-0.956,"opposition_distance":2.706}]},"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":"06:22","sunsetLocal":"18:06","solarNoonLocal":"12:14","dayLengthHours":11.726286043077835,"dayLengthDisplay":"11 Hours 43 Mins 35 Secs","nightLengthDisplay":"12 Hours 16 Mins 25 Secs","moonriseLocal":"10:30","moonsetLocal":"22:29","rahuKala":{"name":"Rāhu Kāla","start":"15:10","end":"16:38","startHours":15.169244482826059,"endHours":16.63503023821079,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:18","end":"10:46","startHours":9.306101461287142,"endHours":10.771887216671871,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:14","end":"13:42","startHours":12.2376729720566,"endHours":13.70345872744133,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"09:07","end":"09:30","startHours":9.110663360569177,"endHours":9.501539562005107,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:52","end":"07:11","startHours":6.863125202312593,"endHours":7.175826163461335,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:51","end":"12:38","startHours":11.846796770620672,"endHours":12.628549173492528,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:49","end":"05:36","startHours":4.811025144773971,"endHours":5.592777547645827,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:24","end":"06:22","startHours":5.397339446927863,"endHours":6.374529950517683,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:12","end":"14:58","startHours":14.19205397923624,"endHours":14.973806382108096,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:54","end":"18:18","startHours":17.90081599359552,"endHours":18.300815993595517,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:06","end":"18:35","startHours":18.100815993595518,"endHours":18.589411245390426,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:51","end":"19:36","startHours":17.850815993595518,"endHours":19.600815993595518,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:51","end":"00:38","startHours":23.846796770620674,"endHours":24.628549173492527,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:22","end":"07:50","startHours":6.374529950517683,"endHours":7.8403157059024124,"quality":"inauspicious"},{"name":"Udveg","start":"07:50","end":"09:18","startHours":7.8403157059024124,"endHours":9.306101461287142,"quality":"inauspicious"},{"name":"Chala","start":"09:18","end":"10:46","startHours":9.306101461287142,"endHours":10.771887216671871,"quality":"neutral"},{"name":"Labha","start":"10:46","end":"12:14","startHours":10.771887216671871,"endHours":12.2376729720566,"quality":"auspicious"},{"name":"Amṛta","start":"12:14","end":"13:42","startHours":12.2376729720566,"endHours":13.70345872744133,"quality":"auspicious"},{"name":"Kāla","start":"13:42","end":"15:10","startHours":13.70345872744133,"endHours":15.169244482826059,"quality":"inauspicious"},{"name":"Śubha","start":"15:10","end":"16:38","startHours":15.169244482826059,"endHours":16.63503023821079,"quality":"auspicious"},{"name":"Roga","start":"16:38","end":"18:06","startHours":16.63503023821079,"endHours":18.100815993595518,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"18:06","end":"19:38","startHours":18.100815993595518,"endHours":19.63503023821079,"quality":"inauspicious"},{"name":"Śubha","start":"19:38","end":"21:10","startHours":19.63503023821079,"endHours":21.16924448282606,"quality":"auspicious"},{"name":"Roga","start":"21:10","end":"22:42","startHours":21.16924448282606,"endHours":22.70345872744133,"quality":"inauspicious"},{"name":"Udveg","start":"22:42","end":"00:14","startHours":22.70345872744133,"endHours":24.2376729720566,"quality":"inauspicious"},{"name":"Chala","start":"00:14","end":"01:46","startHours":24.2376729720566,"endHours":25.77188721667187,"quality":"neutral"},{"name":"Labha","start":"01:46","end":"03:18","startHours":25.77188721667187,"endHours":27.30610146128714,"quality":"auspicious"},{"name":"Amṛta","start":"03:18","end":"04:50","startHours":27.30610146128714,"endHours":28.840315705902412,"quality":"auspicious"},{"name":"Kāla","start":"04:50","end":"06:22","startHours":28.840315705902412,"endHours":30.374529950517683,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:22","end":"07:22","startHours":6.374529950517683,"endHours":7.374529950517683,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:22","end":"08:22","startHours":7.374529950517683,"endHours":8.374529950517683,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:22","end":"09:22","startHours":8.374529950517683,"endHours":9.374529950517683,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:22","end":"10:22","startHours":9.374529950517683,"endHours":10.374529950517683,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:22","end":"11:22","startHours":10.374529950517683,"endHours":11.374529950517683,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:22","end":"12:22","startHours":11.374529950517683,"endHours":12.374529950517683,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:22","end":"13:22","startHours":12.374529950517683,"endHours":13.374529950517683,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:22","end":"14:22","startHours":13.374529950517683,"endHours":14.374529950517683,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:22","end":"15:22","startHours":14.374529950517683,"endHours":15.374529950517683,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:22","end":"16:22","startHours":15.374529950517683,"endHours":16.374529950517683,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:22","end":"17:22","startHours":16.374529950517683,"endHours":17.374529950517683,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:22","end":"18:22","startHours":17.374529950517683,"endHours":18.374529950517683,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:22","end":"19:22","startHours":18.374529950517683,"endHours":19.374529950517683,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:22","end":"20:22","startHours":19.374529950517683,"endHours":20.374529950517683,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:22","end":"21:22","startHours":20.374529950517683,"endHours":21.374529950517683,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:22","end":"22:22","startHours":21.374529950517683,"endHours":22.374529950517683,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:22","end":"23:22","startHours":22.374529950517683,"endHours":23.374529950517683,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:22","end":"00:22","startHours":23.374529950517683,"endHours":24.374529950517683,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:22","end":"01:22","startHours":24.374529950517683,"endHours":25.374529950517683,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:22","end":"02:22","startHours":25.374529950517683,"endHours":26.374529950517683,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:22","end":"03:22","startHours":26.374529950517683,"endHours":27.374529950517683,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:22","end":"04:22","startHours":27.374529950517683,"endHours":28.374529950517683,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:22","end":"05:22","startHours":28.374529950517683,"endHours":29.374529950517683,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:22","end":"06:22","startHours":29.374529950517683,"endHours":30.374529950517683,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Puṣya","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Anurādhā","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Hasta","Citrā","Svātī","Viśākhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā"],"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":"North (Uttara)","chandraVasa":"South","rahuVasa":"North","anandadiYoga":{"name":"Saumya","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":-23.067200392990163,"eotMinutes":-3.705178323396069,"ayanamsa":23.3361}},"calendars":{"vikram_samvat":2020,"vikram_samvatsara":"Nala","saka_samvat":1885,"saka_samvatsara":"Śobhana","bengali_samvat":1370,"malayalam_era":1139,"nanakshahi_year":494,"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 Ṣaṣṭhī · Vikram 2020 Nala · Śaka 1885 Śobhana"},"festivals":[],"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":"colombo"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga January 1, 1963 CE · Colombo, Sri Lanka · Vidhyamitra","description":"January 1, 1963 CE for Colombo, Sri Lanka: Śukla Ṣaṣṭhī, sūryodaya 06:22, sūryāsta 18:06.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/colombo/1963-01-01","hreflang_alternates":{"en":"https://vidhyamitra.com/city/colombo/1963-01-01","sa":"https://sa.vidhyamitra.com/city/colombo/1963-01-01","hi":"https://hi.vidhyamitra.com/city/colombo/1963-01-01","x-default":"https://vidhyamitra.com/city/colombo/1963-01-01"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-06-03T22:10:53.379Z","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":"2026-06-03T22:10:53.379Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-06-03T22:10:53.379Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}